* [U-Boot] [RFC][PATCH 04/19] arm, arm1136, qong: add relocation support
@ 2010-07-29 10:44 Heiko Schocher
0 siblings, 0 replies; only message in thread
From: Heiko Schocher @ 2010-07-29 10:44 UTC (permalink / raw)
To: u-boot
Signed-off-by: Heiko Schocher <hs@denx.de>
---
arch/arm/config.mk | 3 +
arch/arm/cpu/arm1136/start.S | 176 ++++++++++++++------
arch/arm/cpu/arm1136/u-boot.lds | 14 ++-
arch/arm/include/asm/config.h | 3 -
arch/arm/include/asm/global_data.h | 6 +
arch/arm/include/asm/u-boot-arm.h | 8 +-
arch/arm/lib/board.c | 315 ++++++++++++++++++++++++++++++------
arch/arm/lib/interrupts.c | 15 ++-
board/davedenx/qong/config.mk | 4 +-
board/davedenx/qong/qong.c | 92 ++++++-----
common/cmd_bdinfo.c | 1 +
common/cmd_bmp.c | 6 +
common/cmd_i2c.c | 6 +
include/configs/qong.h | 9 +
nand_spl/nand_boot.c | 5 +
nand_spl/nand_boot_fsl_nfc.c | 5 +
16 files changed, 519 insertions(+), 149 deletions(-)
diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index e10dafc..be79f50 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -33,6 +33,9 @@ STANDALONE_LOAD_ADDR = 0xc100000
endif
endif
+# needed for relocation
+PLATFORM_RELFLAGS += -fPIC
+
PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__
# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S
index 41eb82d..68ee309 100644
--- a/arch/arm/cpu/arm1136/start.S
+++ b/arch/arm/cpu/arm1136/start.S
@@ -85,13 +85,10 @@ _end_vect:
*************************************************************************
*/
+.globl _TEXT_BASE
_TEXT_BASE:
.word TEXT_BASE
-.globl _armboot_start
-_armboot_start:
- .word _start
-
/*
* These are defined in the board-specific linker script.
*/
@@ -103,6 +100,30 @@ _bss_start:
_bss_end:
.word _end
+.globl _datarel_start
+_datarel_start:
+ .word __datarel_start
+
+.globl _datarelrolocal_start
+_datarelrolocal_start:
+ .word __datarelrolocal_start
+
+.globl _datarellocal_start
+_datarellocal_start:
+ .word __datarellocal_start
+
+.globl _datarelro_start
+_datarelro_start:
+ .word __datarelro_start
+
+.globl _got_start
+_got_start:
+ .word __got_start
+
+.globl _got_end
+_got_end:
+ .word __got_end
+
#ifdef CONFIG_USE_IRQ
/* IRQ stack memory (calculated at run-time) */
.globl IRQ_STACK_START
@@ -115,6 +136,11 @@ FIQ_STACK_START:
.word 0x0badc0de
#endif
+/* IRQ stack memory (calculated at run-time) + 8 bytes */
+.globl IRQ_STACK_START_IN
+IRQ_STACK_START_IN:
+ .word 0x0badc0de
+
/*
* the actual reset code
*/
@@ -151,65 +177,119 @@ next:
bl cpu_init_crit
#endif
-#ifndef CONFIG_SKIP_RELOCATE_UBOOT
-relocate: /* relocate U-Boot to RAM */
- adr r0, _start /* r0 <- current position of code */
- ldr r1, _TEXT_BASE /* test if we run from flash or RAM */
- cmp r0, r1 /* don't reloc during debug */
-#ifndef CONFIG_PRELOADER
- beq stack_setup
-#endif /* CONFIG_PRELOADER */
+/* Set stackpointer in internal RAM to call board_init_f */
+call_board_init_f:
+ ldr sp, =(CONFIG_SYS_INIT_SP_ADDR)
+ ldr r0,=0x00000000
+
+#ifdef CONFIG_NAND_SPL
+ bl nand_boot
+#else
+#ifdef CONFIG_ONENAND_IPL
+ bl start_oneboot
+#else
+ bl board_init_f
+#endif /* CONFIG_ONENAND_IPL */
+#endif /* CONFIG_NAND_SPL */
+
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ */
+ .globl relocate_code
+relocate_code:
+ mov r4, r0 /* save addr_sp */
+ mov r5, r1 /* save addr of gd */
+ mov r6, r2 /* save addr of destination */
+ mov r7, r2 /* save addr of destination */
- ldr r2, _armboot_start
+ /* Set up the stack */
+stack_setup:
+ mov sp, r4
+
+ adr r0, _start
+ ldr r2, _TEXT_BASE
ldr r3, _bss_start
sub r2, r3, r2 /* r2 <- size of armboot */
add r2, r0, r2 /* r2 <- source end address */
+ cmp r0, r6
+ beq clear_bss
+#ifndef CONFIG_SKIP_RELOCATE_UBOOT
copy_loop:
