Move coreboot_ram and coreboot_apc to CBFS. This allows to

reduce the size of the bootblock (done for kontron/986lcd-m)

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4315 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

6 files changed, 196 insertions, 11 deletions

diff --git a/src/arch/i386/Config.lb b/src/arch/i386/Config.lb
index 5f09066..68b4310 100644
--- a/src/arch/i386/Config.lb
+++ b/src/arch/i386/Config.lb
@@ -1,3 +1,4 @@
+uses CONFIG_CBFS
 uses CONFIG_SMP
 uses CONFIG_PRECOMPRESSED_PAYLOAD
 uses CONFIG_USE_INIT
@@ -7,18 +8,39 @@ uses USE_FALLBACK_IMAGE
 
 init init/crt0.S.lb
 
+if CONFIG_CBFS
+	if USE_FAILOVER_IMAGE
+	else
+		initobject /src/lib/cbfs.o
+		initobject /src/console/vsprintf.o
+		initobject /src/lib/lzma.o
+	end
+end
+
 if HAVE_FAILOVER_BOOT
-      if USE_FAILOVER_IMAGE
-              ldscript init/ldscript_failover.lb
-      else
-              ldscript init/ldscript.lb
-      end
+	if USE_FAILOVER_IMAGE
+		ldscript init/ldscript_failover.lb
+	else
+		if CONFIG_CBFS
+			ldscript init/ldscript_cbfs.lb
+		else
+			ldscript init/ldscript.lb
+		end
+	end
 else
-      if USE_FALLBACK_IMAGE
-              ldscript init/ldscript_fallback.lb
-      else
-              ldscript init/ldscript.lb
-      end
+	if CONFIG_CBFS
+		if USE_FALLBACK_IMAGE
+			ldscript init/ldscript_fallback_cbfs.lb
+		else
+			ldscript init/ldscript_cbfs.lb
+		end
+	else
+		if USE_FALLBACK_IMAGE
+			ldscript init/ldscript_fallback.lb
+		else
+			ldscript init/ldscript.lb
+		end
+	end
 end
 
 makerule all
diff --git a/src/arch/i386/init/crt0.S.lb b/src/arch/i386/init/crt0.S.lb
index c54e705..dd51899 100644
--- a/src/arch/i386/init/crt0.S.lb
+++ b/src/arch/i386/init/crt0.S.lb
@@ -73,6 +73,10 @@ __main:
 	movl	$0x4000000, %esp
 	movl	%esp, %ebp
 	pushl %esi
+#ifdef CONFIG_CBFS
+	pushl $str_coreboot_ram_name
+	call cbfs_and_run_core
+#else
 	movl	$_liseg, %esi
 	movl	$_iseg,  %edi
 	movl	$_eiseg, %ecx
@@ -81,6 +85,7 @@ __main:
 	pushl %edi
 	pushl %esi
 	call copy_and_run_core
+#endif
 
 .Lhlt:	
 	intel_chip_post_macro(0xee)	/* post fe */
@@ -137,6 +142,13 @@ str_copying_to_ram:  .string "Uncompressing coreboot to RAM.\r\n"
 #else
 str_copying_to_ram:  .string "Copying coreboot to RAM.\r\n"
 #endif
+#if CONFIG_CBFS
+# if USE_FALLBACK_IMAGE == 1
+str_coreboot_ram_name:	.string "fallback/coreboot_ram"
+# else
+str_coreboot_ram_name:	.string "normal/coreboot_ram"
+# endif
+#endif
 str_pre_main:        .string "Jumping to coreboot.\r\n"
 .previous
 
