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| author | Bernhard Nortmann <bernhard.nortmann@web.de> | 2015-09-17 18:52:52 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-09-29 11:50:07 +0200 |
| commit | af654d14613f22f4910601d86e584030ee392b94 (patch) | |
| tree | d9b47fb1b20ce0f5364cac399729983f4f3d1462 /board/sunxi | |
| parent | a188438175bd5fb4ef0440c9fdd0ded8b5640b3d (diff) | |
| download | u-boot-af654d14613f22f4910601d86e584030ee392b94.tar.gz | |
sunxi: retrieve FEL-provided values to environment variables
This patch extends the misc_init_r() function on sunxi boards
to test for the presence of a suitable "sunxi" SPL header. If
found, and the loader ("fel" utility) provided a non-zero value
for the boot.scr address, then the corresponding environment
variable fel_scriptaddr gets set.
misc_init_r() also sets (or clears) the "fel_booted" variable depending
on the active boot device, using the same logic as spl_boot_device().
The goal is to provide sufficient information (within the U-Boot
environment) to make intelligent decisions on how to continue the boot
process, allowing specific customizations for the "FEL boot" case.
Signed-off-by: Bernhard Nortmann <bernhard.nortmann@web.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'board/sunxi')
| -rw-r--r-- | board/sunxi/board.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/board/sunxi/board.c b/board/sunxi/board.c index 9c855f604d..096d12791c 100644 --- a/board/sunxi/board.c +++ b/board/sunxi/board.c @@ -516,6 +516,31 @@ void get_board_serial(struct tag_serialnr *serialnr) } #endif +#if !defined(CONFIG_SPL_BUILD) +#include <asm/arch/spl.h> + +/* + * Check the SPL header for the "sunxi" variant. If found: parse values + * that might have been passed by the loader ("fel" utility), and update + * the environment accordingly. + */ +static void parse_spl_header(const uint32_t spl_addr) +{ + struct boot_file_head *spl = (void *)spl_addr; + if (memcmp(spl->spl_signature, SPL_SIGNATURE, 3) == 0) { + uint8_t spl_header_version = spl->spl_signature[3]; + if (spl_header_version == SPL_HEADER_VERSION) { + if (spl->fel_script_address) + setenv_hex("fel_scriptaddr", + spl->fel_script_address); + return; + } + printf("sunxi SPL version mismatch: expected %u, got %u\n", + SPL_HEADER_VERSION, spl_header_version); + } +} +#endif + #ifdef CONFIG_MISC_INIT_R int misc_init_r(void) { @@ -524,6 +549,16 @@ int misc_init_r(void) uint8_t mac_addr[6]; int ret; +#if !defined(CONFIG_SPL_BUILD) + setenv("fel_booted", NULL); + setenv("fel_scriptaddr", NULL); + /* determine if we are running in FEL mode */ + if (!is_boot0_magic(SPL_ADDR + 4)) { /* eGON.BT0 */ + setenv("fel_booted", "1"); + parse_spl_header(SPL_ADDR); + } +#endif + ret = sunxi_get_sid(sid); if (ret == 0 && sid[0] != 0 && sid[3] != 0) { if (!getenv("ethaddr")) { |