Enable user selectable bootblocks, and provide a bootblock that

selects between "fallback" and "normal", in addition to the
already present "fallback"-only bootblock.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5157 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

3 files changed, 44 insertions, 47 deletions

diff --git a/src/arch/i386/init/bootblock.c b/src/arch/i386/init/bootblock.c
deleted file mode 100644
index 86a5c5b136..0000000000
--- a/src/arch/i386/init/bootblock.c
+++ /dev/null
@@ -1,47 +0,0 @@
-#define __PRE_RAM__
-#if CONFIG_LOGICAL_CPUS && \
- (defined(CONFIG_BOOTBLOCK_NORTHBRIDGE_INIT) || defined(CONFIG_BOOTBLOCK_SOUTHBRIDGE_INIT))
-#include <cpu/x86/lapic/boot_cpu.c>
-#else
-#define boot_cpu(x) 1
-#endif
-
-#ifdef CONFIG_BOOTBLOCK_NORTHBRIDGE_INIT
-#include CONFIG_BOOTBLOCK_NORTHBRIDGE_INIT
-#else
-static void bootblock_northbridge_init(void) { }
-#endif
-#ifdef CONFIG_BOOTBLOCK_SOUTHBRIDGE_INIT
-#include CONFIG_BOOTBLOCK_SOUTHBRIDGE_INIT
-#else
-static void bootblock_southbridge_init(void) { }
-#endif
-
-static unsigned long findstage(char* target)
-{
-	unsigned long entry;
-	asm volatile (
-		"mov $1f, %%esp\n\t"
-		"jmp walkcbfs\n\t"
-		"1:\n\t" : "=a" (entry) : "S" (target) : "ebx", "ecx", "edi", "esp");
-	return entry;
-}
-
-static void call(unsigned long addr, unsigned long bist)
-{
-	asm volatile ("jmp *%0\n\t" : : "r" (addr), "a" (bist));
-}
-
-static void main(unsigned long bist)
-{
-	if (boot_cpu()) {
-		bootblock_northbridge_init();
-		bootblock_southbridge_init();
-	}
-	const char* target1 = "fallback/romstage";
-	unsigned long entry;
-	entry = findstage(target1);
-	if (entry) call(entry, bist);
-	asm volatile ("1:\n\thlt\n\tjmp 1b\n\t");
-}
-
diff --git a/src/arch/i386/init/bootblock_normal.c b/src/arch/i386/init/bootblock_normal.c
new file mode 100644
index 0000000000..0e5bd25556
--- /dev/null
+++ b/src/arch/i386/init/bootblock_normal.c
@@ -0,0 +1,29 @@
+#include <bootblock_common.h>
+
+#include <arch/io.h>
+#include "arch/romcc_io.h"
+#include "pc80/mc146818rtc_early.c"
+
+static void main(unsigned long bist)
+{
+	if (boot_cpu()) {
+		bootblock_northbridge_init();
+		bootblock_southbridge_init();
+	}
+
+	unsigned long entry;
+	if (do_normal_boot())
+		entry = findstage("normal/romstage");
+	else
+		entry = findstage("fallback/romstage");
+
+	if (entry) call(entry, bist);
+
+	/* run fallback if normal can't be found */
+	entry = findstage("fallback/romstage");
+	if (entry) call(entry, bist);
+
+	/* duh. we're stuck */
+	asm volatile ("1:\n\thlt\n\tjmp 1b\n\t");
+}
+
diff --git a/src/arch/i386/init/bootblock_simple.c b/src/arch/i386/init/bootblock_simple.c
new file mode 100644
index 0000000000..e8994ee092
--- /dev/null
+++ b/src/arch/i386/init/bootblock_simple.c
@@ -0,0 +1,15 @@
+#include <bootblock_common.h>
+
+static void main(unsigned long bist)
+{
+	if (boot_cpu()) {
+		bootblock_northbridge_init();
+		bootblock_southbridge_init();
+	}
+	const char* target1 = "fallback/romstage";
+	unsigned long entry;
+	entry = findstage(target1);
+	if (entry) call(entry, bist);
+	asm volatile ("1:\n\thlt\n\tjmp 1b\n\t");
+}
+