- ldmia r0!, {r3-r10} /* copy from source address [r0] */
- stmia r1!, {r3-r10} /* copy to target address [r1] */
+ ldmia r0!, {r9-r10} /* copy from source address [r0] */
+ stmia r6!, {r9-r10} /* copy to target address [r1] */
cmp r0, r2 /* until source end addreee [r2] */
ble copy_loop
-#endif /* CONFIG_SKIP_RELOCATE_UBOOT */
- /* Set up the stack */
-stack_setup:
- ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
-#ifdef CONFIG_PRELOADER
- sub sp, r0, #128 /* leave 32 words for abort-stack */
-#else
- sub r0, r0, #CONFIG_SYS_MALLOC_LEN /* malloc area */
- sub r0, r0, #CONFIG_SYS_GBL_DATA_SIZE /* bdinfo */
-#ifdef CONFIG_USE_IRQ
- sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ)
+#ifndef CONFIG_PRELOADER
+ /* fix got entries */
+ ldr r1, _TEXT_BASE
+ mov r0, r7 /* reloc addr */
+ ldr r2, _got_start /* addr in Flash */
+ ldr r3, _got_end /* addr in Flash */
+ sub r3, r3, r1
+ add r3, r3, r0
+ sub r2, r2, r1
+ add r2, r2, r0
+
+fixloop:
+ ldr r4, [r2]
+ sub r4, r4, r1
+ add r4, r4, r0
+ str r4, [r2]
+ add r2, r2, #4
+ cmp r2, r3
+ bne fixloop
#endif
- sub sp, r0, #12 /* leave 3 words for abort-stack */
-#endif /* CONFIG_PRELOADER */
- bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
+#endif /* #ifndef CONFIG_SKIP_RELOCATE_UBOOT */
clear_bss:
- ldr r0, _bss_start /* find start of bss segment */
- ldr r1, _bss_end /* stop here */
+#ifndef CONFIG_PRELOADER
+ ldr r0, _bss_start
+ ldr r1, _bss_end
+ ldr r3, _TEXT_BASE /* Text base */
+ mov r4, r7 /* reloc addr */
+ sub r0, r0, r3
+ add r0, r0, r4
+ sub r1, r1, r3
+ add r1, r1, r4
mov r2, #0x00000000 /* clear */
-#ifndef CONFIG_PRELOADER
clbss_l:str r2, [r0] /* clear loop... */
add r0, r0, #4
cmp r0, r1
bne clbss_l
-#endif
-
- ldr pc, _start_armboot
+#endif /* #ifndef CONFIG_PRELOADER */
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
#ifdef CONFIG_NAND_SPL
-_start_armboot: .word nand_boot
-#else
-#ifdef CONFIG_ONENAND_IPL
-_start_armboot: .word start_oneboot
+ ldr pc, _nand_boot
+
+_nand_boot: .word nand_boot
#else
-_start_armboot: .word start_armboot
-#endif /* CONFIG_ONENAND_IPL */
-#endif /* CONFIG_NAND_SPL */
+jump_2_ram:
+ ldr r0, _TEXT_BASE
+ ldr r2, _board_init_r
+ sub r2, r2, r0
+ add r2, r2, r7 /* position from board_init_r in RAM */
+ /* setup parameters for board_init_r */
+ mov r0, r5 /* gd_t */
+ mov r1, r7 /* dest_addr */
+ /* jump to it ... */
+ mov lr, r2
+ mov pc, lr
+
+_board_init_r: .word board_init_r
+#endif
/*
*************************************************************************
@@ -295,9 +375,7 @@ cpu_init_crit:
sub sp, sp, #S_FRAME_SIZE @ carve out a frame on current user stack
stmia sp, {r0 - r12} @ Save user registers (now in svc mode) r0-r12
- ldr r2, _armboot_start
- sub r2, r2, #(CONFIG_SYS_MALLOC_LEN)
- sub r2, r2, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ set base 2 words into abort stack
+ ldr r2, IRQ_STACK_START_IN @ set base 2 words into abort stack
ldmia r2, {r2 - r3} @ get values for "aborted" pc and cpsr (into parm regs)
add r0, sp, #S_FRAME_SIZE @ grab pointer to old stack
@@ -328,9 +406,7 @@ cpu_init_crit:
.endm
.macro get_bad_stack
- ldr r13, _armboot_start @ setup our mode stack (enter in banked mode)
- sub r13, r13, #(CONFIG_SYS_MALLOC_LEN) @ move past malloc pool
- sub r13, r13, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ move to reserved a couple spots for abort stack
+ ldr r13, IRQ_STACK_START_IN @ setup our mode stack (enter in banked mode)
str lr, [r13] @ save caller lr in position 0 of saved stack
mrs lr, spsr @ get the spsr
@@ -346,9 +422,7 @@ cpu_init_crit:
.macro get_bad_stack_swi
sub r13, r13, #4 @ space on current stack for scratch reg.
str r0, [r13] @ save R0's value.
