[U-Boot] [PATCH v3 04/10] ARMV7: Add support for TI OMAP4 Panda

Steve Sakoman
2010-06-18T20:42:35Z

OMAP4 Panda is a reference board based on OMAP4430, an ARMV7 Cortex A9 CPU

This patch adds minimum support for booting the board. It assumes U-boot
is loaded to SDRAM with the help of another small bootloader (x-load)
running from SRAM. U-boot currently relies on x-load for clock, mux, and
SDRAM initialization

Signed-off-by: Steve Sakoman <steve@sakoman.com>
---
MAINTAINERS | 1 +
MAKEALL | 1 +
board/ti/panda/Makefile | 49 ++++++++++++
board/ti/panda/config.mk | 32 ++++++++
board/ti/panda/panda.c | 61 ++++++++++++++
boards.cfg | 1 +
include/configs/omap4_panda.h | 174 +++++++++++++++++++++++++++++++++++++++++
7 files changed, 319 insertions(+), 0 deletions(-)
create mode 100644 board/ti/panda/Makefile
create mode 100644 board/ti/panda/config.mk
create mode 100644 board/ti/panda/panda.c
create mode 100644 include/configs/omap4_panda.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 36327ed..a5db970 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -756,6 +756,7 @@ Nomadik Linux Team <STN_WMM_nomadik_linux@list.st.com>
Steve Sakoman <sakoman@gmail.com>

omap3_overo ARM ARMV7 (OMAP3xx SoC)
+ omap4_panda ARM ARMV7 (OMAP4xx SoC)
omap4_sdp4430 ARM ARMV7 (OMAP4xx SoC)

