[U-Boot] [PATCH 1/3] ppc4xx: Add SPL support

[U-Boot] [PATCH 1/3] ppc4xx: Add SPL support

[Stefan Roese]

This patch adds SPL booting support (NOR flash) for the
PPC4xx platforms.

This SPL booting (Falcon mode) will be used by the upcoming
lcd4_lwmon5 board port (lwmon5 variant).

Signed-off-by: Stefan Roese <sr@denx.de>
---
 arch/powerpc/cpu/ppc4xx/Makefile       |  4 ++
 arch/powerpc/cpu/ppc4xx/start.S        | 37 +++++++++++++++--
 arch/powerpc/cpu/ppc4xx/u-boot-spl.lds | 74 ++++++++++++++++++++++++++++++++++
 arch/powerpc/cpu/ppc4xx/u-boot.lds     |  2 +
 4 files changed, 113 insertions(+), 4 deletions(-)
 create mode 100644 arch/powerpc/cpu/ppc4xx/u-boot-spl.lds

diff --git a/arch/powerpc/cpu/ppc4xx/Makefile b/arch/powerpc/cpu/ppc4xx/Makefile
index 8da2f86..e301dc6 100644
--- a/arch/powerpc/cpu/ppc4xx/Makefile
+++ b/arch/powerpc/cpu/ppc4xx/Makefile
@@ -68,6 +68,10 @@ COBJS	+= miiphy.o
 COBJS	+= uic.o
 endif
 
+ifdef CONFIG_SPL_BUILD
+COBJS-y += spl_boot.o
+endif
+
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS) $(COBJS-y))
 START	:= $(addprefix $(obj),$(START))
diff --git a/arch/powerpc/cpu/ppc4xx/start.S b/arch/powerpc/cpu/ppc4xx/start.S
index 7aef43b..ae990cc 100644
--- a/arch/powerpc/cpu/ppc4xx/start.S
+++ b/arch/powerpc/cpu/ppc4xx/start.S
@@ -232,7 +232,7 @@
  *
  * Use r12 to access the GOT
  */
-#if !defined(CONFIG_NAND_SPL)
+#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
 	START_GOT
 	GOT_ENTRY(_GOT2_TABLE_)
 	GOT_ENTRY(_FIXUP_TABLE_)
@@ -248,7 +248,8 @@
 	END_GOT
 #endif /* CONFIG_NAND_SPL */
 
-#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) && \
+	!defined(CONFIG_SPL_BUILD)
 	/*
 	 * NAND U-Boot image is started from offset 0
 	 */
@@ -270,6 +271,18 @@
 	bl	_start_440
 #endif
 
+#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
+	/*
+	 * This is the entry of the real U-Boot from a board port
+	 * that supports SPL booting on the PPC4xx. We only need
+	 * to call board_init_f() here. Everything else has already
+	 * been done in the SPL u-boot version.
+	 */
+	GET_GOT			/* initialize GOT access		*/
+	bl	board_init_f	/* run 1st part of board init code (in Flash)*/
+	/* NOTREACHED - board_init_f() does not return */
+#endif
+
 /*
  * 440 Startup -- on reset only the top 4k of the effective
  * address space is mapped in by an entry in the instruction
@@ -539,7 +552,7 @@ tlbnx2:	addi	r4,r4,1		/* Next TLB */
  * r3 - 1st arg to board_init(): IMMP pointer
  * r4 - 2nd arg to board_init(): boot flag
  */
-#ifndef CONFIG_NAND_SPL
+#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
 	.text
 	.long	0x27051956		/* U-Boot Magic Number			*/
 	.globl	version_string
@@ -612,6 +625,18 @@ _end_of_vectors:
 	.globl	_start
 _start:
 
+#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
+	/*
+	 * This is the entry of the real U-Boot from a board port
+	 * that supports SPL booting on the PPC4xx. We only need
+	 * to call board_init_f() here. Everything else has already
+	 * been done in the SPL u-boot version.
+	 */
+	GET_GOT			/* initialize GOT access		*/
+	bl	board_init_f	/* run 1st part of board init code (in Flash)*/
+	/* NOTREACHED - board_init_f() does not return */
+#endif
+
 /*****************************************************************************/
 #if defined(CONFIG_440)
 
@@ -796,7 +821,9 @@ _start:
 #ifdef CONFIG_NAND_SPL
 	bl	nand_boot_common	/* will not return */
 #else
+#ifndef CONFIG_SPL_BUILD
 	GET_GOT
+#endif
 
 	bl	cpu_init_f	/* run low-level CPU init code	   (from Flash) */
 	bl	board_init_f
@@ -1080,7 +1107,7 @@ _start:
 	/*----------------------------------------------------------------------- */
 
 
-#ifndef CONFIG_NAND_SPL
+#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
 /*
  * This code finishes saving the registers to the exception frame
  * and jumps to the appropriate handler for the exception.
@@ -1262,6 +1289,7 @@ in32r:
 	lwbrx	r3,r0,r3
 	blr
 
+#if !defined(CONFIG_SPL_BUILD)
 /*
  * void relocate_code (addr_sp, gd, addr_moni)
  *
@@ -1626,6 +1654,7 @@ __440_msr_continue:
 
 	mtlr	r4			/* restore link register	*/
 	blr
+#endif /* CONFIG_SPL_BUILD */
 
 #if defined(CONFIG_440)
 /*----------------------------------------------------------------------------+
diff --git a/arch/powerpc/cpu/ppc4xx/u-boot-spl.lds b/arch/powerpc/cpu/ppc4xx/u-boot-spl.lds
new file mode 100644
index 0000000..4634263
--- /dev/null
+++ b/arch/powerpc/cpu/ppc4xx/u-boot-spl.lds
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2012-2013 Stefan Roese <sr@denx.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+MEMORY
+{
+	sdram : ORIGIN = CONFIG_SPL_BSS_START_ADDR,
+		LENGTH = CONFIG_SPL_BSS_MAX_SIZE
+	flash : ORIGIN = CONFIG_SPL_TEXT_BASE,
+		LENGTH = CONFIG_SYS_SPL_MAX_LEN
+}
+
+OUTPUT_ARCH(powerpc)
+ENTRY(_start)
+SECTIONS
+{
+#ifdef CONFIG_440
+	.bootpg 0xfffff000 :
+	{
+		arch/powerpc/cpu/ppc4xx/start.o	(.bootpg)
+
+		/*
+		 * PPC440 board need a board specific object with the
+		 * TLB definitions. This needs to get included right after
+		 * start.o, since the first shadow TLB only covers 4k
+		 * of address space.
+		 */
+		CONFIG_BOARDDIR/init.o	(.bootpg)
+	} > flash
+#endif
+
+	.resetvec 0xFFFFFFFC :
+	{
+		KEEP(*(.resetvec))
+	} > flash
+
+	.text :
+	{
+		__start = .;
+		arch/powerpc/cpu/ppc4xx/start.o	(.text)
+		CONFIG_BOARDDIR/init.o	(.text)
+		*(.text*)
+	} > flash
+
+	. = ALIGN(4);
+	.data : { *(SORT_BY_ALIGNMENT(.data*)) } > flash
+
+	. = ALIGN(4);
+	.rodata : { *(SORT_BY_ALIGNMENT(.rodata*)) } > flash
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start = .;
+		*(.bss*)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	} > sdram
+}
diff --git a/arch/powerpc/cpu/ppc4xx/u-boot.lds b/arch/powerpc/cpu/ppc4xx/u-boot.lds
index a96ddd5..540f7ca 100644
--- a/arch/powerpc/cpu/ppc4xx/u-boot.lds
+++ b/arch/powerpc/cpu/ppc4xx/u-boot.lds
@@ -96,6 +96,7 @@ SECTIONS
   . = ALIGN(256);
   __init_end = .;
 
+#ifndef CONFIG_SPL
 #ifdef CONFIG_440
   .bootpg RESET_VECTOR_ADDRESS - 0xffc :
   {
@@ -132,6 +133,7 @@ SECTIONS
 #if (RESET_VECTOR_ADDRESS == 0xfffffffc)
   . |= 0x10;
 #endif
+#endif /* CONFIG_SPL */
 
   __bss_start = .;
   .bss (NOLOAD)       :
-- 
1.8.1.4

[U-Boot] [PATCH 2/3] Makefile: Add target for combined u-boot.img & spl/u-boot.bin

[Stefan Roese]

This new make target "u-boot-img-spl-at-end.bin" consists of the
the real, full-blown U-Boot image and the U-Boot SPL binary
directly attached to it. The full-blown U-Boot image has the
mkimage header included, with its load-address and entry-point.

This will be used by the upcoming lwmon5 PPC440EPx derivate board
port.

