如果要讓u-boot只在0x40000000（即memory port2） 運行，則需要修改的
地方有： （參考T34平臺u-boot中的修改爲0x30000000）
1. board\samsung\smdkc110\lowlevel_init.S
.set __base,0x200 ==>> .set __base,0x400
// 256MB for SDRAM with cacheable
.rept 0xD00 - 0xC00
FL_SECTION_ENTRY __base,3,0,1,1
.set __base,__base+1
.endr
2. board/samsung/smdkc110/smdkc110.c
ulong virt_to_phy_smdkc110(ulong addr)
{
if ((0xc0000000 <= addr) && (addr < 0xd0000000))
return (addr - 0xc0000000 + 0x20000000); //yan
else
printf("The input address don't need "\
"a virtual-to-physical translation : %08lx\n", addr);
return addr;
}
改爲：
ulong virt_to_phy_smdkc110(ulong addr)
{
if ((0xc0000000 <= addr) && (addr < 0xd0000000))
return (addr - 0xc0000000 + MEMORY_BASE_ADDRESS); //yan
else
printf("The input address don't need "\
"a virtual-to-physical translation : %08lx\n", addr);
return addr;
}
3. include\configs\smdkv210single.h
#define MEMORY_BASE_ADDRESS
0x40000000
#define DMC1_MEMCONFIG_0
0x40E01323
#define CONFIG_NR_DRAM_BANKS 1 /* we have 2 bank of DRAM */
#define SDRAM_BANK_SIZE 0x20000000 /* 512 MB */
//#define SDRAM_BANK_SIZE 0x10000000
#define PHYS_SDRAM_1 MEMORY_BASE_ADDRESS /* SDRAM Bank #1 */
#define PHYS_SDRAM_1_SIZE SDRAM_BANK_SIZE /* jeff */
//#define PHYS_SDRAM_2 0x40000000 /* SDRAM Bank #2 */
//#define PHYS_SDRAM_2_SIZE SDRAM_BANK_SIZE /* jeff */
#ifdef CONFIG_ENABLE_MMU
#define CFG_UBOOT_BASE 0xc3e00000
#else
#define CFG_UBOOT_BASE 0x43e00000
#endif
#define CONFIG_BOOTCOMMAND "movi read kernel C0008000; movi read rootfs 40B00000 180000; bootm C0008000 40B00000"
內核中的修改爲：
1. MACHINE_START(SMDKV210, "SMDKV210")
.boot_params = S5P_PA_SDRAM + 0x100,
arch/arm/mach-s5pv210/include/mach/map.h
#define S5P_PA_SDRAM S5PV210_PA_SDRAM
#define S5PV210_PA_SDRAM (0x40000000)
arch/arm/mach-s5pv210/include/mach/memory.h
#define PHYS_OFFSET UL(0x40000000)
arch/arm/mach-s5pv210/Makefile.boot
zreladdr-y := 0x40008000
params_phys-y := 0x40000100