- ldr r0, _armboot_start @ get data regions start
- sub r0, r0, #(CONFIG_SYS_MALLOC_LEN) @ move past malloc pool
- sub r0, r0, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ move past gbl and a couple spots for abort stack
+ ldr r0, IRQ_STACK_START_IN @ get data regions start
str lr, [r0] @ save caller lr in position 0 of saved stack
mrs r0, spsr @ get the spsr
str lr, [r0, #4] @ save spsr in position 1 of saved stack
diff --git a/arch/arm/cpu/arm1136/u-boot.lds b/arch/arm/cpu/arm1136/u-boot.lds
index e7eefc9..1db4b49 100644
--- a/arch/arm/cpu/arm1136/u-boot.lds
+++ b/arch/arm/cpu/arm1136/u-boot.lds
@@ -47,11 +47,23 @@ SECTIONS
.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
. = ALIGN(4);
- .data : { *(.data) }
+ .data : {
+ *(.data)
+ __datarel_start = .;
+ *(.data.rel)
+ __datarelrolocal_start = .;
+ *(.data.rel.ro.local)
+ __datarellocal_start = .;
+ *(.data.rel.local)
+ __datarelro_start = .;
+ *(.data.rel.ro)
+ }
+ __got_start = .;
. = ALIGN(4);
.got : { *(.got) }
+ __got_end = .;
. = .;
__u_boot_cmd_start = .;
.u_boot_cmd : { *(.u_boot_cmd) }
diff --git a/arch/arm/include/asm/config.h b/arch/arm/include/asm/config.h
index b76fd8e..049c44e 100644
--- a/arch/arm/include/asm/config.h
+++ b/arch/arm/include/asm/config.h
@@ -21,7 +21,4 @@
#ifndef _ASM_CONFIG_H_
#define _ASM_CONFIG_H_
-/* Relocation to SDRAM works on all ARM boards */
-#define CONFIG_RELOC_FIXUP_WORKS
-
#endif
diff --git a/arch/arm/include/asm/global_data.h b/arch/arm/include/asm/global_data.h
index 02cfe45..192db7e 100644
--- a/arch/arm/include/asm/global_data.h
+++ b/arch/arm/include/asm/global_data.h
@@ -53,6 +53,12 @@ typedef struct global_data {
phys_size_t ram_size; /* RAM size */
unsigned long reset_status; /* reset status register@boot */
#endif
+ unsigned long relocaddr; /* Start address of U-Boot in RAM */
+ phys_size_t ram_size; /* RAM size */
+ unsigned long mon_len; /* monitor len */
+ unsigned long irq_sp; /* irq stack pointer */
+ unsigned long start_addr_sp; /* start_addr_stackpointer */
+ unsigned long reloc_off;
void **jt; /* jump table */
} gd_t;
diff --git a/arch/arm/include/asm/u-boot-arm.h b/arch/arm/include/asm/u-boot-arm.h
index 6d2f8bc..76f01a7 100644
--- a/arch/arm/include/asm/u-boot-arm.h
+++ b/arch/arm/include/asm/u-boot-arm.h
@@ -30,10 +30,15 @@
#define _U_BOOT_ARM_H_ 1
/* for the following variables, see start.S */
-extern ulong _armboot_start; /* code start */
+extern ulong _TEXT_BASE; /* code start */
extern ulong _bss_start; /* code + data end == BSS start */
extern ulong _bss_end; /* BSS end */
+extern ulong _datarel_start;
+extern ulong _datarelrolocal_start;
+extern ulong _datarellocal_start;
+extern ulong _datarelro_start;
extern ulong IRQ_STACK_START; /* top of IRQ stack */
+extern ulong IRQ_STACK_START_IN; /* 8 bytes in IRQ stack */
extern ulong FIQ_STACK_START; /* top of FIQ stack */
/* cpu/.../cpu.c */
@@ -47,6 +52,7 @@ int arch_misc_init(void);
/* board/.../... */
int board_init(void);
int dram_init (void);
+void dram_init_banksize (void);
void setup_serial_tag (struct tag **params);
void setup_revision_tag (struct tag **params);
diff --git a/arch/arm/lib/board.c b/arch/arm/lib/board.c
index f5660a9..18ac183 100644
--- a/arch/arm/lib/board.c
+++ b/arch/arm/lib/board.c
@@ -126,7 +126,8 @@ static int init_baudrate (void)
{
char tmp[64]; /* long enough for environment variables */
int i = getenv_r ("baudrate", tmp, sizeof (tmp));
- gd->bd->bi_baudrate = gd->baudrate = (i > 0)
+
+ gd->baudrate = (i > 0)
? (int) simple_strtoul (tmp, NULL, 10)
: CONFIG_BAUDRATE;
@@ -137,7 +138,7 @@ static int display_banner (void)
{
printf ("\n\n%s\n\n", version_string);
debug ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