Signed-off-by: Stefan Roese <sr@denx.de>
---
 Makefile  | 12 ++++++++++++
 config.mk |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/Makefile b/Makefile
index 3305e8c..42bd96a 100644
--- a/Makefile
+++ b/Makefile
@@ -548,6 +548,18 @@ endif
 $(obj)u-boot-img.bin: $(obj)spl/u-boot-spl.bin $(obj)u-boot.img
 		cat $(obj)spl/u-boot-spl.bin $(obj)u-boot.img > $@
 
+# PPC4xx needs the SPL at the end of the image, since the reset vector
+# is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
+# and need to introduce a new build target with the full blown U-Boot
+# at the start padded up to the start of the SPL image. And then concat
+# the SPL image to the end.
+$(obj)u-boot-img-spl-at-end.bin: $(obj)spl/u-boot-spl.bin $(obj)u-boot.img
+		tr "\000" "\377" < /dev/zero | dd ibs=1 count=$(CONFIG_UBOOT_PAD_TO) \
+			of=$(obj)u-boot-pad.img 2>/dev/null
+		dd if=$(obj)u-boot.img of=$(obj)u-boot-pad.img \
+			conv=notrunc 2>/dev/null
+		cat $(obj)u-boot-pad.img $(obj)spl/u-boot-spl.bin > $@
+
 ifeq ($(CONFIG_SANDBOX),y)
 GEN_UBOOT = \
 		cd $(LNDIR) && $(CC) $(SYMS) -T $(obj)u-boot.lds \
diff --git a/config.mk b/config.mk
index b7cd481..c73f510 100644
--- a/config.mk
+++ b/config.mk
@@ -217,6 +217,10 @@ ifneq ($(CONFIG_SPL_PAD_TO),)
 CPPFLAGS += -DCONFIG_SPL_PAD_TO=$(CONFIG_SPL_PAD_TO)
 endif
 
+ifneq ($(CONFIG_UBOOT_PAD_TO),)
+CPPFLAGS += -DCONFIG_UBOOT_PAD_TO=$(CONFIG_UBOOT_PAD_TO)
+endif
+
 ifeq ($(CONFIG_SPL_BUILD),y)
 CPPFLAGS += -DCONFIG_SPL_BUILD
 endif
-- 
1.8.1.4

[U-Boot] [PATCH 3/3] ppc4xx: Add lcd4_lwmon5 support

[Stefan Roese]

This patch adds the fast booting LWMON5 derivat "lcd4_lwmon5".
Its a stripped down version of the full blown lwmon5 support,
without ECC, USB, POST and some other stuff. It used the newly
introduced SPL infrastrucure for SPL from NOR flash booting
on the PPC4xx.

By setting the environment variable "boot_os" to "yes", Linux
will be started from the SPL version. If not, the "normal"
U-Boot will be started.

Signed-off-by: Stefan Roese <sr@denx.de>
---
 board/lwmon5/lwmon5.c    | 80 ++++++++++++++++++++++++++++++++++++++++++++++--
 board/lwmon5/sdram.c     |  4 ++-
 boards.cfg               |  1 +
 include/configs/lwmon5.h | 68 ++++++++++++++++++++++++++++++++++++++--
 4 files changed, 147 insertions(+), 6 deletions(-)

diff --git a/board/lwmon5/lwmon5.c b/board/lwmon5/lwmon5.c
index ecd9536..4487dee 100644
--- a/board/lwmon5/lwmon5.c
+++ b/board/lwmon5/lwmon5.c
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2007-2010
+ * (C) Copyright 2007-2013
  * Stefan Roese, DENX Software Engineering, sr at denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -200,9 +200,11 @@ int misc_init_r(void)
 	u32 pbcr;
 	int size_val = 0;
 	u32 reg;
+#ifndef CONFIG_LCD4_LWMON5
 	unsigned long usb2d0cr = 0;
 	unsigned long usb2phy0cr, usb2h0cr = 0;
 	unsigned long sdr0_pfc1, sdr0_srst;
+#endif
 
 	/*
 	 * FLASH stuff...
@@ -233,6 +235,7 @@ int misc_init_r(void)
 		      CONFIG_ENV_ADDR_REDUND + 2 * CONFIG_ENV_SECT_SIZE - 1,
 		      &flash_info[cfi_flash_num_flash_banks - 1]);
 
+#ifndef CONFIG_LCD4_LWMON5
 	/*
 	 * USB suff...
 	 */
@@ -306,6 +309,7 @@ int misc_init_r(void)
 	/* 7. Reassert internal PHY reset: */
 	mtsdr(SDR0_SRST1, SDR0_SRST1_USB20PHY);
 	udelay(1000);
+#endif
 
 	/*
 	 * Clear resets
@@ -313,7 +317,9 @@ int misc_init_r(void)
 	mtsdr(SDR0_SRST1, 0x00000000);
 	mtsdr(SDR0_SRST0, 0x00000000);
 
+#ifndef CONFIG_LCD4_LWMON5
 	printf("USB:   Host(int phy) Device(ext phy)\n");
+#endif
 
 	/*
 	 * Clear PLB4A0_ACR[WRP]
@@ -323,10 +329,12 @@ int misc_init_r(void)
 	reg = mfdcr(PLB4A0_ACR) & ~PLB4Ax_ACR_WRP_MASK;
 	mtdcr(PLB4A0_ACR, reg);
 
+#ifndef CONFIG_LCD4_LWMON5
 	/*
 	 * Init matrix keyboard
 	 */
 	misc_init_r_kbd();
+#endif
 
 	return 0;
 }
@@ -336,7 +344,7 @@ int checkboard(void)
 	char buf[64];
 	int i = getenv_f("serial#", buf, sizeof(buf));
 
-	puts("Board: lwmon5");
+	printf("Board: %s", __stringify(CONFIG_HOSTNAME));
 
 	if (i > 0) {
 		puts(", serial# ");
@@ -495,3 +503,71 @@ void board_reset(void)
 {
 	gpio_write_bit(CONFIG_SYS_GPIO_BOARD_RESET, 1);
 }
+
+#ifdef CONFIG_SPL_OS_BOOT
+/*
+ * lwmon5 specific implementation of spl_start_uboot()
+ *
+ * RETURN
+ * 0 if booting into OS is selected (default)
+ * 1 if booting into U-Boot is selected
+ */
+int spl_start_uboot(void)
+{
+	char s[8];
+
+	env_init();
+	getenv_f("boot_os", s, sizeof(s));
+	if ((s != NULL) && (strcmp(s, "yes") == 0))
+		return 0;
+
+	return 1;
+}
+
+/*
+ * This function is called from the SPL U-Boot version for
+ * early init stuff, that needs to be done for OS (e.g. Linux)
+ * booting. Doing it later in the real U-Boot would not work
+ * in case that the SPL U-Boot boots Linux directly.
+ */
+void spl_board_init(void)
+{
+	const gdc_regs *regs = board_get_regs();
+
+	/*
+	 * Reset PHY's:
+	 * The PHY's need a 2nd reset pulse, since the MDIO address is latched
+	 * upon reset, and with the first reset upon powerup, the addresses are
+	 * not latched reliable, since the IRQ line is multiplexed with an
+	 * MDIO address. A 2nd reset at this time will make sure, that the
+	 * correct address is latched.
+	 */
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY0_RST, 1);
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY1_RST, 1);
+	udelay(1000);
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY0_RST, 0);
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY1_RST, 0);
+	udelay(1000);
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY0_RST, 1);
+	gpio_write_bit(CONFIG_SYS_GPIO_PHY1_RST, 1);
+
+	/*
+	 * Reset Lime controller
+	 */
+	gpio_write_bit(CONFIG_SYS_GPIO_LIME_S, 1);
+	udelay(500);
+	gpio_write_bit(CONFIG_SYS_GPIO_LIME_RST, 1);
+
+	out_be32((void *)CONFIG_SYS_LIME_SDRAM_CLOCK, CONFIG_SYS_MB862xx_CCF);
+	udelay(300);
+	out_be32((void *)CONFIG_SYS_LIME_MMR, CONFIG_SYS_MB862xx_MMR);
+
+	while (regs->index) {
+		out_be32((void *)(CONFIG_SYS_LIME_BASE_0 + GC_DISP_BASE) +
+			 regs->index, regs->value);
+		regs++;
+	}
+
+	board_backlight_brightness(DEFAULT_BRIGHTNESS);
+}
+#endif
diff --git a/board/lwmon5/sdram.c b/board/lwmon5/sdram.c
index b64b35a..78b8fbc 100644
--- a/board/lwmon5/sdram.c
+++ b/board/lwmon5/sdram.c
@@ -6,7 +6,7 @@
  * Alain Saurel,	    AMCC/IBM, alain.saurel at fr.ibm.com
  * Robert Snyder,	    AMCC/IBM, rob.snyder at fr.ibm.com
  *
- * (C) Copyright 2007-2008
+ * (C) Copyright 2007-2013
  * Stefan Roese, DENX Software Engineering, sr at denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -160,6 +160,7 @@ static void program_ecc(u32 start_address,
  ************************************************************************/
 phys_size_t initdram (int board_type)
 {
+#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_LCD4_LWMON5)
 	/* CL=4 */
 	mtsdram(DDR0_02, 0x00000000);
 
