Signed-off-by: Heiko Schocher hs@denx.de Cc: Albert ARIBAUD albert.u.boot@aribaud.net Cc: Sandeep Paulraj s-paulraj@ti.com Cc: Scott Wood scottwood@freescale.com Cc: Tom Rini trini@ti.com
--- change for v6: - moved arch/arm/cpu/arm926ejs/davinci/spl_nand.c to drivers/mtd/nand/nand_spl_load.c as Scoot Wood suggested. compiled through CONFIG_SPL_NAND_LOAD define
changes for v7: - add comments from Scott Wood: - removed unnecessary inline - add only a comment after #ifdef CONFIG_SPL_BUILD that says: /* not set with legacy CONFIG_NAND_SPL */ - replaced tab with space in drivers/mtd/nand/Makefile - changed indent/alignment in drivers/mtd/nand/nand_spl_load.c
Makefile | 8 +++- arch/arm/cpu/arm926ejs/davinci/Makefile | 5 ++ arch/arm/cpu/arm926ejs/davinci/spl.c | 63 +++++++++++++++++++++++++++++++ arch/arm/cpu/arm926ejs/start.S | 19 +++++++++- doc/README.SPL | 1 + drivers/mtd/nand/Makefile | 3 + drivers/mtd/nand/nand_spl_load.c | 56 +++++++++++++++++++++++++++ 7 files changed, 152 insertions(+), 3 deletions(-) create mode 100644 arch/arm/cpu/arm926ejs/davinci/spl.c create mode 100644 drivers/mtd/nand/nand_spl_load.c
diff --git a/Makefile b/Makefile index 9ef33f9..46a6e78 100644 --- a/Makefile +++ b/Makefile @@ -415,9 +415,13 @@ $(obj)u-boot.sha1: $(obj)u-boot.bin $(obj)u-boot.dis: $(obj)u-boot $(OBJDUMP) -d $< > $@
-$(obj)u-boot.ubl: $(obj)u-boot-nand.bin +$(obj)u-boot.ubl: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin + $(OBJCOPY) ${OBJCFLAGS} --pad-to=$(PAD_TO) -O binary $(obj)spl/u-boot-spl $(obj)spl/u-boot-spl-pad.bin + cat $(obj)spl/u-boot-spl-pad.bin $(obj)u-boot.bin > $(obj)u-boot-ubl.bin $(obj)tools/mkimage -n $(UBL_CONFIG) -T ublimage \ - -e $(CONFIG_SYS_TEXT_BASE) -d $< $@ + -e $(CONFIG_SYS_TEXT_BASE) -d $(obj)u-boot-ubl.bin $(obj)u-boot.ubl + rm $(obj)u-boot-ubl.bin + rm $(obj)spl/u-boot-spl-pad.bin
ifeq ($(CONFIG_SANDBOX),y) GEN_UBOOT = \ diff --git a/arch/arm/cpu/arm926ejs/davinci/Makefile b/arch/arm/cpu/arm926ejs/davinci/Makefile index 0310957..98c7e55 100644 --- a/arch/arm/cpu/arm926ejs/davinci/Makefile +++ b/arch/arm/cpu/arm926ejs/davinci/Makefile @@ -35,6 +35,11 @@ COBJS-$(CONFIG_SOC_DM644X) += dm644x.o COBJS-$(CONFIG_SOC_DM646X) += dm646x.o COBJS-$(CONFIG_DRIVER_TI_EMAC) += lxt972.o dp83848.o et1011c.o ksz8873.o
+ifdef CONFIG_SPL_BUILD +COBJS-y += spl.o +COBJS-y += dm365_lowlevel.o +endif + SOBJS = reset.o
ifndef CONFIG_SKIP_LOWLEVEL_INIT diff --git a/arch/arm/cpu/arm926ejs/davinci/spl.c b/arch/arm/cpu/arm926ejs/davinci/spl.c new file mode 100644 index 0000000..db69be8 --- /dev/null +++ b/arch/arm/cpu/arm926ejs/davinci/spl.c @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2011 + * Heiko Schocher, DENX Software Engineering, hs@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 <common.h> +#include <asm/u-boot.h> +#include <asm/utils.h> +#include <nand.h> +#include <asm/arch/dm365_lowlevel.h> +#include <ns16550.h> + +void puts(const char *str) +{ + while (*str) + putc(*str++); +} + +void putc(char c) +{ + if (c == '\n') + NS16550_putc((NS16550_t)(CONFIG_SYS_NS16550_COM1), '\r'); + + NS16550_putc((NS16550_t)(CONFIG_SYS_NS16550_COM1), c); +} + +void hang(void) +{ + puts("### ERROR ### Please RESET the board ###\n"); + for (;;) + ; +} + +void board_init_f(ulong dummy) +{ + dm36x_lowlevel_init(0); + relocate_code(CONFIG_SPL_STACK, NULL, CONFIG_SPL_TEXT_BASE); +} + +void board_init_r(gd_t *id, ulong dummy) +{ + + nand_init(); + puts("Nand boot...\n"); + nand_boot(); +} diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S index 86a0dc2..5ffc653 100644 --- a/arch/arm/cpu/arm926ejs/start.S +++ b/arch/arm/cpu/arm926ejs/start.S @@ -126,7 +126,12 @@ _fiq:
.globl _TEXT_BASE _TEXT_BASE: +#ifdef CONFIG_SPL_BUILD + /* not set with legacy CONFIG_NAND_SPL */ + .word CONFIG_SPL_TEXT_BASE +#else .word CONFIG_SYS_TEXT_BASE +#endif
/* * These are defined in the board-specific linker script. @@ -192,7 +197,12 @@ reset:
/* Set stackpointer in internal RAM to call board_init_f */ call_board_init_f: +#ifdef CONFIG_SPL_BUILD + /* not set with legacy CONFIG_NAND_SPL */ + ldr sp, =(CONFIG_SPL_STACK) +#else ldr sp, =(CONFIG_SYS_INIT_SP_ADDR) +#endif bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ ldr r0,=0x00000000 bl board_init_f @@ -217,6 +227,7 @@ stack_setup: mov sp, r4
adr r0, _start + sub r9, r6, r0 /* r9 <- relocation offset */ cmp r0, r6 beq clear_bss /* skip relocation */ mov r1, r6 /* r1 <- scratch for copy loop */ @@ -271,12 +282,17 @@ fixnext: #endif
clear_bss: -#ifndef CONFIG_SPL_BUILD +#ifdef CONFIG_SPL_BUILD + /* No relocation for SPL */ + ldr r0, =__bss_start + ldr r1, =__bss_end__ +#else ldr r0, _bss_start_ofs ldr r1, _bss_end_ofs mov r4, r6 /* reloc addr */ add r0, r0, r4 add r1, r1, r4 +#endif mov r2, #0x00000000 /* clear */
clbss_l:str r2, [r0] /* clear loop... */ @@ -284,6 +300,7 @@ clbss_l:str r2, [r0] /* clear loop... */ cmp r0, r1 bne clbss_l
+#ifndef CONFIG_SPL_BUILD bl coloured_LED_init bl red_led_on #endif diff --git a/doc/README.SPL b/doc/README.SPL index b460e84..89d24a7 100644 --- a/doc/README.SPL +++ b/doc/README.SPL @@ -64,3 +64,4 @@ CONFIG_SPL_POWER_SUPPORT (drivers/power/libpower.o) CONFIG_SPL_NAND_SUPPORT (drivers/mtd/nand/libnand.o) CONFIG_SPL_DMA_SUPPORT (drivers/dma/libdma.o) CONFIG_SPL_POST_MEM_SUPPORT (post/drivers/memory.o) +CONFIG_SPL_NAND_LOAD (drivers/mtd/nand/nand_spl_load.o) diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 1eeba5c..e80da62 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -30,6 +30,9 @@ ifdef CONFIG_SPL_BUILD ifdef CONFIG_SPL_NAND_SIMPLE COBJS-y += nand_spl_simple.o endif +ifdef CONFIG_SPL_NAND_LOAD +COBJS-y += nand_spl_load.o +endif else COBJS-y += nand.o COBJS-y += nand_bbt.o diff --git a/drivers/mtd/nand/nand_spl_load.c b/drivers/mtd/nand/nand_spl_load.c new file mode 100644 index 0000000..d7f6f10 --- /dev/null +++ b/drivers/mtd/nand/nand_spl_load.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2011 + * Heiko Schocher, DENX Software Engineering, hs@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 + */ + +#include <common.h> +#include <nand.h> + +/* + * 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 + * from NAND into SDRAM and starts it from there. + */ +void nand_boot(void) +{ + int ret; + __attribute__((noreturn)) void (*uboot)(void); + + /* + * Load U-Boot image from NAND into RAM + */ + ret = nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS, + CONFIG_SYS_NAND_U_BOOT_SIZE, + (void *)CONFIG_SYS_NAND_U_BOOT_DST); + +#ifdef CONFIG_NAND_ENV_DST + ret = nand_spl_load_image(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, + (void *)CONFIG_NAND_ENV_DST); + +#ifdef CONFIG_ENV_OFFSET_REDUND + ret = nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND, CONFIG_ENV_SIZE, + (void *)CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE); +#endif +#endif + + /* + * Jump to U-Boot image + */ + uboot = (void *)CONFIG_SYS_NAND_U_BOOT_START; + (*uboot)(); +}