- _armboot_start, _bss_start, _bss_end);
+ _TEXT_BASE, _bss_start, _bss_end);
#ifdef CONFIG_MODEM_SUPPORT
debug ("Modem Support enabled\n");
#endif
@@ -180,14 +181,6 @@ static int display_dram_config (void)
return (0);
}
-#ifndef CONFIG_SYS_NO_FLASH
-static void display_flash_config (ulong size)
-{
- puts ("Flash: ");
- print_size (size, "\n");
-}
-#endif /* CONFIG_SYS_NO_FLASH */
-
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
static int init_func_i2c (void)
{
@@ -238,9 +231,8 @@ init_fnc_t *init_sequence[] = {
#if defined(CONFIG_ARCH_CPU_INIT)
arch_cpu_init, /* basic arch cpu dependent setup */
#endif
- board_init, /* basic board dependent setup */
-#if defined(CONFIG_USE_IRQ)
- interrupt_init, /* set up exceptions */
+#if defined(CONFIG_BOARD_EARLY_INIT_F)
+ board_early_init_f,
#endif
timer_init, /* initialize timer */
#ifdef CONFIG_FSL_ESDHC
@@ -264,30 +256,24 @@ init_fnc_t *init_sequence[] = {
#if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
arm_pci_init,
#endif
- display_dram_config,
NULL,
};
-void start_armboot (void)
+void board_init_f (ulong bootflag)
{
+ bd_t *bd;
init_fnc_t **init_fnc_ptr;
- char *s;
-#if defined(CONFIG_VFD) || defined(CONFIG_LCD)
- unsigned long addr;
-#endif
+ gd_t *id;
+ ulong addr, addr_sp;
/* Pointer is writable since we allocated a register for it */
- gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
+ gd = (gd_t *) (CONFIG_SYS_INIT_SP_ADDR);
/* compiler optimization barrier needed for GCC >= 3.4 */
__asm__ __volatile__("": : :"memory");
memset ((void*)gd, 0, sizeof (gd_t));
- gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
- memset (gd->bd, 0, sizeof (bd_t));
-
- gd->flags |= GD_FLG_RELOC;
- monitor_flash_len = _bss_start - _armboot_start;
+ gd->mon_len = _bss_end - _TEXT_BASE;
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
if ((*init_fnc_ptr)() != 0) {
@@ -295,14 +281,48 @@ void start_armboot (void)
}
}
- /* armboot_start is defined in the board-specific linker script */
- mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN,
- CONFIG_SYS_MALLOC_LEN);
+ debug ("monitor len: %08lX\n", gd->mon_len);
+ /*
+ * Ram is setup, size stored in gd !!
+ */
+ debug ("ramsize: %08lX\n", gd->ram_size);
+#if defined(CONFIG_SYS_MEM_TOP_HIDE)
+ /*
+ * Subtract specified amount of memory to hide so that it won't
+ * get "touched" at all by U-Boot. By fixing up gd->ram_size
+ * the Linux kernel should now get passed the now "corrected"
+ * memory size and won't touch it either. This should work
+ * for arch/ppc and arch/powerpc. Only Linux board ports in
+ * arch/powerpc with bootwrapper support, that recalculate the
+ * memory size from the SDRAM controller setup will have to
+ * get fixed.
+ */
+ gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
+#endif
-#ifndef CONFIG_SYS_NO_FLASH
- /* configure available FLASH banks */
- display_flash_config (flash_init ());
-#endif /* CONFIG_SYS_NO_FLASH */
+ addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
+
+#ifdef CONFIG_LOGBUFFER
+#ifndef CONFIG_ALT_LB_ADDR
+ /* reserve kernel log buffer */
+ addr -= (LOGBUFF_RESERVE);
+ debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
+#endif
+#endif
+
+#ifdef CONFIG_PRAM
+ /*
+ * reserve protected RAM
+ */
+ i = getenv_r ("pram", (char *)tmp, sizeof (tmp));
+ reg = (i > 0) ? simple_strtoul ((const char *)tmp, NULL, 10) : CONFIG_PRAM;
+ addr -= (reg << 10); /* size is in kB */
+ debug ("Reserving %ldk for protected RAM@%08lx\n", reg, addr);
+#endif /* CONFIG_PRAM */
+
+ /* round down to next 4 kB limit */
+ addr &= ~(4096 - 1);
+ debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
#ifdef CONFIG_VFD
# ifndef PAGE_SIZE
@@ -311,27 +331,189 @@ void start_armboot (void)