@@ -253,6 +254,7 @@ phys_size_t initdram (int board_type)
 	 * exceptions are enabled.
 	 */
 	set_mcsr(get_mcsr());
+#endif /* CONFIG_SPL_BUILD */
 
 	return (CONFIG_SYS_MBYTES_SDRAM << 20);
 }
diff --git a/boards.cfg b/boards.cfg
index e4b0d44..2d1f12f 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -972,6 +972,7 @@ JSE                          powerpc     ppc4xx      jse
 korat                        powerpc     ppc4xx
 korat_perm                   powerpc     ppc4xx      korat               -              -           korat:KORAT_PERMANENT
 lwmon5                       powerpc     ppc4xx
+lcd4_lwmon5                  powerpc     ppc4xx      lwmon5              -              -           lwmon5:LCD4_LWMON5
 pcs440ep                     powerpc     ppc4xx
 quad100hd                    powerpc     ppc4xx
 sbc405                       powerpc     ppc4xx
diff --git a/include/configs/lwmon5.h b/include/configs/lwmon5.h
index 2ebcd16..ba613e3 100644
--- a/include/configs/lwmon5.h
+++ b/include/configs/lwmon5.h
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2007-2010
+ * (C) Copyright 2007-2013
  * Stefan Roese, DENX Software Engineering, sr at denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -37,8 +37,12 @@
 #define CONFIG_440		1		/* ... PPC440 family	*/
 #define CONFIG_4xx		1		/* ... PPC4xx family	*/
 
-#ifndef CONFIG_SYS_TEXT_BASE
+#ifdef CONFIG_LCD4_LWMON5
+#define	CONFIG_SYS_TEXT_BASE	0x01000000 /* SPL U-Boot TEXT_BASE */
+#define CONFIG_HOSTNAME		lcd4_lwmon5
+#else
 #define CONFIG_SYS_TEXT_BASE	0xFFF80000
+#define CONFIG_HOSTNAME		lwmon5
 #endif
 
 #define CONFIG_SYS_CLK_FREQ	33300000	/* external freq to pll	*/
@@ -56,7 +60,7 @@
  * actual resources get mapped (not physical addresses)
  */
 #define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE	/* Start of U-Boot	*/
-#define CONFIG_SYS_MONITOR_LEN		(0xFFFFFFFF - CONFIG_SYS_MONITOR_BASE + 1)
+#define CONFIG_SYS_MONITOR_LEN		0x80000
 #define CONFIG_SYS_MALLOC_LEN		(1 << 20)	/* Reserved for malloc	*/
 
 #define CONFIG_SYS_BOOT_BASE_ADDR	0xf0000000
@@ -75,9 +79,11 @@
 #define CONFIG_SYS_PCI_MEMBASE2		(CONFIG_SYS_PCI_MEMBASE1 + 0x10000000)
 #define CONFIG_SYS_PCI_MEMBASE3		(CONFIG_SYS_PCI_MEMBASE2 + 0x10000000)
 
+#ifndef CONFIG_LCD4_LWMON5
 #define CONFIG_SYS_USB2D0_BASE		0xe0000100
 #define CONFIG_SYS_USB_DEVICE		0xe0000000
 #define CONFIG_SYS_USB_HOST		0xe0000400
+#endif
 
 /*
  * Initial RAM & stack pointer
@@ -87,12 +93,20 @@
  * content during reset (GPT0_COMP6). This way we reserve the OCM (16k)
  * for logbuffer only. (GPT0_COMP1-COMP5 are reserved for logbuffer header.)
  */
+#ifndef CONFIG_LCD4_LWMON5
 #define CONFIG_SYS_INIT_RAM_DCACHE	1		/* d-cache as init ram	*/
 #define CONFIG_SYS_INIT_RAM_ADDR	0x70000000		/* DCache       */
 #define CONFIG_SYS_INIT_RAM_SIZE		(4 << 10)
 #define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - \
 					 GENERATED_GBL_DATA_SIZE)
 #define CONFIG_SYS_INIT_SP_OFFSET	CONFIG_SYS_GBL_DATA_OFFSET
+#else
+#define CONFIG_SYS_INIT_RAM_ADDR	CONFIG_SYS_OCM_BASE
+#define CONFIG_SYS_INIT_RAM_SIZE	(4 << 10)
+#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - \
+					 GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_OFFSET	(CONFIG_SYS_GBL_DATA_OFFSET - 0x4)
+#endif
 /* unused GPT0 COMP reg	*/
 #define CONFIG_SYS_POST_WORD_ADDR	(CONFIG_SYS_PERIPHERAL_BASE + GPT0_COMP6)
 #define CONFIG_SYS_OCM_SIZE		(16 << 10)
@@ -166,8 +180,11 @@
 #define CONFIG_SYS_MBYTES_SDRAM		256
 #define CONFIG_SYS_DDR_CACHED_ADDR	0x40000000	/* setup 2nd TLB cached here	*/
 #define CONFIG_DDR_DATA_EYE			/* use DDR2 optimization	*/
+#ifndef CONFIG_LCD4_LWMON5
 #define CONFIG_DDR_ECC				/* enable ECC			*/
+#endif
 
+#ifndef CONFIG_LCD4_LWMON5
 /* POST support */
 #define CONFIG_POST		(CONFIG_SYS_POST_CACHE		| \
 				 CONFIG_SYS_POST_CPU		| \
@@ -276,6 +293,7 @@
 #define CONFIG_ALT_LH_ADDR	(CONFIG_SYS_PERIPHERAL_BASE + GPT0_COMP1)
 #define CONFIG_ALT_LB_ADDR	(CONFIG_SYS_OCM_BASE)
 #define CONFIG_SYS_CONSOLE_IS_IN_ENV /* Otherwise it catches logbuffer as output */
+#endif
 
 /*
  * I2C
@@ -395,6 +413,7 @@
 #define CONFIG_VIDEO_SW_CURSOR
 #define CONFIG_SPLASH_SCREEN
 
+#ifndef CONFIG_LCD4_LWMON5
 /*
  * USB/EHCI
  */
@@ -410,6 +429,7 @@
 #define CONFIG_MAC_PARTITION
 #define CONFIG_DOS_PARTITION
 #define CONFIG_ISO_PARTITION
+#endif
 
 /*
  * BOOTP options
@@ -444,9 +464,11 @@
 #define CONFIG_CMD_BMP
 #endif
 
+#ifndef CONFIG_LCD4_LWMON5
 #ifdef CONFIG_440EPX
 #define CONFIG_CMD_USB
 #endif
+#endif
 
 /*
  * Miscellaneous configurable options
@@ -480,11 +502,15 @@
 #define CONFIG_MX_CYCLIC        1       /* enable mdc/mwc commands      */
 #define CONFIG_VERSION_VARIABLE 1	/* include version env variable */
 
+#define CONFIG_SYS_CONSOLE_INFO_QUIET	/* don't print console @ startup*/
+
+#ifndef CONFIG_LCD4_LWMON5
 #ifndef DEBUG
 #define CONFIG_HW_WATCHDOG	1	/* Use external HW-Watchdog	*/
 #endif
 #define CONFIG_WD_PERIOD	40000	/* in usec */
 #define CONFIG_WD_MAX_RATE	66600	/* in ticks */
+#endif
 
 /*
  * For booting Linux, the board info and command line data
@@ -644,4 +670,40 @@
 #define CONFIG_KGDB_BAUDRATE	230400	/* speed to run kgdb serial port */
 #define CONFIG_KGDB_SER_INDEX	2	    /* which serial port to use */
 #endif
+
+/*
+ * SPL related defines
+ */
+#ifdef CONFIG_LCD4_LWMON5
+#define CONFIG_SPL
+#define CONFIG_SPL_FRAMEWORK
+#define CONFIG_SPL_BOARD_INIT
+#define CONFIG_SPL_NOR_SUPPORT
+#define CONFIG_SPL_TEXT_BASE		0xffff0000 /* last 64 KiB for SPL */
+#define CONFIG_SYS_SPL_MAX_LEN		(64 << 10)
+#define CONFIG_UBOOT_PAD_TO		458752	/* decimal for 'dd' */
+#define	CONFIG_SPL_START_S_PATH	"arch/powerpc/cpu/ppc4xx"
+#define CONFIG_SPL_LDSCRIPT	"arch/powerpc/cpu/ppc4xx/u-boot-spl.lds"
+#define CONFIG_SPL_LIBCOMMON_SUPPORT	/* image.c */
+#define CONFIG_SPL_LIBGENERIC_SUPPORT	/* string.c */
+#define CONFIG_SPL_SERIAL_SUPPORT
+
+/* Place BSS for SPL near end of SDRAM */
+#define CONFIG_SPL_BSS_START_ADDR	((256 - 1) << 20)
+#define CONFIG_SPL_BSS_MAX_SIZE		(64 << 10)
+
+#define CONFIG_SPL_OS_BOOT
+/* Place patched DT blob (fdt)@this address */
+#define CONFIG_SYS_SPL_ARGS_ADDR	0x01800000
+
+#define CONFIG_SPL_TARGET		"u-boot-img-spl-at-end.bin"
+
+/* Settings for real U-Boot to be loaded from NOR flash */
+#define CONFIG_SYS_UBOOT_BASE		(-CONFIG_SYS_MONITOR_LEN)
+#define CONFIG_SYS_UBOOT_START		0x01002100
+
+#define CONFIG_SYS_OS_BASE		0xf8000000
+#define CONFIG_SYS_FDT_BASE		0xf87c0000
+#endif
+
 #endif	/* __CONFIG_H */
-- 
1.8.1.4

[U-Boot] [PATCH 3/3 v2] ppc4xx: Add lcd4_lwmon5 support

[Stefan Roese]

This patch adds the fast booting LWMON5 derivat "lcd4_lwmon5".
Its a stripped down version of the full blown lwmon5 support,
without ECC, USB, POST and some other stuff. It used the newly
introduced SPL infrastrucure for SPL from NOR flash booting
on the PPC4xx.

