vboot: deprecate vboot_handoff structure

vboot_handoff is no longer used in coreboot, and is not
needed in CBMEM or cbtable.

BUG=b:124141368, b:124192753
TEST=make clean && make runtests
BRANCH=none

Change-Id: I782d53f969dc9ae2775e3060371d06e7bf8e1af6
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33536
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

payloads/libpayload/include/coreboot_tables.h

@@ -57,7 +57,7 @@ enum {
 	CB_TAG_CBMEM_CONSOLE		= 0x0017,
 	CB_TAG_MRC_CACHE		= 0x0018,
 	CB_TAG_VBNV			= 0x0019,
-	CB_TAG_VBOOT_HANDOFF		= 0x0020,
+	CB_TAG_VBOOT_HANDOFF		= 0x0020,  /* deprecated */
 	CB_TAG_X86_ROM_MTRR		= 0x0021,
 	CB_TAG_DMA			= 0x0022,
 	CB_TAG_RAM_OOPS			= 0x0023,

payloads/libpayload/include/sysinfo.h

@@ -95,8 +95,6 @@ struct sysinfo_t {
 	struct cb_header *header;
 	struct cb_mainboard *mainboard;
 
-	void	*vboot_handoff;
-	u32	vboot_handoff_size;
 	void *vboot_workbuf;
 	uint32_t vboot_workbuf_size;
 

payloads/libpayload/libc/coreboot.c

@@ -78,14 +78,6 @@ static void cb_parse_serial(void *ptr, struct sysinfo_t *info)
 	info->serial = ((struct cb_serial *)ptr);
 }
 
-static void cb_parse_vboot_handoff(unsigned char *ptr, struct sysinfo_t *info)
-{
-	struct lb_range *vbho = (struct lb_range *)ptr;
-
-	info->vboot_handoff = (void *)(uintptr_t)vbho->range_start;
-	info->vboot_handoff_size = vbho->range_size;
-}
-
 static void cb_parse_vboot_workbuf(unsigned char *ptr, struct sysinfo_t *info)
 {
 	struct lb_range *vbwb = (struct lb_range *)ptr;
@@ -367,9 +359,6 @@ 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;
 		case CB_TAG_VBOOT_WORKBUF:
 			cb_parse_vboot_workbuf(ptr, info);
 			break;

src/commonlib/include/commonlib/cbmem_id.h

@@ -68,7 +68,7 @@
 #define CBMEM_ID_TCPA_TCG_LOG	0x54445041
 #define CBMEM_ID_TIMESTAMP	0x54494d45
 #define CBMEM_ID_TPM2_TCG_LOG	0x54504d32
-#define CBMEM_ID_VBOOT_HANDOFF	0x780074f0
+#define CBMEM_ID_VBOOT_HANDOFF	0x780074f0  /* deprecated */
 #define CBMEM_ID_VBOOT_SEL_REG	0x780074f1  /* deprecated */
 #define CBMEM_ID_VBOOT_WORKBUF	0x78007343
 #define CBMEM_ID_VPD		0x56504420

src/commonlib/include/commonlib/coreboot_tables.h

@@ -68,7 +68,7 @@ enum {
 	LB_TAG_CBMEM_CONSOLE		= 0x0017,
 	LB_TAG_MRC_CACHE		= 0x0018,
 	LB_TAG_VBNV			= 0x0019,
-	LB_TAG_VBOOT_HANDOFF		= 0x0020,
+	LB_TAG_VBOOT_HANDOFF		= 0x0020,  /* deprecated */
 	LB_TAG_X86_ROM_MTRR		= 0x0021,
 	LB_TAG_DMA			= 0x0022,
 	LB_TAG_RAM_OOPS			= 0x0023,

src/lib/coreboot_table.c

@@ -209,22 +209,6 @@ static void lb_vbnv(struct lb_header *header)
 }
 #endif /* CONFIG_CHROMEOS */
 
-static void lb_vboot_handoff(struct lb_header *header)
-{
-	void *addr;
-	uint32_t size;
-	struct lb_range *vbho;
-
-	if (vboot_get_handoff_info(&addr, &size))
-		return;
-
-	vbho = (struct lb_range *)lb_new_record(header);
-	vbho->tag = LB_TAG_VBOOT_HANDOFF;
-	vbho->size = sizeof(*vbho);
-	vbho->range_start = (intptr_t)addr;
-	vbho->range_size = size;
-}
-
 static void lb_vboot_workbuf(struct lb_header *header)
 {
 	struct lb_range *vbwb;
@@ -563,9 +547,6 @@ static uintptr_t write_coreboot_table(uintptr_t rom_table_end)
 #endif
 
 	if (CONFIG(VBOOT)) {
-		/* pass along the vboot_handoff address. */
-		lb_vboot_handoff(head);
-
 		/* pass along the vboot workbuf address. */
 		lb_vboot_workbuf(head);
 	}

src/security/vboot/vboot_common.c

@@ -51,30 +51,6 @@ int vboot_can_enable_udc(void)
 	return 0;
 }
 
-/* ========================== VBOOT HANDOFF APIs =========================== */
-int vboot_get_handoff_info(void **addr, uint32_t *size)
-{
-	/*
-	 * vboot_handoff is present only after cbmem comes online. If we are in
-	 * pre-ram stage, then bail out early.
-	 */
-	if (ENV_BOOTBLOCK ||
-	    (ENV_VERSTAGE && CONFIG(VBOOT_STARTS_IN_BOOTBLOCK)))
-		return -1;
-
-	struct vboot_handoff *vboot_handoff;
-	vboot_handoff = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
-
-	if (vboot_handoff == NULL)
-		return -1;
-
-	*addr = vboot_handoff;
-
-	if (size)
-		*size = sizeof(*vboot_handoff);
-	return 0;
-}
-
 /* ============================ VBOOT REBOOT ============================== */
 void __weak vboot_platform_prepare_reboot(void)
 {

src/security/vboot/vboot_common.h

@@ -32,27 +32,6 @@ int vboot_named_region_device_rw(const char *name, struct region_device *rdev);
  */
 int vboot_check_recovery_request(void);
 
-/* ========================== VBOOT HANDOFF APIs =========================== */
-/*
- * The vboot_handoff structure contains the data to be consumed by downstream
- * firmware after firmware selection has been completed. Namely it provides
- * vboot shared data as well as the flags from VbInit.
- */
-struct vboot_handoff {
-	uint32_t reserved0;  /* originally from VbInitParams */
-	uint32_t out_flags;
-	uint32_t selected_firmware;
-	char shared_data[VB_SHARED_DATA_MIN_SIZE];
-} __packed;
-
-/*
- * vboot_get_handoff_info returns pointer to the vboot_handoff structure if
- * available. vboot_handoff is available only after CBMEM comes online. If size
- * is not NULL, size of the vboot_handoff structure is returned in it.
- * Returns 0 on success and -1 on error.
- */
-int vboot_get_handoff_info(void **addr, uint32_t *size);
-
 /* ============================ VBOOT REBOOT ============================== */
 /*
  * vboot_reboot handles the reboot requests made by vboot_reference library. It