Jens Scharsig <esw@bus-elektronik.de>
diff --git a/MAKEALL b/MAKEALL
index 6acd69d..5413f6d 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -654,6 +654,7 @@ LIST_ARMV7=" \
omap3_sdp3430 \
omap3_zoom1 \
omap3_zoom2 \
+ omap4_panda \
omap4_sdp4430 \
s5p_goni \
smdkc100 \
diff --git a/board/ti/panda/Makefile b/board/ti/panda/Makefile
new file mode 100644
index 0000000..81e5469
--- /dev/null
+++ b/board/ti/panda/Makefile
@@ -0,0 +1,49 @@
+#
+# (C) Copyright 2000, 2001, 2002
+# Wolfgang Denk, DENX Software Engineering, wd at 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.
+#
+# 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
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(BOARD).a
+
+COBJS := panda.o
+
+SRCS := $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS))
+
+$(LIB): $(obj).depend $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+clean:
+ rm -f $(OBJS)
+
+distclean: clean
+ rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/ti/panda/config.mk b/board/ti/panda/config.mk
new file mode 100644
index 0000000..7382263
--- /dev/null
+++ b/board/ti/panda/config.mk
@@ -0,0 +1,32 @@
+#
+# (C) Copyright 2006-2009
+# Texas Instruments Incorporated, <www.ti.com>
+#
+# OMAP 4430 SDP
+# see http://www.ti.com/ for more information on Texas Instruments
+#
+# 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.
+#
+# 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
+#
+# SDRAM Address Space:
+# 8000'0000 - 9fff'ffff (512 MB)
+# Linux-Kernel is expected to be at 8000'8000, entry 8000'8000
+# (mem base + reserved)
+
+# Let's place u-boot 1MB before the end of SDRAM.
+TEXT_BASE = 0x9ff00000
diff --git a/board/ti/panda/panda.c b/board/ti/panda/panda.c
new file mode 100644
index 0000000..46a5d1d
--- /dev/null
+++ b/board/ti/panda/panda.c
@@ -0,0 +1,61 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments Incorporated, <www.ti.com>
+ * Steve Sakoman <steve@sakoman.com>
+ *
+ * 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.
+ *
+ * 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
+ */
+#include <common.h>
+#include <asm/arch/sys_proto.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+const struct omap_sysinfo sysinfo = {
+ "Board: OMAP4 Panda\n"
+};
+
+/**
+ * @brief board_init
+ *
+ * @return 0
+ */
+int board_init(void)
+{
+ gd->bd->bi_arch_number = MACH_TYPE_OMAP4_PANDA;
+ gd->bd->bi_boot_params = (0x80000000 + 0x100); /* boot param addr */
+
+ return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+ return 0;
+}
+
+/**
+ * @brief misc_init_r - Configure Panda board specific configurations
+ * such as power configurations, ethernet initialization as phase2 of
+ * boot sequence
+ *
+ * @return 0
+ */
+int misc_init_r(void)
+{
+ return 0;
+}
diff --git a/boards.cfg b/boards.cfg
index 7bf0dee..7091ac4 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -261,6 +261,7 @@ omap3_zoom2 arm armv7 zoom2 logicpd omap3
omap3_beagle arm armv7 beagle ti omap3
omap3_evm arm armv7 evm ti omap3
omap3_sdp3430 arm armv7 sdp3430 ti omap3
+omap4_panda arm armv7 panda ti omap4
omap4_sdp4430 arm armv7 sdp4430 ti omap4
devkit8000 arm armv7 devkit8000 timll omap3
smdkc100 arm armv7 smdkc100 samsung s5pc1xx
diff --git a/include/configs/omap4_panda.h b/include/configs/omap4_panda.h
new file mode 100644
index 0000000..5b96b2e
--- /dev/null
+++ b/include/configs/omap4_panda.h
@@ -0,0 +1,174 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments Incorporated.
+ * Steve Sakoman <steve@sakoman.com>
+ *
+ * Configuration settings for the TI OMAP4 Panda board.
+ *
+ * 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.
+ *
+ * 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
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/*
+ * High Level Configuration Options
+ */
+#define CONFIG_ARMV7 1 /* This is an ARM V7 CPU core */
+#define CONFIG_OMAP 1 /* in a TI OMAP core */
+#define CONFIG_OMAP44XX 1 /* which is a 44XX */
+#define CONFIG_OMAP4430 1 /* which is in a 4430 */
+#define CONFIG_PANDA 1 /* working with Panda */
+
+/* Get CPU defs */
+#include <asm/arch/cpu.h>
+#include <asm/arch/omap4.h>
+
+/* Display CPU and Board Info */
+#define CONFIG_DISPLAY_CPUINFO 1
+#define CONFIG_DISPLAY_BOARDINFO 1
+
+/* Keep L2 Cache Disabled */
+#define CONFIG_L2_OFF 1
+
+/* Clock Defines */
+#define V_OSCK 38400000 /* Clock output from T2 */
+#define V_SCLK V_OSCK
+
+#undef CONFIG_USE_IRQ /* no support for IRQs */
+#define CONFIG_MISC_INIT_R
+
+#define CONFIG_CMDLINE_TAG 1 /* enable passing of ATAGs */
+#define CONFIG_SETUP_MEMORY_TAGS 1
+#define CONFIG_INITRD_TAG 1
+#define CONFIG_REVISION_TAG 1
+
+/*
+ * Size of malloc() pool
+ * Total Size Environment - 256k
+ * Malloc - add 256k
+ */
+#define CONFIG_ENV_SIZE (256 << 10)
+#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + (256 << 10))
+#define CONFIG_SYS_GBL_DATA_SIZE 128 /* bytes reserved for */
+ /* initial data */
+/* Vector Base */
+#define CONFIG_SYS_CA9_VECTOR_BASE SRAM_ROM_VECT_BASE
+
+/*
+ * Hardware drivers
+ */
+
+/*
+ * serial port - NS16550 compatible
+ */
+#define V_NS16550_CLK 48000000
+
+#define CONFIG_SYS_NS16550
+#define CONFIG_SYS_NS16550_SERIAL
+#define CONFIG_SYS_NS16550_REG_SIZE (-4)
+#define CONFIG_SYS_NS16550_CLK V_NS16550_CLK
+#define CONFIG_CONS_INDEX 3
+#define CONFIG_SYS_NS16550_COM3 UART3_BASE
+
+#define CONFIG_ENV_IS_NOWHERE
+#define CONFIG_ENV_OVERWRITE
+#define CONFIG_BAUDRATE 115200
+#define CONFIG_SYS_BAUDRATE_TABLE {4800, 9600, 19200, 38400, 57600,\
+ 115200}
+
+/* Flash */
+#define CONFIG_SYS_NO_FLASH 1
+
+/* commands to include */
+#include <config_cmd_default.h>
+
+/* Disabled commands */
+#undef CONFIG_CMD_NET
+#undef CONFIG_CMD_FPGA /* FPGA configuration Support */
+#undef CONFIG_CMD_IMLS /* List all found images */
+
+/*
+ * Enabling relocation of u-boot by default
+ * Relocation can be skipped if u-boot is copied to the TEXT_BASE
+ */
+#undef CONFIG_SKIP_RELOCATE_UBOOT
+
+/*
+ * Environment setup
+ */
+
+/* allow overwriting serial config and ethaddr */
+#define CONFIG_ENV_OVERWRITE
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+ "loadaddr=0x82000000\0" \
+ "console=ttyS2,115200n8\0" \
+
+#define CONFIG_AUTO_COMPLETE 1
+
+/*
+ * Miscellaneous configurable options
+ */
+
+#define CONFIG_SYS_LONGHELP /* undef to save memory */
+#define CONFIG_SYS_HUSH_PARSER /* use "hush" command parser */
+#define CONFIG_SYS_PROMPT_HUSH_PS2 "> "
+#define CONFIG_SYS_PROMPT "OMAP4430 SDP # "
+#define CONFIG_SYS_CBSIZE 256
+/* Print Buffer Size */
+#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
+ sizeof(CONFIG_SYS_PROMPT) + 16)
+#define CONFIG_SYS_MAXARGS 16
+/* Boot Argument Buffer Size */
+#define CONFIG_SYS_BARGSIZE (CONFIG_SYS_CBSIZE)
+
+/*
+ * memtest setup
+ */
+#define CONFIG_SYS_MEMTEST_START 0x80000000
+#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_MEMTEST_START + (32 << 20))
+
+/* Default load address */
+#define CONFIG_SYS_LOAD_ADDR 0x80000000
+
+/* Use General purpose timer 1 */
+#define CONFIG_SYS_TIMERBASE GPT1_BASE
+#define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */
+#define CONFIG_SYS_HZ 1000
+
+/*
+ * Stack sizes
+ *
+ * The stack sizes are set up in start.S using the settings below
+ */
+#define CONFIG_STACKSIZE (128 << 10) /* Regular stack */
+#ifdef CONFIG_USE_IRQ
+#define CONFIG_STACKSIZE_IRQ (4 << 10) /* IRQ stack */
+#define CONFIG_STACKSIZE_FIQ (4 << 10) /* FIQ stack */
+#endif
+
+/*
+ * SDRAM Memory Map
+ * Even though we use two CS all the memory
+ * is mapped to one contiguous block
+ */
+#define CONFIG_NR_DRAM_BANKS 1
+
+#endif /* __CONFIG_H */
--
1.7.0.4