By setting the environment variable "boot_os" to "yes", Linux
will be started from the SPL version. If not, the "normal"
U-Boot will be started.

Signed-off-by: Stefan Roese <sr@denx.de>
---
v2:
- Call board_init_f() from spl_board_init(). This initializes
  the PFC registers needed for example for working ethernet in Linux.

 board/lwmon5/lwmon5.c    | 69 ++++++++++++++++++++++++++++++++++++++++++++++--
 board/lwmon5/sdram.c     |  4 ++-
 boards.cfg               |  1 +
 include/configs/lwmon5.h | 68 ++++++++++++++++++++++++++++++++++++++++++++---
 4 files changed, 136 insertions(+), 6 deletions(-)

diff --git a/board/lwmon5/lwmon5.c b/board/lwmon5/lwmon5.c
index ecd9536..db49c19 100644
--- a/board/lwmon5/lwmon5.c
+++ b/board/lwmon5/lwmon5.c
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2007-2010
+ * (C) Copyright 2007-2013
  * Stefan Roese, DENX Software Engineering, sr at denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -200,9 +200,11 @@ int misc_init_r(void)
 	u32 pbcr;
 	int size_val = 0;
 	u32 reg;
+#ifndef CONFIG_LCD4_LWMON5
 	unsigned long usb2d0cr = 0;
 	unsigned long usb2phy0cr, usb2h0cr = 0;
 	unsigned long sdr0_pfc1, sdr0_srst;
+#endif
 
 	/*
 	 * FLASH stuff...
@@ -233,6 +235,7 @@ int misc_init_r(void)
 		      CONFIG_ENV_ADDR_REDUND + 2 * CONFIG_ENV_SECT_SIZE - 1,
 		      &flash_info[cfi_flash_num_flash_banks - 1]);
 
+#ifndef CONFIG_LCD4_LWMON5
 	/*
 	 * USB suff...
 	 */
@@ -306,6 +309,7 @@ int misc_init_r(void)
 	/* 7. Reassert internal PHY reset: */
 	mtsdr(SDR0_SRST1, SDR0_SRST1_USB20PHY);
 	udelay(1000);
+#endif
 
 	/*
 	 * Clear resets
@@ -313,7 +317,9 @@ int misc_init_r(void)
 	mtsdr(SDR0_SRST1, 0x00000000);
 	mtsdr(SDR0_SRST0, 0x00000000);
 
+#ifndef CONFIG_LCD4_LWMON5
 	printf("USB:   Host(int phy) Device(ext phy)\n");
+#endif
 
 	/*
 	 * Clear PLB4A0_ACR[WRP]
@@ -323,10 +329,12 @@ int misc_init_r(void)
 	reg = mfdcr(PLB4A0_ACR) & ~PLB4Ax_ACR_WRP_MASK;
 	mtdcr(PLB4A0_ACR, reg);
 
+#ifndef CONFIG_LCD4_LWMON5
 	/*
 	 * Init matrix keyboard
 	 */
 	misc_init_r_kbd();
+#endif
 
 	return 0;
 }
@@ -336,7 +344,7 @@ int checkboard(void)
 	char buf[64];
 	int i = getenv_f("serial#", buf, sizeof(buf));
 
-	puts("Board: lwmon5");
+	printf("Board: %s", __stringify(CONFIG_HOSTNAME));
 
 	if (i > 0) {
 		puts(", serial# ");
@@ -495,3 +503,60 @@ void board_reset(void)
 {
 	gpio_write_bit(CONFIG_SYS_GPIO_BOARD_RESET, 1);
 }
+
+#ifdef CONFIG_SPL_OS_BOOT
+/*
+ * lwmon5 specific implementation of spl_start_uboot()
+ *
+ * RETURN
+ * 0 if booting into OS is selected (default)
+ * 1 if booting into U-Boot is selected
+ */
+int spl_start_uboot(void)
+{
+	char s[8];
+
+	env_init();
+	getenv_f("boot_os", s, sizeof(s));
+	if ((s != NULL) && (strcmp(s, "yes") == 0))
+		return 0;
+
+	return 1;
+}
+
+/*
+ * This function is called from the SPL U-Boot version for
+ * early init stuff, that needs to be done for OS (e.g. Linux)
+ * booting. Doing it later in the real U-Boot would not work
+ * in case that the SPL U-Boot boots Linux directly.
+ */
+void spl_board_init(void)
+{
+	const gdc_regs *regs = board_get_regs();
+
+	/*
+	 * Setup PFC registers, mainly for ethernet support
+	 * later on in Linux
+	 */
+	board_early_init_f();
+
+	/*
+	 * Reset Lime controller
+	 */
+	gpio_write_bit(CONFIG_SYS_GPIO_LIME_S, 1);
+	udelay(500);
+	gpio_write_bit(CONFIG_SYS_GPIO_LIME_RST, 1);
+
+	out_be32((void *)CONFIG_SYS_LIME_SDRAM_CLOCK, CONFIG_SYS_MB862xx_CCF);
+	udelay(300);
+	out_be32((void *)CONFIG_SYS_LIME_MMR, CONFIG_SYS_MB862xx_MMR);
+
+	while (regs->index) {
+		out_be32((void *)(CONFIG_SYS_LIME_BASE_0 + GC_DISP_BASE) +
+			 regs->index, regs->value);
+		regs++;
+	}
+
+	board_backlight_brightness(DEFAULT_BRIGHTNESS);
+}
+#endif
diff --git a/board/lwmon5/sdram.c b/board/lwmon5/sdram.c
index b64b35a..78b8fbc 100644
--- a/board/lwmon5/sdram.c
+++ b/board/lwmon5/sdram.c
@@ -6,7 +6,7 @@
  * Alain Saurel,	    AMCC/IBM, alain.saurel at fr.ibm.com
  * Robert Snyder,	    AMCC/IBM, rob.snyder at fr.ibm.com
  *
- * (C) Copyright 2007-2008
+ * (C) Copyright 2007-2013
  * Stefan Roese, DENX Software Engineering, sr at denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -160,6 +160,7 @@ static void program_ecc(u32 start_address,
  ************************************************************************/
 phys_size_t initdram (int board_type)
 {
+#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_LCD4_LWMON5)
 	/* CL=4 */
 	mtsdram(DDR0_02, 0x00000000);
 
@@ -253,6 +254,7 @@ phys_size_t initdram (int board_type)
 	 * exceptions are enabled.
 	 */
 	set_mcsr(get_mcsr());
+#endif /* CONFIG_SPL_BUILD */
 
 	return (CONFIG_SYS_MBYTES_SDRAM << 20);
 }
diff --git a/boards.cfg b/boards.cfg
index e4b0d44..2d1f12f 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -972,6 +972,7 @@ JSE                          powerpc     ppc4xx      jse
 korat                        powerpc     ppc4xx
 korat_perm                   powerpc     ppc4xx      korat               -              -           korat:KORAT_PERMANENT
 lwmon5                       powerpc     ppc4xx
+lcd4_lwmon5                  powerpc     ppc4xx      lwmon5              -              -           lwmon5:LCD4_LWMON5
 pcs440ep                     powerpc     ppc4xx
 quad100hd                    powerpc     ppc4xx
 sbc405                       powerpc     ppc4xx
diff --git a/include/configs/lwmon5.h b/include/configs/lwmon5.h
index 2ebcd16..ba613e3 100644
--- a/include/configs/lwmon5.h
+++ b/include/configs/lwmon5.h
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2007-2010
+ * (C) Copyright 2007-2013
  * Stefan Roese, DENX Software Engineering, sr at denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -37,8 +37,12 @@
 #define CONFIG_440		1		/* ... PPC440 family	*/
 #define CONFIG_4xx		1		/* ... PPC4xx family	*/
 
-#ifndef CONFIG_SYS_TEXT_BASE
+#ifdef CONFIG_LCD4_LWMON5
+#define	CONFIG_SYS_TEXT_BASE	0x01000000 /* SPL U-Boot TEXT_BASE */
+#define CONFIG_HOSTNAME		lcd4_lwmon5
+#else
 #define CONFIG_SYS_TEXT_BASE	0xFFF80000
+#define CONFIG_HOSTNAME		lwmon5
 #endif
 
 #define CONFIG_SYS_CLK_FREQ	33300000	/* external freq to pll	*/
@@ -56,7 +60,7 @@
  * actual resources get mapped (not physical addresses)
  */
 #define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE	/* Start of U-Boot	*/
-#define CONFIG_SYS_MONITOR_LEN		(0xFFFFFFFF - CONFIG_SYS_MONITOR_BASE + 1)
+#define CONFIG_SYS_MONITOR_LEN		0x80000
 #define CONFIG_SYS_MALLOC_LEN		(1 << 20)	/* Reserved for malloc	*/
 
 #define CONFIG_SYS_BOOT_BASE_ADDR	0xf0000000
@@ -75,9 +79,11 @@
 #define CONFIG_SYS_PCI_MEMBASE2		(CONFIG_SYS_PCI_MEMBASE1 + 0x10000000)
 #define CONFIG_SYS_PCI_MEMBASE3		(CONFIG_SYS_PCI_MEMBASE2 + 0x10000000)
 