/*
* reserve memory for VFD display (always full pages)
*/
- /* bss_end is defined in the board-specific linker script */
- addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
- vfd_setmem (addr);
+ addr -= vfd_setmem (addr);
gd->fb_base = addr;
#endif /* CONFIG_VFD */
#ifdef CONFIG_LCD
- /* board init may have inited fb_base */
- if (!gd->fb_base) {
-# ifndef PAGE_SIZE
-# define PAGE_SIZE 4096
-# endif
+ /* reserve memory for LCD display (always full pages) */
+ addr = lcd_setmem (addr);
+ gd->fb_base = addr;
+#endif /* CONFIG_LCD */
+
+ /*
+ * reserve memory for U-Boot code, data & bss
+ * round down to next 4 kB limit
+ */
+ addr -= gd->mon_len;
+ addr &= ~(4096 - 1);
+
+ debug ("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
+
+#ifndef CONFIG_PRELOADER
+ /*
+ * reserve memory for malloc() arena
+ */
+ addr_sp = addr - TOTAL_MALLOC_LEN;
+ debug ("Reserving %dk for malloc() at: %08lx\n",
+ TOTAL_MALLOC_LEN >> 10, addr_sp);
+ /*
+ * (permanently) allocate a Board Info struct
+ * and a permanent copy of the "global" data
+ */
+ addr_sp -= sizeof (bd_t);
+ bd = (bd_t *) addr_sp;
+ gd->bd = bd;
+ debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
+ sizeof (bd_t), addr_sp);
+ addr_sp -= sizeof (gd_t);
+ id = (gd_t *) addr_sp;
+ debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
+ sizeof (gd_t), addr_sp);
+
+ /* setup stackpointer for exeptions */
+ gd->irq_sp = addr_sp;
+#ifdef CONFIG_USE_IRQ
+ addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
+ debug ("Reserving %zu Bytes for IRQ stack at: %08lx\n",
+ CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
+#endif
+ /* leave 3 words for abort-stack */
+ addr_sp -= 3;
+
+ /* 8-byte alignment for ABI compliance */
+ addr_sp &= ~0x07;
+#else
+ addr_sp += 128; /* leave 32 words for abort-stack */
+ gd->irq_sp = addr_sp;
+#endif
+
+ debug ("New Stack Pointer is: %08lx\n", addr_sp);
+
+#ifdef CONFIG_POST
+ post_bootmode_init();
+ post_run (NULL, POST_ROM | post_bootmode_get(0));
+#endif
+
+ gd->bd->bi_baudrate = gd->baudrate;
+ /* Ram ist board specific, so move it to board code ... */
+ dram_init_banksize();
+ display_dram_config(); /* and display it */
+
+ gd->relocaddr = addr;
+ gd->start_addr_sp = addr_sp;
+ gd->reloc_off = addr - _TEXT_BASE;
+ debug ("relocation Offset is: %08lx\n", gd->reloc_off);
+ memcpy (id, (void *)gd, sizeof (gd_t));
+
+ relocate_code (addr_sp, id, addr);
+
+ /* NOTREACHED - relocate_code() does not return */
+}
+
+#if !defined(CONFIG_SYS_NO_FLASH)
+static char *failed = "*** failed ***\n";
+#endif
+
+/************************************************************************
+ *
+ * This is the next part if the initialization sequence: we are now
+ * running from RAM and have a "normal" C environment, i. e. global
+ * data can be written, BSS has been cleared, the stack size in not
+ * that critical any more, etc.
+ *
+ ************************************************************************
+ */
+void board_init_r (gd_t *id, ulong dest_addr)
+{
+ char *s;
+ bd_t *bd;
+ ulong malloc_start;
+#if !defined(CONFIG_SYS_NO_FLASH)
+ ulong flash_size;
+#endif
+#if !defined(CONFIG_RELOC_FIXUP_WORKS)
+ extern void malloc_bin_reloc (void);
+#if defined(CONFIG_CMD_BMP)
+ extern void bmp_reloc(void);
+#endif
+#if defined(CONFIG_CMD_I2C)
+ extern void i2c_reloc(void);
+#endif
+#endif
+
+ gd = id;
+ bd = gd->bd;
+
+ gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
+
+ monitor_flash_len = _bss_start - _TEXT_BASE;
+ debug ("monitor flash len: %08lX\n", monitor_flash_len);
+ board_init(); /* Setup chipselects */
+
+#ifdef CONFIG_SERIAL_MULTI
+ serial_initialize();
+#endif
+
+ debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
