[S] Change in coreboot[master]: sc7180: Fix for DDR-training-failure during warm reset with OTA

[Venkat Thogaru (Code Review)]

Venkat Thogaru has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/67406 )

Change subject: sc7180: Fix for DDR-training-failure during warm reset with OTA
......................................................................

sc7180: Fix for DDR-training-failure during warm reset with OTA

Verify reboot type in case of OTA. If it is warmboot, will
force for cold boot inorder to trigger DDR training

BUG=b:236990316
TEST=Validated on qualcomm sc7180 development board.
     Cold boot is triggered if current reboot is warmboot
     incase of OTA

Signed-off-by: Venkat Thogaru 
Change-Id: I908370662292d9f768d1ac89452775178e07fc78
---
M src/soc/qualcomm/common/qclib.c
1 file changed, 26 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/06/67406/1

diff --git a/src/soc/qualcomm/common/qclib.c b/src/soc/qualcomm/common/qclib.c
index 90bcc20..b52c5cc 100644
--- a/src/soc/qualcomm/common/qclib.c
+++ b/src/soc/qualcomm/common/qclib.c
@@ -16,8 +16,10 @@
 #include <security/vboot/misc.h>
 #include <vb2_api.h>
 #include <commonlib/bsd/mem_chip_info.h>
+#include <include/reset.h>

#define QCLIB_VERSION 0
+#define DDR_FORCED_COLDBOOT 4

/* store QcLib return data until CBMEM_CREATION_HOOK runs */
 static void *mem_chip_addr;
@@ -276,6 +278,12 @@
    mmu_restore_context(&pre_qclib_mmu_context);
    mmu_enable();

+	printk(BIOS_DEBUG, "\nReboot verify for OTA\n");
+	if ((qclib_cb_if_table.global_attributes >> (DDR_FORCED_COLDBOOT - 1)) & (0x1)) {
+		printk(BIOS_DEBUG, "Rebooting Cold-Boot \n");
+		board_reset();
+	}
+
    /* step through I/F table, handling return values */
    for (i = 0; i < qclib_cb_if_table.num_entries; i++)
    	if (qclib_cb_if_table.te[i].blob_attributes &