+#ifndef CONFIG_LCD4_LWMON5
 #define CONFIG_SYS_USB2D0_BASE		0xe0000100
 #define CONFIG_SYS_USB_DEVICE		0xe0000000
 #define CONFIG_SYS_USB_HOST		0xe0000400
+#endif
 
 /*
  * Initial RAM & stack pointer
@@ -87,12 +93,20 @@
  * content during reset (GPT0_COMP6). This way we reserve the OCM (16k)
  * for logbuffer only. (GPT0_COMP1-COMP5 are reserved for logbuffer header.)
  */
+#ifndef CONFIG_LCD4_LWMON5
 #define CONFIG_SYS_INIT_RAM_DCACHE	1		/* d-cache as init ram	*/
 #define CONFIG_SYS_INIT_RAM_ADDR	0x70000000		/* DCache       */
 #define CONFIG_SYS_INIT_RAM_SIZE		(4 << 10)
 #define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - \
 					 GENERATED_GBL_DATA_SIZE)
 #define CONFIG_SYS_INIT_SP_OFFSET	CONFIG_SYS_GBL_DATA_OFFSET
+#else
+#define CONFIG_SYS_INIT_RAM_ADDR	CONFIG_SYS_OCM_BASE
+#define CONFIG_SYS_INIT_RAM_SIZE	(4 << 10)
+#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - \
+					 GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_OFFSET	(CONFIG_SYS_GBL_DATA_OFFSET - 0x4)
+#endif
 /* unused GPT0 COMP reg	*/
 #define CONFIG_SYS_POST_WORD_ADDR	(CONFIG_SYS_PERIPHERAL_BASE + GPT0_COMP6)
 #define CONFIG_SYS_OCM_SIZE		(16 << 10)
@@ -166,8 +180,11 @@
 #define CONFIG_SYS_MBYTES_SDRAM		256
 #define CONFIG_SYS_DDR_CACHED_ADDR	0x40000000	/* setup 2nd TLB cached here	*/
 #define CONFIG_DDR_DATA_EYE			/* use DDR2 optimization	*/
+#ifndef CONFIG_LCD4_LWMON5
 #define CONFIG_DDR_ECC				/* enable ECC			*/
+#endif
 
+#ifndef CONFIG_LCD4_LWMON5
 /* POST support */
 #define CONFIG_POST		(CONFIG_SYS_POST_CACHE		| \
 				 CONFIG_SYS_POST_CPU		| \
@@ -276,6 +293,7 @@
 #define CONFIG_ALT_LH_ADDR	(CONFIG_SYS_PERIPHERAL_BASE + GPT0_COMP1)
 #define CONFIG_ALT_LB_ADDR	(CONFIG_SYS_OCM_BASE)
 #define CONFIG_SYS_CONSOLE_IS_IN_ENV /* Otherwise it catches logbuffer as output */
+#endif
 
 /*
  * I2C
@@ -395,6 +413,7 @@
 #define CONFIG_VIDEO_SW_CURSOR
 #define CONFIG_SPLASH_SCREEN
 
+#ifndef CONFIG_LCD4_LWMON5
 /*
  * USB/EHCI
  */
@@ -410,6 +429,7 @@
 #define CONFIG_MAC_PARTITION
 #define CONFIG_DOS_PARTITION
 #define CONFIG_ISO_PARTITION
+#endif
 
 /*
  * BOOTP options
@@ -444,9 +464,11 @@
 #define CONFIG_CMD_BMP
 #endif
 
+#ifndef CONFIG_LCD4_LWMON5
 #ifdef CONFIG_440EPX
 #define CONFIG_CMD_USB
 #endif
+#endif
 
 /*
  * Miscellaneous configurable options
@@ -480,11 +502,15 @@
 #define CONFIG_MX_CYCLIC        1       /* enable mdc/mwc commands      */
 #define CONFIG_VERSION_VARIABLE 1	/* include version env variable */
 
+#define CONFIG_SYS_CONSOLE_INFO_QUIET	/* don't print console @ startup*/
+
+#ifndef CONFIG_LCD4_LWMON5
 #ifndef DEBUG
 #define CONFIG_HW_WATCHDOG	1	/* Use external HW-Watchdog	*/
 #endif
 #define CONFIG_WD_PERIOD	40000	/* in usec */
 #define CONFIG_WD_MAX_RATE	66600	/* in ticks */
+#endif
 
 /*
  * For booting Linux, the board info and command line data
@@ -644,4 +670,40 @@
 #define CONFIG_KGDB_BAUDRATE	230400	/* speed to run kgdb serial port */
 #define CONFIG_KGDB_SER_INDEX	2	    /* which serial port to use */
 #endif
+
+/*
+ * SPL related defines
+ */
+#ifdef CONFIG_LCD4_LWMON5
+#define CONFIG_SPL
+#define CONFIG_SPL_FRAMEWORK
+#define CONFIG_SPL_BOARD_INIT
+#define CONFIG_SPL_NOR_SUPPORT
+#define CONFIG_SPL_TEXT_BASE		0xffff0000 /* last 64 KiB for SPL */
+#define CONFIG_SYS_SPL_MAX_LEN		(64 << 10)
+#define CONFIG_UBOOT_PAD_TO		458752	/* decimal for 'dd' */
+#define	CONFIG_SPL_START_S_PATH	"arch/powerpc/cpu/ppc4xx"
+#define CONFIG_SPL_LDSCRIPT	"arch/powerpc/cpu/ppc4xx/u-boot-spl.lds"
+#define CONFIG_SPL_LIBCOMMON_SUPPORT	/* image.c */
+#define CONFIG_SPL_LIBGENERIC_SUPPORT	/* string.c */
+#define CONFIG_SPL_SERIAL_SUPPORT
+
+/* Place BSS for SPL near end of SDRAM */
+#define CONFIG_SPL_BSS_START_ADDR	((256 - 1) << 20)
+#define CONFIG_SPL_BSS_MAX_SIZE		(64 << 10)
+
+#define CONFIG_SPL_OS_BOOT
+/* Place patched DT blob (fdt)@this address */
+#define CONFIG_SYS_SPL_ARGS_ADDR	0x01800000
+
+#define CONFIG_SPL_TARGET		"u-boot-img-spl-at-end.bin"
+
+/* Settings for real U-Boot to be loaded from NOR flash */
+#define CONFIG_SYS_UBOOT_BASE		(-CONFIG_SYS_MONITOR_LEN)
+#define CONFIG_SYS_UBOOT_START		0x01002100
+
+#define CONFIG_SYS_OS_BASE		0xf8000000
+#define CONFIG_SYS_FDT_BASE		0xf87c0000
+#endif
+
 #endif	/* __CONFIG_H */
-- 
1.8.1.5

[U-Boot] [PATCH 3/3 v3] ppc4xx: Add lcd4_lwmon5 support

[Stefan Roese]

This patch adds the fast booting LWMON5 derivat "lcd4_lwmon5".
Its a stripped down version of the full blown lwmon5 support,
without ECC, USB, POST and some other stuff. It used the newly
introduced SPL infrastrucure for SPL from NOR flash booting
on the PPC4xx.

By setting the environment variable "boot_os" to "yes", Linux
will be started from the SPL version. If not, the "normal"
U-Boot will be started.

Signed-off-by: Stefan Roese <sr@denx.de>
---
v3:
- Clear all soft-reset bits in the SRSTn registers in SPL. Otherwise
  Linux will generate an floating point exception as the FPU is
  still disabled.

v2:
- Call board_init_f() from spl_board_init(). This initializes
  the PFC registers needed for example for working ethernet in Linux.

 board/lwmon5/lwmon5.c    | 75 ++++++++++++++++++++++++++++++++++++++++++++++--
 board/lwmon5/sdram.c     |  4 ++-
 boards.cfg               |  1 +
 include/configs/lwmon5.h | 68 +++++++++++++++++++++++++++++++++++++++++--
 4 files changed, 142 insertions(+), 6 deletions(-)

diff --git a/board/lwmon5/lwmon5.c b/board/lwmon5/lwmon5.c
index ecd9536..f7f64e7 100644
--- a/board/lwmon5/lwmon5.c
+++ b/board/lwmon5/lwmon5.c
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2007-2010
+ * (C) Copyright 2007-2013
  * Stefan Roese, DENX Software Engineering, sr at denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -200,9 +200,11 @@ int misc_init_r(void)
 	u32 pbcr;
 	int size_val = 0;
 	u32 reg;
+#ifndef CONFIG_LCD4_LWMON5
 	unsigned long usb2d0cr = 0;
 	unsigned long usb2phy0cr, usb2h0cr = 0;
 	unsigned long sdr0_pfc1, sdr0_srst;
+#endif
 
 	/*
 	 * FLASH stuff...
@@ -233,6 +235,7 @@ int misc_init_r(void)
 		      CONFIG_ENV_ADDR_REDUND + 2 * CONFIG_ENV_SECT_SIZE - 1,
 		      &flash_info[cfi_flash_num_flash_banks - 1]);
 
+#ifndef CONFIG_LCD4_LWMON5
 	/*
 	 * USB suff...
 	 */
@@ -306,6 +309,7 @@ int misc_init_r(void)
 	/* 7. Reassert internal PHY reset: */
 	mtsdr(SDR0_SRST1, SDR0_SRST1_USB20PHY);
 	udelay(1000);
+#endif
 