+
+#if !defined(CONFIG_RELOC_FIXUP_WORKS)
+ /*
+ * We have to relocate the command table manually
+ */
+ fixup_cmdtable(&__u_boot_cmd_start,
+ (ulong)(&__u_boot_cmd_end - &__u_boot_cmd_start));
+#if defined(CONFIG_CMD_BMP)
+ bmp_reloc();
+#endif
+#if defined(CONFIG_CMD_I2C)
+ i2c_reloc();
+#endif
+#endif /* !defined(CONFIG_RELOC_FIXUP_WORKS) */
+
+#ifdef CONFIG_LOGBUFFER
+ logbuff_init_ptrs ();
+#endif
+#ifdef CONFIG_POST
+ post_output_backlog ();
+#ifndef CONFIG_RELOC_FIXUP_WORKS
+ post_reloc ();
+#endif
+#endif
+
+ /* The Malloc area is immediately below the monitor copy in DRAM */
+ malloc_start = dest_addr - TOTAL_MALLOC_LEN;
+ mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
+#if !defined(CONFIG_RELOC_FIXUP_WORKS)
+ malloc_bin_reloc ();
+#endif
+
+#if !defined(CONFIG_SYS_NO_FLASH)
+ puts ("FLASH: ");
+
+ if ((flash_size = flash_init ()) > 0) {
+# ifdef CONFIG_SYS_FLASH_CHECKSUM
+ print_size (flash_size, "");
/*
- * reserve memory for LCD display (always full pages)
+ * Compute and print flash CRC if flashchecksum is set to 'y'
+ *
+ * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
*/
- /* bss_end is defined in the board-specific linker script */
- addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
- lcd_setmem (addr);
- gd->fb_base = addr;
+ s = getenv ("flashchecksum");
+ if (s && (*s == 'y')) {
+ printf (" CRC: %08X",
+ crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size)
+ );
+ }
+ putc ('\n');
+# else /* !CONFIG_SYS_FLASH_CHECKSUM */
+ print_size (flash_size, "\n");
+# endif /* CONFIG_SYS_FLASH_CHECKSUM */
+ } else {
+ puts (failed);
+ hang ();
}
-#endif /* CONFIG_LCD */
+#endif
#if defined(CONFIG_CMD_NAND)
puts ("NAND: ");
@@ -355,10 +537,6 @@ void start_armboot (void)
drv_vfd_init();
#endif /* CONFIG_VFD */
-#ifdef CONFIG_SERIAL_MULTI
- serial_initialize();
-#endif
-
/* IP Address */
gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
@@ -382,6 +560,8 @@ void start_armboot (void)
misc_init_r ();
#endif
+ /* set up exceptions */
+ interrupt_init ();
/* enable exceptions */
enable_interrupts ();
@@ -437,6 +617,41 @@ extern void davinci_eth_set_mac_addr (const u_int8_t *addr);
reset_phy();
#endif
#endif
+
+#ifdef CONFIG_POST
+ post_run (NULL, POST_RAM | post_bootmode_get(0));
+#endif
+
+#if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
+ /*
+ * Export available size of memory for Linux,
+ * taking into account the protected RAM at top of memory
+ */
+ {
+ ulong pram;
+ uchar memsz[32];
+#ifdef CONFIG_PRAM
+ char *s;
+
+ if ((s = getenv ("pram")) != NULL) {
+ pram = simple_strtoul (s, NULL, 10);
+ } else {
+ pram = CONFIG_PRAM;
+ }
+#else
+ pram=0;
+#endif
+#ifdef CONFIG_LOGBUFFER
+#ifndef CONFIG_ALT_LB_ADDR
+ /* Also take the logbuffer into account (pram is in kB) */
+ pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
+#endif
+#endif
+ sprintf ((char *)memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
+ setenv ("mem", (char *)memsz);
+ }
+#endif
+
/* main_loop() can return to retry autoboot, if so just run it again. */
for (;;) {
main_loop ();
diff --git a/arch/arm/lib/interrupts.c b/arch/arm/lib/interrupts.c
index 1f2b815..74ff5ce 100644
--- a/arch/arm/lib/interrupts.c
+++ b/arch/arm/lib/interrupts.c
@@ -38,15 +38,16 @@
#include <common.h>
#include <asm/proc-armv/ptrace.h>
-#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
+#ifdef CONFIG_USE_IRQ
int interrupt_init (void)
{
/*
* setup up stacks if necessary
*/
- IRQ_STACK_START = _armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4;
+ IRQ_STACK_START = gd->irq_sp - 4;
+ IRQ_STACK_START_IN = gd->irq_sp + 8;
FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
return arch_interrupt_init();
