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authorAaron Durbin <adurbin@chromium.org>2013-04-24 22:59:45 -0500
committerRonald G. Minnich <rminnich@gmail.com>2013-05-01 07:13:16 +0200
commit001de1aeb00e604e4664659b831ca99d1a940d57 (patch)
treef11f8c387d3af72346a74979211427fbb09bc277
parentbebf66909a11201a1bbfbdf7f1af40285d76a457 (diff)
downloadcoreboot-001de1aeb00e604e4664659b831ca99d1a940d57.tar.xz
boot state: rebalance payload load vs actual boot
The notion of loading a payload in the current boot state machine isn't actually loading the payload. The reason is that cbfs is just walked to find the payload. The actual loading and booting were occuring in selfboot(). Change this balance so that loading occurs in one function and actual booting happens in another. This allows for ample opportunity to delay work until just before booting. Change-Id: Ic91ed6050fc5d8bb90c8c33a44eea3b1ec84e32d Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/3139 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
-rw-r--r--src/include/cbfs.h3
-rw-r--r--src/lib/hardwaremain.c12
-rw-r--r--src/lib/selfboot.c18
3 files changed, 22 insertions, 11 deletions
diff --git a/src/include/cbfs.h b/src/include/cbfs.h
index ac249aabf5..c0098eacdb 100644
--- a/src/include/cbfs.h
+++ b/src/include/cbfs.h
@@ -78,7 +78,8 @@ int run_address(void *f);
/* Defined in src/lib/selfboot.c */
struct lb_memory;
-int selfboot(struct lb_memory *mem, struct cbfs_payload *payload);
+void *selfload(struct lb_memory *mem, struct cbfs_payload *payload);
+void selfboot(void *entry);
/* Defined in individual arch / board implementation. */
int init_default_cbfs_media(struct cbfs_media *media);
diff --git a/src/lib/hardwaremain.c b/src/lib/hardwaremain.c
index adee3ca709..ed2a516372 100644
--- a/src/lib/hardwaremain.c
+++ b/src/lib/hardwaremain.c
@@ -198,6 +198,7 @@ static boot_state_t bs_write_tables(void *arg)
static boot_state_t bs_payload_load(void *arg)
{
void *payload;
+ void *entry;
timestamp_add_now(TS_LOAD_PAYLOAD);
@@ -206,15 +207,20 @@ static boot_state_t bs_payload_load(void *arg)
if (! payload)
die("Could not find a payload\n");
+ entry = selfload(get_lb_mem(), payload);
+
+ if (! entry)
+ die("Could not load payload\n");
+
/* Pass the payload to the next state. */
- boot_states[BS_PAYLOAD_BOOT].arg = payload;
+ boot_states[BS_PAYLOAD_BOOT].arg = entry;
return BS_PAYLOAD_BOOT;
}
-static boot_state_t bs_payload_boot(void *payload)
+static boot_state_t bs_payload_boot(void *entry)
{
- selfboot(get_lb_mem(), payload);
+ selfboot(entry);
printk(BIOS_EMERG, "Boot failed");
/* Returning from this state will fail because the following signals
diff --git a/src/lib/selfboot.c b/src/lib/selfboot.c
index 324d43e838..4ebe10935d 100644
--- a/src/lib/selfboot.c
+++ b/src/lib/selfboot.c
@@ -512,7 +512,7 @@ static int load_self_segments(
return 1;
}
-int selfboot(struct lb_memory *mem, struct cbfs_payload *payload)
+void *selfload(struct lb_memory *mem, struct cbfs_payload *payload)
{
u32 entry=0;
struct segment head;
@@ -527,10 +527,18 @@ int selfboot(struct lb_memory *mem, struct cbfs_payload *payload)
printk(BIOS_SPEW, "Loaded segments\n");
+ return (void *)entry;
+
+out:
+ return NULL;
+}
+
+void selfboot(void *entry)
+{
/* Reset to booting from this image as late as possible */
boot_successful();
- printk(BIOS_DEBUG, "Jumping to boot code at %x\n", entry);
+ printk(BIOS_DEBUG, "Jumping to boot code at %p\n", entry);
post_code(POST_ENTER_ELF_BOOT);
#if CONFIG_COLLECT_TIMESTAMPS
@@ -543,9 +551,5 @@ int selfboot(struct lb_memory *mem, struct cbfs_payload *payload)
checkstack(_estack, 0);
/* Jump to kernel */
- jmp_to_elf_entry((void*)entry, bounce_buffer, bounce_size);
- return 1;
-
-out:
- return 0;
+ jmp_to_elf_entry(entry, bounce_buffer, bounce_size);
}