 	/*
 	 * Clear resets
@@ -313,7 +317,9 @@ int misc_init_r(void)
 	mtsdr(SDR0_SRST1, 0x00000000);
 	mtsdr(SDR0_SRST0, 0x00000000);
 
+#ifndef CONFIG_LCD4_LWMON5
 	printf("USB:   Host(int phy) Device(ext phy)\n");
+#endif
 
 	/*
 	 * Clear PLB4A0_ACR[WRP]
@@ -323,10 +329,12 @@ int misc_init_r(void)
 	reg = mfdcr(PLB4A0_ACR) & ~PLB4Ax_ACR_WRP_MASK;
 	mtdcr(PLB4A0_ACR, reg);
 
+#ifndef CONFIG_LCD4_LWMON5
 	/*
 	 * Init matrix keyboard
 	 */
 	misc_init_r_kbd();
+#endif
 
 	return 0;
 }
@@ -336,7 +344,7 @@ int checkboard(void)
 	char buf[64];
 	int i = getenv_f("serial#", buf, sizeof(buf));
 
-	puts("Board: lwmon5");
+	printf("Board: %s", __stringify(CONFIG_HOSTNAME));
 
 	if (i > 0) {
 		puts(", serial# ");
@@ -495,3 +503,66 @@ void board_reset(void)
 {
 	gpio_write_bit(CONFIG_SYS_GPIO_BOARD_RESET, 1);
 }
+
+#ifdef CONFIG_SPL_OS_BOOT
+/*
+ * lwmon5 specific implementation of spl_start_uboot()
+ *
+ * RETURN
+ * 0 if booting into OS is selected (default)
+ * 1 if booting into U-Boot is selected
+ */
+int spl_start_uboot(void)
+{
+	char s[8];
+
+	env_init();
+	getenv_f("boot_os", s, sizeof(s));
+	if ((s != NULL) && (strcmp(s, "yes") == 0))
+		return 0;
+
+	return 1;
+}
+
+/*
+ * This function is called from the SPL U-Boot version for
+ * early init stuff, that needs to be done for OS (e.g. Linux)
+ * booting. Doing it later in the real U-Boot would not work
+ * in case that the SPL U-Boot boots Linux directly.
+ */
+void spl_board_init(void)
+{
+	const gdc_regs *regs = board_get_regs();
+
+	/*
+	 * Setup PFC registers, mainly for ethernet support
+	 * later on in Linux
+	 */
+	board_early_init_f();
+
+	/*
+	 * Clear resets
+	 */
+	mtsdr(SDR0_SRST1, 0x00000000);
+	mtsdr(SDR0_SRST0, 0x00000000);
+
+	/*
+	 * Reset Lime controller
+	 */
+	gpio_write_bit(CONFIG_SYS_GPIO_LIME_S, 1);
+	udelay(500);
+	gpio_write_bit(CONFIG_SYS_GPIO_LIME_RST, 1);
+
+	out_be32((void *)CONFIG_SYS_LIME_SDRAM_CLOCK, CONFIG_SYS_MB862xx_CCF);
+	udelay(300);
+	out_be32((void *)CONFIG_SYS_LIME_MMR, CONFIG_SYS_MB862xx_MMR);
+
+	while (regs->index) {
+		out_be32((void *)(CONFIG_SYS_LIME_BASE_0 + GC_DISP_BASE) +
+			 regs->index, regs->value);
+		regs++;
+	}
+
+	board_backlight_brightness(DEFAULT_BRIGHTNESS);
+}
+#endif
diff --git a/board/lwmon5/sdram.c b/board/lwmon5/sdram.c
index b64b35a..78b8fbc 100644
--- a/board/lwmon5/sdram.c
+++ b/board/lwmon5/sdram.c
@@ -6,7 +6,7 @@
  * Alain Saurel,	    AMCC/IBM, alain.saurel at fr.ibm.com
  * Robert Snyder,	    AMCC/IBM, rob.snyder at fr.ibm.com
  *
- * (C) Copyright 2007-2008
+ * (C) Copyright 2007-2013
  * Stefan Roese, DENX Software Engineering, sr at denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -160,6 +160,7 @@ static void program_ecc(u32 start_address,
  ************************************************************************/
 phys_size_t initdram (int board_type)
 {
+#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_LCD4_LWMON5)
 	/* CL=4 */
 	mtsdram(DDR0_02, 0x00000000);
 
@@ -253,6 +254,7 @@ phys_size_t initdram (int board_type)
 	 * exceptions are enabled.
 	 */
 	set_mcsr(get_mcsr());
+#endif /* CONFIG_SPL_BUILD */
 
 	return (CONFIG_SYS_MBYTES_SDRAM << 20);
 }
diff --git a/boards.cfg b/boards.cfg
index e4b0d44..2d1f12f 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -972,6 +972,7 @@ JSE                          powerpc     ppc4xx      jse
 korat                        powerpc     ppc4xx
 korat_perm                   powerpc     ppc4xx      korat               -              -           korat:KORAT_PERMANENT
 lwmon5                       powerpc     ppc4xx
+lcd4_lwmon5                  powerpc     ppc4xx      lwmon5              -              -           lwmon5:LCD4_LWMON5
 pcs440ep                     powerpc     ppc4xx
 quad100hd                    powerpc     ppc4xx
 sbc405                       powerpc     ppc4xx
diff --git a/include/configs/lwmon5.h b/include/configs/lwmon5.h
index 2ebcd16..ba613e3 100644
--- a/include/configs/lwmon5.h
+++ b/include/configs/lwmon5.h
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2007-2010
+ * (C) Copyright 2007-2013
  * Stefan Roese, DENX Software Engineering, sr at denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -37,8 +37,12 @@
 #define CONFIG_440		1		/* ... PPC440 family	*/
 #define CONFIG_4xx		1		/* ... PPC4xx family	*/
 
-#ifndef CONFIG_SYS_TEXT_BASE
+#ifdef CONFIG_LCD4_LWMON5
+#define	CONFIG_SYS_TEXT_BASE	0x01000000 /* SPL U-Boot TEXT_BASE */
+#define CONFIG_HOSTNAME		lcd4_lwmon5
+#else
 #define CONFIG_SYS_TEXT_BASE	0xFFF80000
+#define CONFIG_HOSTNAME		lwmon5
 #endif
 
 #define CONFIG_SYS_CLK_FREQ	33300000	/* external freq to pll	*/
@@ -56,7 +60,7 @@
  * actual resources get mapped (not physical addresses)
  */
 #define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE	/* Start of U-Boot	*/
-#define CONFIG_SYS_MONITOR_LEN		(0xFFFFFFFF - CONFIG_SYS_MONITOR_BASE + 1)
+#define CONFIG_SYS_MONITOR_LEN		0x80000
 #define CONFIG_SYS_MALLOC_LEN		(1 << 20)	/* Reserved for malloc	*/
 
 #define CONFIG_SYS_BOOT_BASE_ADDR	0xf0000000
@@ -75,9 +79,11 @@
 #define CONFIG_SYS_PCI_MEMBASE2		(CONFIG_SYS_PCI_MEMBASE1 + 0x10000000)
 #define CONFIG_SYS_PCI_MEMBASE3		(CONFIG_SYS_PCI_MEMBASE2 + 0x10000000)
 
+#ifndef CONFIG_LCD4_LWMON5
 #define CONFIG_SYS_USB2D0_BASE		0xe0000100
 #define CONFIG_SYS_USB_DEVICE		0xe0000000
 #define CONFIG_SYS_USB_HOST		0xe0000400
+#endif
 
 /*
  * Initial RAM & stack pointer
@@ -87,12 +93,20 @@
  * content during reset (GPT0_COMP6). This way we reserve the OCM (16k)
  * for logbuffer only. (GPT0_COMP1-COMP5 are reserved for logbuffer header.)
  */
+#ifndef CONFIG_LCD4_LWMON5
 #define CONFIG_SYS_INIT_RAM_DCACHE	1		/* d-cache as init ram	*/
 #define CONFIG_SYS_INIT_RAM_ADDR	0x70000000		/* DCache       */
 #define CONFIG_SYS_INIT_RAM_SIZE		(4 << 10)
 #define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - \
 					 GENERATED_GBL_DATA_SIZE)
 #define CONFIG_SYS_INIT_SP_OFFSET	CONFIG_SYS_GBL_DATA_OFFSET
+#else
+#define CONFIG_SYS_INIT_RAM_ADDR	CONFIG_SYS_OCM_BASE
+#define CONFIG_SYS_INIT_RAM_SIZE	(4 << 10)
+#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - \
+					 GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_OFFSET	(CONFIG_SYS_GBL_DATA_OFFSET - 0x4)
+#endif
 /* unused GPT0 COMP reg	*/
 #define CONFIG_SYS_POST_WORD_ADDR	(CONFIG_SYS_PERIPHERAL_BASE + GPT0_COMP6)
 #define CONFIG_SYS_OCM_SIZE		(16 << 10)
@@ -166,8 +180,11 @@
 #define CONFIG_SYS_MBYTES_SDRAM		256
 #define CONFIG_SYS_DDR_CACHED_ADDR	0x40000000	/* setup 2nd TLB cached here	*/
 #define CONFIG_DDR_DATA_EYE			/* use DDR2 optimization	*/
+#ifndef CONFIG_LCD4_LWMON5
 #define CONFIG_DDR_ECC				/* enable ECC			*/
+#endif
 