@@ -81,6 +82,16 @@ int disable_interrupts (void)
return (old & 0x80) == 0;
}
#else
+int interrupt_init (void)
+{
+ /*
+ * setup up stacks if necessary
+ */
+ IRQ_STACK_START_IN = gd->irq_sp + 8;
+
+ return 0;
+}
+
void enable_interrupts (void)
{
return;
diff --git a/board/davedenx/qong/config.mk b/board/davedenx/qong/config.mk
index d8d0a57..39c1203 100644
--- a/board/davedenx/qong/config.mk
+++ b/board/davedenx/qong/config.mk
@@ -1 +1,3 @@
-TEXT_BASE = 0x8ff00000
+TEXT_BASE = 0xa0000000
+
+# PLATFORM_CPPFLAGS += -DDEBUG
diff --git a/board/davedenx/qong/qong.c b/board/davedenx/qong/qong.c
index 781333b..88d1231 100644
--- a/board/davedenx/qong/qong.c
+++ b/board/davedenx/qong/qong.c
@@ -33,11 +33,17 @@ DECLARE_GLOBAL_DATA_PTR;
int dram_init (void)
{
+ /* dram_init must store complete ramsize in gd->ram_size */
+ gd->ram_size = get_ram_size((volatile void *)PHYS_SDRAM_1,
+ PHYS_SDRAM_1_SIZE);
+ return 0;
+}
+
+void dram_init_banksize (void)
+{
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
- gd->bd->bi_dram[0].size = get_ram_size((volatile void *)PHYS_SDRAM_1,
- PHYS_SDRAM_1_SIZE);
+ gd->bd->bi_dram[0].size = gd->ram_size;
- return 0;
}
static void qong_fpga_reset(void)
@@ -49,6 +55,49 @@ static void qong_fpga_reset(void)
udelay(300);
}
+int board_early_init_f (void)
+{
+#ifdef CONFIG_QONG_FPGA
+ /* CS1: FPGA/Network Controller/GPIO */
+ /* 16-bit, no DTACK */
+ __REG(CSCR_U(1)) = 0x00000A01;
+ __REG(CSCR_L(1)) = 0x20040501;
+ __REG(CSCR_A(1)) = 0x04020C00;
+
+ /* setup pins for FPGA */
+ mx31_gpio_mux(IOMUX_MODE(0x76, MUX_CTL_GPIO));
+ mx31_gpio_mux(IOMUX_MODE(0x7e, MUX_CTL_GPIO));
+ mx31_gpio_mux(IOMUX_MODE(0x91, MUX_CTL_OUT_FUNC | MUX_CTL_IN_GPIO));
+ mx31_gpio_mux(IOMUX_MODE(0x92, MUX_CTL_GPIO));
+ mx31_gpio_mux(IOMUX_MODE(0x93, MUX_CTL_GPIO));
+
+ /* FPGA reset Pin */
+ /* rstn = 0 */
+ mx31_gpio_set(QONG_FPGA_RST_PIN, 0);
+ mx31_gpio_direction(QONG_FPGA_RST_PIN, MX31_GPIO_DIRECTION_OUT);
+
+ /* set interrupt pin as input */
+ mx31_gpio_direction(QONG_FPGA_IRQ_PIN, MX31_GPIO_DIRECTION_IN);
+
+#endif
+
+ /* setup pins for UART1 */
+ mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX);
+ mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX);
+ mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
+ mx31_gpio_mux(MUX_CTS1__UART1_CTS_B);
+
+ /* setup pins for SPI (pmic) */
+ mx31_gpio_mux(MUX_CSPI2_SS0__CSPI2_SS0_B);
+ mx31_gpio_mux(MUX_CSPI2_MOSI__CSPI2_MOSI);
+ mx31_gpio_mux(MUX_CSPI2_MISO__CSPI2_MISO);
+ mx31_gpio_mux(MUX_CSPI2_SCLK__CSPI2_CLK);
+ mx31_gpio_mux(MUX_CSPI2_SPI_RDY__CSPI2_DATAREADY_B);
+
+ return 0;
+
+}
+
int board_init (void)
{
/* Chip selects */
@@ -99,43 +148,6 @@ int board_init (void)
(0 << 0) /* FCE */
);
-#ifdef CONFIG_QONG_FPGA
- /* CS1: FPGA/Network Controller/GPIO */
- /* 16-bit, no DTACK */
- __REG(CSCR_U(1)) = 0x00000A01;
- __REG(CSCR_L(1)) = 0x20040501;
- __REG(CSCR_A(1)) = 0x04020C00;
-
- /* setup pins for FPGA */
- mx31_gpio_mux(IOMUX_MODE(0x76, MUX_CTL_GPIO));
- mx31_gpio_mux(IOMUX_MODE(0x7e, MUX_CTL_GPIO));
- mx31_gpio_mux(IOMUX_MODE(0x91, MUX_CTL_OUT_FUNC | MUX_CTL_IN_GPIO));
- mx31_gpio_mux(IOMUX_MODE(0x92, MUX_CTL_GPIO));
- mx31_gpio_mux(IOMUX_MODE(0x93, MUX_CTL_GPIO));
-
- /* FPGA reset Pin */
- /* rstn = 0 */
- mx31_gpio_set(QONG_FPGA_RST_PIN, 0);
- mx31_gpio_direction(QONG_FPGA_RST_PIN, MX31_GPIO_DIRECTION_OUT);
-
- /* set interrupt pin as input */
- mx31_gpio_direction(QONG_FPGA_IRQ_PIN, MX31_GPIO_DIRECTION_IN);
-
-#endif
-
- /* setup pins for UART1 */
- mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX);
- mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX);
- mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
- mx31_gpio_mux(MUX_CTS1__UART1_CTS_B);