diff --git a/src/arch/i386/init/ldscript_cbfs.lb b/src/arch/i386/init/ldscript_cbfs.lb
new file mode 100644
index 0000000..e86befb
--- /dev/null
+++ b/src/arch/i386/init/ldscript_cbfs.lb
@@ -0,0 +1,59 @@
+/*
+ *	Memory map:
+ *
+ *	_RAMBASE		
+ *				: data segment
+ *				: bss segment
+ *				: heap
+ *				: stack
+ *	_ROMBASE
+ *				: coreboot text 
+ *				: readonly text
+ */
+/*
+ * Bootstrap code for the STPC Consumer
+ * Copyright (c) 1999 by Net Insight AB. All Rights Reserved.
+ *
+ */
+
+/*
+ *	Written by Johan Rydberg, based on work by Daniel Kahlin.
+ *      Rewritten by Eric Biederman
+ */
+/*
+ *	We use ELF as output format. So that we can
+ *	debug the code in some form. 
+ */
+OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+
+/*
+ENTRY(_start)
+*/
+
+TARGET(binary)
+SECTIONS
+{
+	. = _ROMBASE;
+
+	/* This section might be better named .setup */
+	.rom . : {
+		_rom = .;
+		*(.rom.text);
+		*(.rom.data);
+		*(.rodata.*);
+		*(.rom.data.*);
+		. = ALIGN(16);
+		_erom = .;
+	}
+
+	_lrom = LOADADDR(.rom);
+	_elrom = LOADADDR(.rom) + SIZEOF(.rom);
+
+	/DISCARD/ : {
+		*(.comment)
+		*(.comment.*)
+		*(.note)
+		*(.note.*)
+	}
+}
diff --git a/src/arch/i386/init/ldscript_fallback_cbfs.lb b/src/arch/i386/init/ldscript_fallback_cbfs.lb
new file mode 100644
index 0000000..d1b56ce
--- /dev/null
+++ b/src/arch/i386/init/ldscript_fallback_cbfs.lb
@@ -0,0 +1,64 @@
+/*
+ *	Memory map:
+ *
+ *	_RAMBASE		
+ *				: data segment
+ *				: bss segment
+ *				: heap
+ *				: stack
+ *	_ROMBASE
+ *				: coreboot text 
+ *				: readonly text
+ */
+/*
+ * Bootstrap code for the STPC Consumer
+ * Copyright (c) 1999 by Net Insight AB. All Rights Reserved.
+ *
+ */
+
+/*
+ *	Written by Johan Rydberg, based on work by Daniel Kahlin.
+ *      Rewritten by Eric Biederman
+ */
+/*
+ *	We use ELF as output format. So that we can
+ *	debug the code in some form. 
+ */
+OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+
+/*
+ENTRY(_start)
+*/
+
+TARGET(binary)
+SECTIONS
+{
+	. = _ROMBASE;
+
+	/* cut _start into last 64k*/
+	_x = .;
+	. = (_x < (_ROMBASE - 0x10000 +  ROM_IMAGE_SIZE)) ? (_ROMBASE - 0x10000 +  ROM_IMAGE_SIZE) : _x;
+
+	/* This section might be better named .setup */
+	.rom . : {
+		_rom = .;
+		*(.rom.text);
+		*(.rom.data);
+		*(.init.rodata.*);
+		*(.rodata.*);
+		*(.rom.data.*);
+		. = ALIGN(16);
+		_erom = .;
+	}
+
+	_lrom = LOADADDR(.rom);
+	_elrom = LOADADDR(.rom) + SIZEOF(.rom);
+
+	/DISCARD/ : {
+		*(.comment)
+		*(.note)
+		*(.comment.*)
+		*(.note.*)
+	}
+}
diff --git a/src/arch/i386/lib/Config.lb b/src/arch/i386/lib/Config.lb
index 3356b8f..52da9d5 100644
--- a/src/arch/i386/lib/Config.lb
+++ b/src/arch/i386/lib/Config.lb
@@ -1,6 +1,7 @@
 uses CONFIG_USE_INIT
 uses CONFIG_USE_PRINTK_IN_CAR
 uses USE_FAILOVER_IMAGE
+uses CONFIG_CBFS
 
 object c_start.S
 object cpu.c
@@ -14,5 +15,9 @@ initobject printk_init.o
 
 if USE_FAILOVER_IMAGE
 else
-	initobject copy_and_run.o
+	if CONFIG_CBFS
+		initobject cbfs_and_run.o
+	else
+		initobject copy_and_run.o
+	end
 end
diff --git a/src/arch/i386/lib/cbfs_and_run.c b/src/arch/i386/lib/cbfs_and_run.c
new file mode 100644
index 0000000..eaded11
--- /dev/null
+++ b/src/arch/i386/lib/cbfs_and_run.c
@@ -0,0 +1,23 @@
+/* by yhlu 6.2005
+	moved from nrv2v.c and some lines from crt0.S
+   2006/05/02 - stepan: move nrv2b to an extra file.
+*/
+
+#include <console/console.h>
+#include <cbfs.h>
+
+void cbfs_and_run_core(char *filename, unsigned ebp)
+{
+	u8 *dst;
+	print_debug("Jumping to image.\r\n");
+	dst = cbfs_load_stage(filename);
+	print_debug("Jumping to image.\r\n");
+
+	__asm__ volatile (
+		"movl %%eax, %%ebp\n\t"
+		"cli\n\t"
+		"jmp     *%%edi\n\t"
+		:: "a"(ebp), "D"(dst)
+	);
+
+}