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[Reloc patcher] Use structs and name more consts

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This commit is contained in:
Kostas Missos 2019-03-08 00:23:19 +02:00
parent e7f72b711a
commit b1110caed1
1 changed files with 20 additions and 27 deletions
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39
bootloader/main.c
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@ -218,42 +218,34 @@ void check_power_off_from_hos()
}
// This is a safe and unused DRAM region for our payloads.
// IPL_LOAD_ADDR is defined in makefile.
#define EXT_PAYLOAD_ADDR 0xC03C0000
#define RELOC_META_OFF 0x7C
#define PATCHED_RELOC_SZ 0x94
#define PATCHED_RELOC_STACK 0x40007000
#define PATCHED_RELOC_ENTRY 0x40010000
#define EXT_PAYLOAD_ADDR 0xC03C0000
#define RCM_PAYLOAD_ADDR (EXT_PAYLOAD_ADDR + ALIGN(PATCHED_RELOC_SZ, 0x10))
#define PAYLOAD_ENTRY 0x40010000
#define CBFS_SDRAM_EN_ADDR 0x4003e000
#define COREBOOT_ADDR (0xD0000000 - 0x100000)
void (*ext_payload_ptr)() = (void *)EXT_PAYLOAD_ADDR;
void (*update_ptr)() = (void *)RCM_PAYLOAD_ADDR;
#define CBFS_DRAM_EN_ADDR 0x4003e000
#define CBFS_DRAM_MAGIC 0x4452414D // "DRAM"
void reloc_patcher(u32 payload_dst, u32 payload_src, u32 payload_size)
{
static const u32 START_OFF = 0x7C;
static const u32 STACK_OFF = 0x80;
static const u32 PAYLOAD_END_OFF = 0x84;
static const u32 IPL_START_OFF = 0x88;
memcpy((u8 *)payload_src, (u8 *)IPL_LOAD_ADDR, PATCHED_RELOC_SZ);
*(vu32 *)(payload_src + START_OFF) = payload_dst - ALIGN(PATCHED_RELOC_SZ, 0x10);
*(vu32 *)(payload_src + PAYLOAD_END_OFF) = payload_dst + payload_size;
*(vu32 *)(payload_src + STACK_OFF) = 0x40008000;
*(vu32 *)(payload_src + IPL_START_OFF) = payload_dst;
volatile reloc_meta_t *relocator = (reloc_meta_t *)(payload_src + RELOC_META_OFF);
relocator->start = payload_dst - ALIGN(PATCHED_RELOC_SZ, 0x10);
relocator->stack = PATCHED_RELOC_STACK;
relocator->end = payload_dst + payload_size;
relocator->ep = payload_dst;
if (payload_size == 0x7000)
{
memcpy((u8 *)(payload_src + ALIGN(PATCHED_RELOC_SZ, 0x10)), (u8 *)COREBOOT_ADDR, 0x7000); //Bootblock
*(vu32 *)CBFS_SDRAM_EN_ADDR = 0x4452414D;
*(vu32 *)CBFS_DRAM_EN_ADDR = CBFS_DRAM_MAGIC;
}
}
#define BOOTLOADER_UPDATED_MAGIC 0x424F4F54 // "BOOT".
#define BOOTLOADER_UPDATED_MAGIC_ADDR 0x4003E000
bool is_ipl_updated(void *buf)
{
ipl_ver_meta_t *update_ft = (ipl_ver_meta_t *)(buf + PATCHED_RELOC_SZ + sizeof(boot_cfg_t));
@ -324,12 +316,13 @@ int launch_payload(char *path, bool update)
}
else
{
reloc_patcher(PAYLOAD_ENTRY, EXT_PAYLOAD_ADDR, 0x7000);
if (*(vu32 *)CBFS_SDRAM_EN_ADDR != 0x4452414D)
return 1;
reloc_patcher(PATCHED_RELOC_ENTRY, EXT_PAYLOAD_ADDR, 0x7000);
reconfig_hw_workaround(true, 0);
}
void (*ext_payload_ptr)() = (void *)EXT_PAYLOAD_ADDR;
void (*update_ptr)() = (void *)RCM_PAYLOAD_ADDR;
// Launch our payload.
if (!update)
(*ext_payload_ptr)();