From: Gabe Black <gabebl...@chromium.org>
Allow a device tree to be provided through the standard mechanisms.
Signed-off-by: Gabe Black <gabebl...@google.com>
Signed-off-by: Simon Glass <s...@chromium.org>
---
arch/x86/lib/board.c | 7 +++++++
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 e0c5419..3093ea5 100644
--- a/arch/x86/lib/board.c
+++ b/arch/x86/lib/board.c
@@ -98,10 +98,17 @@ 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 fc28af7..4a94d96 100644
--- a/arch/x86/lib/init_helpers.c
+++ b/arch/x86/lib/init_helpers.c
@@ -205,3 +205,32 @@ 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
--
1.7.7.3
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