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sunxi: board.c: refactor SPL header checks

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So far we have two users which want to look at the SPL header. We will
get more in the future.
Refactor the existing SPL header checks into a common function, to
simplify reusing the code.
Now that this is easy, add proper version checks to the DT name parsing.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
This commit is contained in:
Andre Przywara 2018-10-25 17:23:04 +08:00 committed by Jagan Teki
parent 55d481d201
commit cff5c13849
1 changed files with 30 additions and 11 deletions
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41
board/sunxi/board.c
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@ -255,6 +255,30 @@ int board_init(void)
return soft_i2c_board_init(); return soft_i2c_board_init();
} }
/*
* On older SoCs the SPL is actually at address zero, so using NULL as
* an error value does not work.
*/
#define INVALID_SPL_HEADER ((void *)~0UL)
static struct boot_file_head * get_spl_header(uint8_t req_version)
{
struct boot_file_head *spl = (void *)(ulong)SPL_ADDR;
uint8_t spl_header_version = spl->spl_signature[3];
/* Is there really the SPL header (still) there? */
if (memcmp(spl->spl_signature, SPL_SIGNATURE, 3) != 0)
return INVALID_SPL_HEADER;
if (spl_header_version < req_version) {
printf("sunxi SPL version mismatch: expected %u, got %u\n",
req_version, spl_header_version);
return INVALID_SPL_HEADER;
}
return spl;
}
int dram_init(void) int dram_init(void)
{ {
gd->ram_size = get_ram_size((long *)PHYS_SDRAM_0, PHYS_SDRAM_0_SIZE); gd->ram_size = get_ram_size((long *)PHYS_SDRAM_0, PHYS_SDRAM_0_SIZE);
@ -662,16 +686,11 @@ void get_board_serial(struct tag_serialnr *serialnr)
*/ */
static void parse_spl_header(const uint32_t spl_addr) static void parse_spl_header(const uint32_t spl_addr)
{ {
struct boot_file_head *spl = (void *)(ulong)spl_addr; struct boot_file_head *spl = get_spl_header(SPL_ENV_HEADER_VERSION);
if (memcmp(spl->spl_signature, SPL_SIGNATURE, 3) != 0)
return; /* signature mismatch, no usable header */
uint8_t spl_header_version = spl->spl_signature[3]; if (spl == INVALID_SPL_HEADER)
if (spl_header_version < SPL_ENV_HEADER_VERSION) {
printf("sunxi SPL version mismatch: expected %u, got %u\n",
SPL_ENV_HEADER_VERSION, spl_header_version);
return; return;
}
if (!spl->fel_script_address) if (!spl->fel_script_address)
return; return;
@ -806,11 +825,11 @@ int ft_board_setup(void *blob, bd_t *bd)
#ifdef CONFIG_SPL_LOAD_FIT #ifdef CONFIG_SPL_LOAD_FIT
int board_fit_config_name_match(const char *name) int board_fit_config_name_match(const char *name)
{ {
struct boot_file_head *spl = (void *)(ulong)SPL_ADDR; struct boot_file_head *spl = get_spl_header(SPL_DT_HEADER_VERSION);
const char *cmp_str = (void *)(ulong)SPL_ADDR; const char *cmp_str = (const char *)spl;
/* Check if there is a DT name stored in the SPL header and use that. */ /* Check if there is a DT name stored in the SPL header and use that. */
if (spl->dt_name_offset) { if (spl != INVALID_SPL_HEADER && spl->dt_name_offset) {
cmp_str += spl->dt_name_offset; cmp_str += spl->dt_name_offset;
} else { } else {
#ifdef CONFIG_DEFAULT_DEVICE_TREE #ifdef CONFIG_DEFAULT_DEVICE_TREE