[coreboot] New patch to review for coreboot: e858631 libpayload: add support for vboot_handoff

[Stefan Reinauer (stefan.reinauer@coreboot.org)]

Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2720

-gerrit

commit e8586316bba4c1aa8d929b64f22f08b638157ac2
Author: Aaron Durbin <adurbin at chromium.org>
Date:   Thu Mar 7 23:22:24 2013 -0600

    libpayload: add support for vboot_handoff
    
    The vboot_handoff structure needs to be parsed from the coreboot tables.
    Add a placeholder in sysinfo as well as the ability to parse the
    coreboot table entry concering the vboot_handoff structure.
    
    Built with unified boot loader and ebuild changes. Can find and use
    the VbInitParams for doing kernel selection.
    
    Change-Id: If40a863b4a445fa5f7814325add03355fd0ac647
    Signed-off-by: Aaron Durbin <adurbin at chromium.org>
---
 payloads/libpayload/arch/x86/coreboot.c       | 11 +++++++++++
 payloads/libpayload/include/coreboot_tables.h |  8 ++++++++
 payloads/libpayload/include/sysinfo.h         |  2 ++
 3 files changed, 21 insertions(+)

diff --git a/payloads/libpayload/arch/x86/coreboot.c b/payloads/libpayload/arch/x86/coreboot.c
index d39af4a..e8bc380 100644
--- a/payloads/libpayload/arch/x86/coreboot.c
+++ b/payloads/libpayload/arch/x86/coreboot.c
@@ -79,6 +79,14 @@ static void cb_parse_serial(void *ptr, struct sysinfo_t *info)
 }
 
 #ifdef CONFIG_CHROMEOS
+static void cb_parse_vboot_handoff(unsigned char *ptr, struct sysinfo_t *info)
+{
+	struct cb_vboot_handoff *vbho = (struct cb_vboot_handoff *)ptr;
+
+	info->vboot_handoff = vbho->vboot_handoff_addr;
+	info->vboot_handoff_size = vbho->vboot_handoff_size;
+}
+
 static void cb_parse_vbnv(unsigned char *ptr, struct sysinfo_t *info)
 {
 	struct cb_vbnv *vbnv = (struct cb_vbnv *)ptr;
@@ -258,6 +266,9 @@ static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
 		case CB_TAG_VBNV:
 			cb_parse_vbnv(ptr, info);
 			break;
+		case CB_TAG_VBOOT_HANDOFF:
+			cb_parse_vboot_handoff(ptr, info);
+			break;
 #endif
 		case CB_TAG_TIMESTAMPS:
 			cb_parse_tstamp(ptr, info);
diff --git a/payloads/libpayload/include/coreboot_tables.h b/payloads/libpayload/include/coreboot_tables.h
index 43fd41b..38bda55 100644
--- a/payloads/libpayload/include/coreboot_tables.h
+++ b/payloads/libpayload/include/coreboot_tables.h
@@ -209,6 +209,14 @@ struct cb_vbnv {
 	uint32_t vbnv_size;
 };
 
+#define CB_TAG_VBOOT_HANDOFF	0x0020
+struct cb_vboot_handoff {
+	uint32_t tag;
+	uint32_t size;
+	void *vboot_handoff_addr;
+	uint32_t vboot_handoff_size;
+};
+
 #define CB_TAG_CMOS_OPTION_TABLE 0x00c8
 struct cb_cmos_option_table {
 	u32 tag;
diff --git a/payloads/libpayload/include/sysinfo.h b/payloads/libpayload/include/sysinfo.h
index 80763f0..4c7ce45 100644
--- a/payloads/libpayload/include/sysinfo.h
+++ b/payloads/libpayload/include/sysinfo.h
@@ -88,6 +88,8 @@ struct sysinfo_t {
 	struct cb_mainboard *mainboard;
 
 #ifdef CONFIG_CHROMEOS
+	void	*vboot_handoff;
+	u32	vboot_handoff_size;
 	void	*vdat_addr;
 	u32	vdat_size;
 #endif