+#ifndef CONFIG_LCD4_LWMON5
 /* POST support */
 #define CONFIG_POST		(CONFIG_SYS_POST_CACHE		| \
 				 CONFIG_SYS_POST_CPU		| \
@@ -276,6 +293,7 @@
 #define CONFIG_ALT_LH_ADDR	(CONFIG_SYS_PERIPHERAL_BASE + GPT0_COMP1)
 #define CONFIG_ALT_LB_ADDR	(CONFIG_SYS_OCM_BASE)
 #define CONFIG_SYS_CONSOLE_IS_IN_ENV /* Otherwise it catches logbuffer as output */
+#endif
 
 /*
  * I2C
@@ -395,6 +413,7 @@
 #define CONFIG_VIDEO_SW_CURSOR
 #define CONFIG_SPLASH_SCREEN
 
+#ifndef CONFIG_LCD4_LWMON5
 /*
  * USB/EHCI
  */
@@ -410,6 +429,7 @@
 #define CONFIG_MAC_PARTITION
 #define CONFIG_DOS_PARTITION
 #define CONFIG_ISO_PARTITION
+#endif
 
 /*
  * BOOTP options
@@ -444,9 +464,11 @@
 #define CONFIG_CMD_BMP
 #endif
 
+#ifndef CONFIG_LCD4_LWMON5
 #ifdef CONFIG_440EPX
 #define CONFIG_CMD_USB
 #endif
+#endif
 
 /*
  * Miscellaneous configurable options
@@ -480,11 +502,15 @@
 #define CONFIG_MX_CYCLIC        1       /* enable mdc/mwc commands      */
 #define CONFIG_VERSION_VARIABLE 1	/* include version env variable */
 
+#define CONFIG_SYS_CONSOLE_INFO_QUIET	/* don't print console @ startup*/
+
+#ifndef CONFIG_LCD4_LWMON5
 #ifndef DEBUG
 #define CONFIG_HW_WATCHDOG	1	/* Use external HW-Watchdog	*/
 #endif
 #define CONFIG_WD_PERIOD	40000	/* in usec */
 #define CONFIG_WD_MAX_RATE	66600	/* in ticks */
+#endif
 
 /*
  * For booting Linux, the board info and command line data
@@ -644,4 +670,40 @@
 #define CONFIG_KGDB_BAUDRATE	230400	/* speed to run kgdb serial port */
 #define CONFIG_KGDB_SER_INDEX	2	    /* which serial port to use */
 #endif
+
+/*
+ * SPL related defines
+ */
+#ifdef CONFIG_LCD4_LWMON5
+#define CONFIG_SPL
+#define CONFIG_SPL_FRAMEWORK
+#define CONFIG_SPL_BOARD_INIT
+#define CONFIG_SPL_NOR_SUPPORT
+#define CONFIG_SPL_TEXT_BASE		0xffff0000 /* last 64 KiB for SPL */
+#define CONFIG_SYS_SPL_MAX_LEN		(64 << 10)
+#define CONFIG_UBOOT_PAD_TO		458752	/* decimal for 'dd' */
+#define	CONFIG_SPL_START_S_PATH	"arch/powerpc/cpu/ppc4xx"
+#define CONFIG_SPL_LDSCRIPT	"arch/powerpc/cpu/ppc4xx/u-boot-spl.lds"
+#define CONFIG_SPL_LIBCOMMON_SUPPORT	/* image.c */
+#define CONFIG_SPL_LIBGENERIC_SUPPORT	/* string.c */
+#define CONFIG_SPL_SERIAL_SUPPORT
+
+/* Place BSS for SPL near end of SDRAM */
+#define CONFIG_SPL_BSS_START_ADDR	((256 - 1) << 20)
+#define CONFIG_SPL_BSS_MAX_SIZE		(64 << 10)
+
+#define CONFIG_SPL_OS_BOOT
+/* Place patched DT blob (fdt)@this address */
+#define CONFIG_SYS_SPL_ARGS_ADDR	0x01800000
+
+#define CONFIG_SPL_TARGET		"u-boot-img-spl-at-end.bin"
+
+/* Settings for real U-Boot to be loaded from NOR flash */
+#define CONFIG_SYS_UBOOT_BASE		(-CONFIG_SYS_MONITOR_LEN)
+#define CONFIG_SYS_UBOOT_START		0x01002100
+
+#define CONFIG_SYS_OS_BASE		0xf8000000
+#define CONFIG_SYS_FDT_BASE		0xf87c0000
+#endif
+
 #endif	/* __CONFIG_H */
-- 
1.8.1.5

[U-Boot] [PATCH 1/3] ppc4xx: Add SPL support

[Rommel G Custodio]

Dear Stefan Rose,

On 2013.02/22, Stefan Roese wrote:

> diff --git a/arch/powerpc/cpu/ppc4xx/Makefile b/arch/powerpc/cpu/ppc4xx/Makefile
> index 8da2f86..e301dc6 100644
> --- a/arch/powerpc/cpu/ppc4xx/Makefile
> +++ b/arch/powerpc/cpu/ppc4xx/Makefile
> @@ -68,6 +68,10 @@ COBJS	+= miiphy.o
>  COBJS	+= uic.o
>  endif
>  
> +ifdef CONFIG_SPL_BUILD
> +COBJS-y += spl_boot.o
> +endif
> +
>  SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
>  OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS) $(COBJS-y))
>  START	:= $(addprefix $(obj),$(START))

I think spl_boot.c is missing from this patch series.

All the best,
Rommel

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[U-Boot] [PATCH 1/3] ppc4xx: Add SPL support

[Stefan Roese]

Hi Rommel,

On 30.03.2013 03:04, Rommel G Custodio wrote:
>> diff --git a/arch/powerpc/cpu/ppc4xx/Makefile b/arch/powerpc/cpu/ppc4xx/Makefile
>> index 8da2f86..e301dc6 100644
>> --- a/arch/powerpc/cpu/ppc4xx/Makefile
>> +++ b/arch/powerpc/cpu/ppc4xx/Makefile
>> @@ -68,6 +68,10 @@ COBJS	+= miiphy.o
>>  COBJS	+= uic.o
>>  endif
>>  
>> +ifdef CONFIG_SPL_BUILD
>> +COBJS-y += spl_boot.o
>> +endif
>> +
>>  SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
>>  OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS) $(COBJS-y))
>>  START	:= $(addprefix $(obj),$(START))
> 
> I think spl_boot.c is missing from this patch series.

Yes, its missing. I'll resubmit shortly.

Thanks,
Stefan

[U-Boot] [PATCH 1/3 v2] ppc4xx: Add SPL support

[Stefan Roese]

This patch adds SPL booting support (NOR flash) for the
PPC4xx platforms.

This SPL booting (Falcon mode) will be used by the upcoming
lcd4_lwmon5 board port (lwmon5 variant).

Signed-off-by: Stefan Roese <sr@denx.de>
---
v2:
- Add missing spl_boot.c file

 arch/powerpc/cpu/ppc4xx/Makefile       |  4 ++
 arch/powerpc/cpu/ppc4xx/spl_boot.c     | 72 +++++++++++++++++++++++++++++++++
 arch/powerpc/cpu/ppc4xx/start.S        | 37 +++++++++++++++--
 arch/powerpc/cpu/ppc4xx/u-boot-spl.lds | 74 ++++++++++++++++++++++++++++++++++
 arch/powerpc/cpu/ppc4xx/u-boot.lds     |  2 +
 5 files changed, 185 insertions(+), 4 deletions(-)
 create mode 100644 arch/powerpc/cpu/ppc4xx/spl_boot.c
 create mode 100644 arch/powerpc/cpu/ppc4xx/u-boot-spl.lds

diff --git a/arch/powerpc/cpu/ppc4xx/Makefile b/arch/powerpc/cpu/ppc4xx/Makefile
index 8da2f86..e301dc6 100644
--- a/arch/powerpc/cpu/ppc4xx/Makefile
+++ b/arch/powerpc/cpu/ppc4xx/Makefile
@@ -68,6 +68,10 @@ COBJS	+= miiphy.o
 COBJS	+= uic.o
 endif
 
