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Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/Kconfig11
-rw-r--r--arch/mips/lib/bootm.c38
2 files changed, 47 insertions, 2 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 9b3ecea..363f5ac 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -136,6 +136,17 @@ config MIPS_BOOT_ENV_LEGACY
address and size will be prepared as zero-terminated key/value list.
The address of the enviroment is stored in register $a2.
+config MIPS_BOOT_FDT
+ bool "Hand over a flattened device tree to Linux kernel (INCOMPLETE)"
+ default n
+ help
+ Enable this option if you want U-Boot to hand over a flattened
+ device tree to the kernel.
+
+ Note: the final hand over to the kernel is not yet implemented. After
+ the community agreed on the MIPS boot interface for device trees,
+ the corresponding code will be added.
+
endmenu
config SUPPORTS_BIG_ENDIAN
diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c
index 7a98f15..426f68a 100644
--- a/arch/mips/lib/bootm.c
+++ b/arch/mips/lib/bootm.c
@@ -7,6 +7,7 @@
#include <common.h>
#include <image.h>
+#include <fdt_support.h>
#include <asm/addrspace.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -72,9 +73,39 @@ static int boot_setup_linux(bootm_headers_t *images)
if (ret)
return ret;
+#if defined(CONFIG_MIPS_BOOT_FDT) && defined(CONFIG_OF_LIBFDT)
+ if (images->ft_len) {
+ boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
+
+ ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
+ &images->ft_len);
+ if (ret)
+ return ret;
+ }
+#endif
+
return 0;
}
+static void boot_setup_fdt(bootm_headers_t *images)
+{
+#if defined(CONFIG_MIPS_BOOT_FDT) && defined(CONFIG_OF_LIBFDT)
+ u64 mem_start = 0;
+ u64 mem_size = gd->ram_size;
+
+ debug("## setup FDT\n");
+
+ fdt_chosen(images->ft_addr, 1);
+ fdt_fixup_memory_banks(images->ft_addr, &mem_start, &mem_size, 1);
+ fdt_fixup_ethernet(images->ft_addr);
+ fdt_initrd(images->ft_addr, images->initrd_start, images->initrd_end, 1);
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+ ft_board_setup(images->ft_addr, gd->bd);
+#endif
+#endif
+}
+
static void linux_cmdline_init(void)
{
linux_argc = 1;
@@ -168,7 +199,7 @@ static void linux_cmdline_append(bootm_headers_t *images)
static void boot_cmdline_linux(bootm_headers_t *images)
{
- if (mips_boot_cmdline_legacy) {
+ if (mips_boot_cmdline_legacy && !images->ft_len) {
linux_cmdline_legacy(images);
if (!mips_boot_env_legacy)
@@ -259,8 +290,11 @@ static void linux_env_legacy(bootm_headers_t *images)
static void boot_prep_linux(bootm_headers_t *images)
{
- if (mips_boot_env_legacy)
+ if (mips_boot_env_legacy && !images->ft_len)
linux_env_legacy(images);
+
+ if (images->ft_len)
+ boot_setup_fdt(images);
}
static void boot_jump_linux(bootm_headers_t *images)