Djam/u-boot
1
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2025-05-09 03:21:51 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

MIPS: bootm: prepare a flattened device tree for the kernel

Browse source 
Add the initial code to prepare a flattened device tree for
the kernel like relocating the FDT blob and fixing up the
/chosen and /memory nodes.

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.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This commit is contained in:
Daniel Schwierzeck 2015-01-14 21:44:13 +01:00
parent 8cec725ad5
commit 5002d8cc54
2 changed files with 47 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

38
arch/mips/lib/bootm.c
View file

@ -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)