+ifdef CONFIG_SPL_BUILD
+COBJS-y += spl_boot.o
+endif
+
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS) $(COBJS-y))
 START	:= $(addprefix $(obj),$(START))
diff --git a/arch/powerpc/cpu/ppc4xx/spl_boot.c b/arch/powerpc/cpu/ppc4xx/spl_boot.c
new file mode 100644
index 0000000..39032ac
--- /dev/null
+++ b/arch/powerpc/cpu/ppc4xx/spl_boot.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2013 Stefan Roese <sr@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ */
+
+#include <common.h>
+#include <spl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Return selected boot device. On PPC4xx its only NOR flash right now.
+ */
+u32 spl_boot_device(void)
+{
+	return BOOT_DEVICE_NOR;
+}
+
+/*
+ * SPL version of board_init_f()
+ */
+void board_init_f(ulong bootflag)
+{
+	/*
+	 * First we need to initialize the SDRAM, so that the real
+	 * U-Boot or the OS (Linux) can be loaded
+	 */
+	initdram(0);
+
+	/* Clear bss */
+	memset(__bss_start, '\0', __bss_end__ - __bss_start);
+
+	/*
+	 * Init global_data pointer. Has to be done before calling
+	 * get_clocks(), as it stores some clock values into gd needed
+	 * later on in the serial driver.
+	 */
+	/* Pointer is writable since we allocated a register for it */
+	gd = (gd_t *)(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
+	/* Clear initial global data */
+	memset((void *)gd, 0, sizeof(gd_t));
+
+	/*
+	 * get_clocks() needs to be called so that the serial driver
+	 * works correctly
+	 */
+	get_clocks();
+
+	/*
+	 * Do rudimental console / serial setup
+	 */
+	preloader_console_init();
+
+	/*
+	 * Call board_init_r() (SPL framework version) to load and boot
+	 * real U-Boot or OS
+	 */
+	board_init_r(NULL, 0);
+	/* Does not return!!! */
+}
diff --git a/arch/powerpc/cpu/ppc4xx/start.S b/arch/powerpc/cpu/ppc4xx/start.S
index 7aef43b..ae990cc 100644
--- a/arch/powerpc/cpu/ppc4xx/start.S
+++ b/arch/powerpc/cpu/ppc4xx/start.S
@@ -232,7 +232,7 @@
  *
  * Use r12 to access the GOT
  */
-#if !defined(CONFIG_NAND_SPL)
+#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
 	START_GOT
 	GOT_ENTRY(_GOT2_TABLE_)
 	GOT_ENTRY(_FIXUP_TABLE_)
@@ -248,7 +248,8 @@
 	END_GOT
 #endif /* CONFIG_NAND_SPL */
 
-#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) && \
+	!defined(CONFIG_SPL_BUILD)
 	/*
 	 * NAND U-Boot image is started from offset 0
 	 */
@@ -270,6 +271,18 @@
 	bl	_start_440
 #endif
 
+#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
+	/*
+	 * This is the entry of the real U-Boot from a board port
+	 * that supports SPL booting on the PPC4xx. We only need
+	 * to call board_init_f() here. Everything else has already
+	 * been done in the SPL u-boot version.
+	 */
+	GET_GOT			/* initialize GOT access		*/
+	bl	board_init_f	/* run 1st part of board init code (in Flash)*/
+	/* NOTREACHED - board_init_f() does not return */
+#endif
+
 /*
  * 440 Startup -- on reset only the top 4k of the effective
  * address space is mapped in by an entry in the instruction
@@ -539,7 +552,7 @@ tlbnx2:	addi	r4,r4,1		/* Next TLB */
  * r3 - 1st arg to board_init(): IMMP pointer
  * r4 - 2nd arg to board_init(): boot flag
  */
-#ifndef CONFIG_NAND_SPL
+#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
 	.text
 	.long	0x27051956		/* U-Boot Magic Number			*/
 	.globl	version_string
@@ -612,6 +625,18 @@ _end_of_vectors:
 	.globl	_start
 _start:
 
+#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
+	/*
+	 * This is the entry of the real U-Boot from a board port
+	 * that supports SPL booting on the PPC4xx. We only need
+	 * to call board_init_f() here. Everything else has already
+	 * been done in the SPL u-boot version.
+	 */
+	GET_GOT			/* initialize GOT access		*/
+	bl	board_init_f	/* run 1st part of board init code (in Flash)*/
+	/* NOTREACHED - board_init_f() does not return */
+#endif
+
 /*****************************************************************************/
 #if defined(CONFIG_440)
 
@@ -796,7 +821,9 @@ _start:
 #ifdef CONFIG_NAND_SPL
 	bl	nand_boot_common	/* will not return */
 #else
+#ifndef CONFIG_SPL_BUILD
 	GET_GOT
+#endif
 
 	bl	cpu_init_f	/* run low-level CPU init code	   (from Flash) */
 	bl	board_init_f
@@ -1080,7 +1107,7 @@ _start:
 	/*----------------------------------------------------------------------- */
 
 
-#ifndef CONFIG_NAND_SPL
+#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
 /*
  * This code finishes saving the registers to the exception frame
  * and jumps to the appropriate handler for the exception.
@@ -1262,6 +1289,7 @@ in32r:
 	lwbrx	r3,r0,r3
 	blr
 
+#if !defined(CONFIG_SPL_BUILD)
 /*
  * void relocate_code (addr_sp, gd, addr_moni)
  *
@@ -1626,6 +1654,7 @@ __440_msr_continue:
 
 	mtlr	r4			/* restore link register	*/
 	blr
+#endif /* CONFIG_SPL_BUILD */
 
 #if defined(CONFIG_440)
 /*----------------------------------------------------------------------------+
diff --git a/arch/powerpc/cpu/ppc4xx/u-boot-spl.lds b/arch/powerpc/cpu/ppc4xx/u-boot-spl.lds
new file mode 100644
index 0000000..4634263
--- /dev/null
+++ b/arch/powerpc/cpu/ppc4xx/u-boot-spl.lds
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2012-2013 Stefan Roese <sr@denx.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+MEMORY
+{
+	sdram : ORIGIN = CONFIG_SPL_BSS_START_ADDR,
+		LENGTH = CONFIG_SPL_BSS_MAX_SIZE
+	flash : ORIGIN = CONFIG_SPL_TEXT_BASE,
+		LENGTH = CONFIG_SYS_SPL_MAX_LEN
+}
+
+OUTPUT_ARCH(powerpc)
+ENTRY(_start)
+SECTIONS
+{
+#ifdef CONFIG_440
+	.bootpg 0xfffff000 :
+	{
+		arch/powerpc/cpu/ppc4xx/start.o	(.bootpg)
+
+		/*
+		 * PPC440 board need a board specific object with the
+		 * TLB definitions. This needs to get included right after
+		 * start.o, since the first shadow TLB only covers 4k
+		 * of address space.
+		 */
+		CONFIG_BOARDDIR/init.o	(.bootpg)
+	} > flash
+#endif
+
+	.resetvec 0xFFFFFFFC :
+	{
+		KEEP(*(.resetvec))
+	} > flash
+
+	.text :
+	{
+		__start = .;
+		arch/powerpc/cpu/ppc4xx/start.o	(.text)
+		CONFIG_BOARDDIR/init.o	(.text)
+		*(.text*)
+	} > flash
+
+	. = ALIGN(4);
+	.data : { *(SORT_BY_ALIGNMENT(.data*)) } > flash
+
+	. = ALIGN(4);
+	.rodata : { *(SORT_BY_ALIGNMENT(.rodata*)) } > flash
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start = .;
+		*(.bss*)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	} > sdram
+}
diff --git a/arch/powerpc/cpu/ppc4xx/u-boot.lds b/arch/powerpc/cpu/ppc4xx/u-boot.lds
index a96ddd5..540f7ca 100644
--- a/arch/powerpc/cpu/ppc4xx/u-boot.lds
+++ b/arch/powerpc/cpu/ppc4xx/u-boot.lds
@@ -96,6 +96,7 @@ SECTIONS
   . = ALIGN(256);
   __init_end = .;
 
+#ifndef CONFIG_SPL
 #ifdef CONFIG_440
   .bootpg RESET_VECTOR_ADDRESS - 0xffc :
   {
@@ -132,6 +133,7 @@ SECTIONS
 #if (RESET_VECTOR_ADDRESS == 0xfffffffc)
   . |= 0x10;
 #endif
+#endif /* CONFIG_SPL */
 
   __bss_start = .;
   .bss (NOLOAD)       :
-- 
1.8.2

[U-Boot] [PATCH 1/3 v2] ppc4xx: Add SPL support

[Stefan Roese]

On 02.04.2013 10:37, Stefan Roese wrote:
> This patch adds SPL booting support (NOR flash) for the
> PPC4xx platforms.
> 
> This SPL booting (Falcon mode) will be used by the upcoming
> lcd4_lwmon5 board port (lwmon5 variant).
> 
> Signed-off-by: Stefan Roese <sr@denx.de>

Applied to u-boot-ppc4xx/master.

Thanks,
Stefan

[U-Boot] [PATCH 2/3] Makefile: Add target for combined u-boot.img & spl/u-boot.bin

[Stefan Roese]

On 22.02.2013 11:36, Stefan Roese wrote:
> This new make target "u-boot-img-spl-at-end.bin" consists of the
> the real, full-blown U-Boot image and the U-Boot SPL binary
> directly attached to it. The full-blown U-Boot image has the
> mkimage header included, with its load-address and entry-point.
> 
> This will be used by the upcoming lwmon5 PPC440EPx derivate board
> port.
> 
> Signed-off-by: Stefan Roese <sr@denx.de>

Applied to u-boot-ppc4xx/master.

Thanks,
Stefan

[U-Boot] [PATCH 3/3 v3] ppc4xx: Add lcd4_lwmon5 support

[Stefan Roese]

On 08.03.2013 16:50, Stefan Roese wrote:
> This patch adds the fast booting LWMON5 derivat "lcd4_lwmon5".
> Its a stripped down version of the full blown lwmon5 support,
> without ECC, USB, POST and some other stuff. It used the newly
> introduced SPL infrastrucure for SPL from NOR flash booting
> on the PPC4xx.
> 
> By setting the environment variable "boot_os" to "yes", Linux
> will be started from the SPL version. If not, the "normal"
> U-Boot will be started.
> 
> Signed-off-by: Stefan Roese <sr@denx.de>

Applied to u-boot-ppc4xx/master.

Thanks,
Stefan