From ab86f72c354f9b2572340f72b74ca0a258c451bd Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Fri, 17 Sep 2010 13:10:42 +0200 Subject: ARM: implement relocation for ARM926 Change the implementation for arm926 to relocate the code to an arbitrary address in RAM. Adapt the TX25 (i.MX25), magnesium board to test the changes. On the tx25 board TEXT_BASE is set to the final relocation address to prevent one more copying of u-boot code when relocating. More info see: doc/README.arm-relocation da850 board: Tested-by: Ben Gardiner Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher Cc: Ben Gardiner --- arch/arm/cpu/arm926ejs/orion5x/dram.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) (limited to 'arch/arm/cpu/arm926ejs/orion5x') diff --git a/arch/arm/cpu/arm926ejs/orion5x/dram.c b/arch/arm/cpu/arm926ejs/orion5x/dram.c index c719798..c5c8ab7 100644 --- a/arch/arm/cpu/arm926ejs/orion5x/dram.c +++ b/arch/arm/cpu/arm926ejs/orion5x/dram.c @@ -49,7 +49,7 @@ u32 orion5x_sdram_bar(enum memory_bank bank) result = winregs[bank].base; return result; } - +#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC) int dram_init(void) { int i; @@ -62,3 +62,25 @@ int dram_init(void) } return 0; } +#else +int dram_init (void) +{ + /* dram_init must store complete ramsize in gd->ram_size */ + gd->ram_size = get_ram_size( + (volatile long *) orion5x_sdram_bar(0), + CONFIG_MAX_RAM_BANK_SIZE); + return 0; +} + +void dram_init_banksize (void) +{ + int i; + + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { + gd->bd->bi_dram[i].start = orion5x_sdram_bar(i); + gd->bd->bi_dram[i].size = get_ram_size( + (volatile long *) (gd->bd->bi_dram[i].start), + CONFIG_MAX_RAM_BANK_SIZE); + } +} +#endif -- cgit v1.1