diff options
| author | Gabe Black <gabeblack@chromium.org> | 2012-11-03 11:41:30 +0000 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2012-12-06 14:30:42 -0800 |
| commit | b208c7f1d05c304e0dd27b7278ffb00e4af8e26e (patch) | |
| tree | 13a7921062205b802b4919634091297d5635d47d | |
| parent | 05b71646a93839ad6fb1073f5e25ead928c1717d (diff) | |
x86: Add support for CONFIG_OF_CONTROL
Allow a device tree to be provided through the standard mechanisms.
Signed-off-by: Gabe Black <gabeblack@google.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | arch/x86/lib/board.c | 7 | ||||
| -rw-r--r-- | arch/x86/lib/init_helpers.c | 29 |
2 files changed, 36 insertions, 0 deletions
diff --git a/arch/x86/lib/board.c b/arch/x86/lib/board.c index 2ffe0614dc9..22bc26dde90 100644 --- a/arch/x86/lib/board.c +++ b/arch/x86/lib/board.c @@ -99,10 +99,17 @@ typedef int (init_fnc_t) (void); init_fnc_t *init_sequence_f[] = { cpu_init_f, board_early_init_f, +#ifdef CONFIG_OF_CONTROL + find_fdt, + fdtdec_check_fdt, +#endif env_init, init_baudrate_f, serial_init, console_init_f, +#ifdef CONFIG_OF_CONTROL + prepare_fdt, +#endif dram_init_f, calculate_relocation_address, diff --git a/arch/x86/lib/init_helpers.c b/arch/x86/lib/init_helpers.c index 3a62b2ea06c..3eec9a61d66 100644 --- a/arch/x86/lib/init_helpers.c +++ b/arch/x86/lib/init_helpers.c @@ -171,3 +171,32 @@ int init_func_spi(void) puts("ready\n"); return 0; } + +#ifdef CONFIG_OF_CONTROL +int find_fdt(void) +{ +#ifdef CONFIG_OF_EMBED + /* Get a pointer to the FDT */ + gd->fdt_blob = _binary_dt_dtb_start; +#elif defined CONFIG_OF_SEPARATE + /* FDT is at end of image */ + gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE); +#endif + /* Allow the early environment to override the fdt address */ + gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, + (uintptr_t)gd->fdt_blob); + + return 0; +} + +int prepare_fdt(void) +{ + /* For now, put this check after the console is ready */ + if (fdtdec_prepare_fdt()) { + panic("** CONFIG_OF_CONTROL defined but no FDT - please see " + "doc/README.fdt-control"); + } + + return 0; +} +#endif |