[U-Boot] [PATCH 2/3] MIPS: bootm: rework and fix broken bootm code
Daniel Schwierzeck
daniel.schwierzeck at gmail.com
Sun Nov 1 17:36:14 CET 2015
The move to 'generic board' as well as changes in the generic
bootm code broke the boot of FIT uImage's. Especially uImage's
with additional initramfs images or FDT's do not work anymore.
Refactor the bootm code to work again with the generic bootm code.
Always relocate ramdisk and FDT in step 'bootm prep' because the
generic bootm code does this only for legacy uImage's.
Move the step 'bootm cmdline' to 'bootm prep' because the Linux
kernel parameters rd_start and rd_size have to be initialized after
the relocation of the ramdisk.
Furthermore support the step 'bootm fake'.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck at gmail.com>
---
arch/mips/lib/bootm.c | 163 ++++++++++++++++++++++++--------------------------
1 file changed, 78 insertions(+), 85 deletions(-)
diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c
index 9c647aa..a7eddd3 100644
--- a/arch/mips/lib/bootm.c
+++ b/arch/mips/lib/bootm.c
@@ -21,18 +21,6 @@ DECLARE_GLOBAL_DATA_PTR;
#define mips_boot_malta 0
#endif
-#if defined(CONFIG_MIPS_BOOT_CMDLINE_LEGACY)
-#define mips_boot_cmdline_legacy 1
-#else
-#define mips_boot_cmdline_legacy 0
-#endif
-
-#if defined(CONFIG_MIPS_BOOT_ENV_LEGACY)
-#define mips_boot_env_legacy 1
-#else
-#define mips_boot_env_legacy 0
-#endif
-
static int linux_argc;
static char **linux_argv;
static char *linux_argp;
@@ -62,50 +50,6 @@ void arch_lmb_reserve(struct lmb *lmb)
lmb_reserve(lmb, sp, CONFIG_SYS_SDRAM_BASE + gd->ram_size - sp);
}
-static int boot_setup_linux(bootm_headers_t *images)
-{
- int ret;
- ulong rd_len;
-
- rd_len = images->rd_end - images->rd_start;
- ret = boot_ramdisk_high(&images->lmb, images->rd_start,
- rd_len, &images->initrd_start, &images->initrd_end);
- 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);
- 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);
-
-#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;
@@ -197,18 +141,6 @@ static void linux_cmdline_append(bootm_headers_t *images)
}
}
-static void boot_cmdline_linux(bootm_headers_t *images)
-{
- if (mips_boot_cmdline_legacy && !images->ft_len) {
- linux_cmdline_legacy(images);
-
- if (!mips_boot_env_legacy)
- linux_cmdline_append(images);
-
- linux_cmdline_dump();
- }
-}
-
static void linux_env_init(void)
{
linux_env = (char **)(((ulong) linux_argp + 15) & ~15);
@@ -288,13 +220,81 @@ static void linux_env_legacy(bootm_headers_t *images)
}
}
+static int boot_reloc_ramdisk(bootm_headers_t *images)
+{
+ ulong rd_len = images->rd_end - images->rd_start;
+
+ /*
+ * In case of legacy uImage's, relocation of ramdisk is already done
+ * by do_bootm_states() and should not repeated in 'bootm prep'.
+ */
+ if (images->state & BOOTM_STATE_RAMDISK) {
+ debug("## Ramdisk already relocated\n");
+ return 0;
+ }
+
+ return boot_ramdisk_high(&images->lmb, images->rd_start,
+ rd_len, &images->initrd_start, &images->initrd_end);
+}
+
+static int boot_reloc_fdt(bootm_headers_t *images)
+{
+ /*
+ * In case of legacy uImage's, relocation of FDT is already done
+ * by do_bootm_states() and should not repeated in 'bootm prep'.
+ */
+ if (images->state & BOOTM_STATE_FDT) {
+ debug("## FDT already relocated\n");
+ return 0;
+ }
+
+#if CONFIG_IS_ENABLED(MIPS_BOOT_FDT) && CONFIG_IS_ENABLED(OF_LIBFDT)
+ boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
+ return boot_relocate_fdt(&images->lmb, &images->ft_addr,
+ &images->ft_len);
+#else
+ return 0;
+#endif
+}
+
+int arch_fixup_memory_node(void *blob)
+{
+#if CONFIG_IS_ENABLED(MIPS_BOOT_FDT) && CONFIG_IS_ENABLED(OF_LIBFDT)
+ u64 mem_start = 0;
+ u64 mem_size = gd->ram_size;
+
+ return fdt_fixup_memory_banks(blob, &mem_start, &mem_size, 1);
+#else
+ return 0;
+#endif
+}
+
+static int boot_setup_fdt(bootm_headers_t *images)
+{
+ return image_setup_libfdt(images, images->ft_addr, images->ft_len,
+ &images->lmb);
+}
+
static void boot_prep_linux(bootm_headers_t *images)
{
- if (mips_boot_env_legacy && !images->ft_len)
- linux_env_legacy(images);
+ boot_reloc_ramdisk(images);
- if (images->ft_len)
+ if (CONFIG_IS_ENABLED(MIPS_BOOT_FDT) && images->ft_len) {
+ boot_reloc_fdt(images);
boot_setup_fdt(images);
+ } else {
+ if (CONFIG_IS_ENABLED(CONFIG_MIPS_BOOT_ENV_LEGACY))
+ linux_env_legacy(images);
+
+ if (CONFIG_IS_ENABLED(MIPS_BOOT_CMDLINE_LEGACY)) {
+ linux_cmdline_legacy(images);
+
+ if (!CONFIG_IS_ENABLED(CONFIG_MIPS_BOOT_ENV_LEGACY))
+ linux_cmdline_append(images);
+
+ linux_cmdline_dump();
+ }
+ }
}
static void boot_jump_linux(bootm_headers_t *images)
@@ -327,35 +327,28 @@ static void boot_jump_linux(bootm_headers_t *images)
int do_bootm_linux(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
- int ret;
-
/* No need for those on MIPS */
if (flag & BOOTM_STATE_OS_BD_T)
return -1;
- if (flag & BOOTM_STATE_OS_CMDLINE) {
- boot_cmdline_linux(images);
+ /*
+ * Cmdline init has been moved to 'bootm prep' because it has to be
+ * done after relocation of ramdisk to always pass correct values
+ * for rd_start and rd_size to Linux kernel.
+ */
+ if (flag & BOOTM_STATE_OS_CMDLINE)
return 0;
- }
if (flag & BOOTM_STATE_OS_PREP) {
boot_prep_linux(images);
return 0;
}
- if (flag & BOOTM_STATE_OS_GO) {
+ if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
boot_jump_linux(images);
return 0;
}
- ret = boot_setup_linux(images);
- if (ret)
- return ret;
-
- boot_cmdline_linux(images);
- boot_prep_linux(images);
- boot_jump_linux(images);
-
/* does not return */
return 1;
}
--
2.5.0
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