-
- /* setup pins for SPI (pmic) */
- mx31_gpio_mux(MUX_CSPI2_SS0__CSPI2_SS0_B);
- mx31_gpio_mux(MUX_CSPI2_MOSI__CSPI2_MOSI);
- mx31_gpio_mux(MUX_CSPI2_MISO__CSPI2_MISO);
- mx31_gpio_mux(MUX_CSPI2_SCLK__CSPI2_CLK);
- mx31_gpio_mux(MUX_CSPI2_SPI_RDY__CSPI2_DATAREADY_B);
-
/* board id for linux */
gd->bd->bi_arch_number = MACH_TYPE_QONG;
gd->bd->bi_boot_params = (0x80000100); /* adress of boot parameters */
diff --git a/common/cmd_bdinfo.c b/common/cmd_bdinfo.c
index cc81543..57a2243 100644
--- a/common/cmd_bdinfo.c
+++ b/common/cmd_bdinfo.c
@@ -343,6 +343,7 @@ int do_bdinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
printf ("ip_addr = %pI4\n", &bd->bi_ip_addr);
#endif
printf ("baudrate = %d bps\n", bd->bi_baudrate);
+ print_num ("irq_sp", gd->irq_sp); /* irq stack pointer */
return 0;
}
diff --git a/common/cmd_bmp.c b/common/cmd_bmp.c
index d51cc55..6fa8a15 100644
--- a/common/cmd_bmp.c
+++ b/common/cmd_bmp.c
@@ -137,6 +137,12 @@ static cmd_tbl_t cmd_bmp_sub[] = {
U_BOOT_CMD_MKENT(display, 5, 0, do_bmp_display, "", ""),
};
+#ifndef CONFIG_RELOC_FIXUP_WORKS
+void bmp_reloc(void) {
+ fixup_cmdtable(cmd_bmp_sub, ARRAY_SIZE(cmd_bmp_sub));
+}
+#endif
+
/*
* Subroutine: do_bmp
*
diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c
index 371e022..a1a84a1 100644
--- a/common/cmd_i2c.c
+++ b/common/cmd_i2c.c
@@ -1287,6 +1287,12 @@ static cmd_tbl_t cmd_i2c_sub[] = {
U_BOOT_CMD_MKENT(speed, 1, 1, do_i2c_bus_speed, "", ""),
};
+#ifndef CONFIG_RELOC_FIXUP_WORKS
+void i2c_reloc(void) {
+ fixup_cmdtable(cmd_i2c_sub, ARRAY_SIZE(cmd_i2c_sub));
+}
+#endif
+
static int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
cmd_tbl_t *c;
diff --git a/include/configs/qong.h b/include/configs/qong.h
index 100fa3f..0d6718c 100644
--- a/include/configs/qong.h
+++ b/include/configs/qong.h
@@ -281,4 +281,13 @@ extern int qong_nand_rdy(void *chip);
"mtdparts=physmap-flash.0:384k(U-Boot),128k(env1)," \
"128k(env2),2432k(kernel),13m(ramdisk),-(user)"
+/* additions for new relocation code, must added to all boards */
+#define CONFIG_SYS_SDRAM_BASE 0x80000000
+#define CONFIG_SYS_INIT_RAM_ADDR IRAM_BASE_ADDR
+#define CONFIG_SYS_INIT_RAM_END IRAM_SIZE
+#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_END - CONFIG_SYS_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET)
+
+#define CONFIG_BOARD_EARLY_INIT_F 1
+
#endif /* __CONFIG_H */
diff --git a/nand_spl/nand_boot.c b/nand_spl/nand_boot.c
index b9fd6f5..ded0c0e 100644
--- a/nand_spl/nand_boot.c
+++ b/nand_spl/nand_boot.c
@@ -221,6 +221,11 @@ static int nand_load(struct mtd_info *mtd, unsigned int offs,
return 0;
}
+void board_init_f (ulong bootflag)
+{
+ relocate_code (TEXT_BASE - TOTAL_MALLOC_LEN, NULL, TEXT_BASE);
+}
+
/*
* The main entry for NAND booting. It's necessary that SDRAM is already
* configured and available since this code loads the main U-Boot image
diff --git a/nand_spl/nand_boot_fsl_nfc.c b/nand_spl/nand_boot_fsl_nfc.c
index bfae30e..9720f6a 100644
--- a/nand_spl/nand_boot_fsl_nfc.c
+++ b/nand_spl/nand_boot_fsl_nfc.c
@@ -265,6 +265,11 @@ static int nand_load(unsigned int from, unsigned int size, unsigned char *buf)
return 0;
}
+void board_init_f (ulong bootflag)
+{
+ relocate_code (TEXT_BASE - TOTAL_MALLOC_LEN, NULL, TEXT_BASE);
+}
+
/*
* The main entry for NAND booting. It's necessary that SDRAM is already
* configured and available since this code loads the main U-Boot image
--
1.6.2.5
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
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2010-07-29 10:44 [U-Boot] [RFC][PATCH 04/19] arm, arm1136, qong: add relocation support Heiko Schocher
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