soc/intel/cmn/cse: Create API to get CSE Lite WP Information
This patch creates an API for CSE-Lite specific SKU to retrieve the
Write Protect (WP) information (`cse_log_ro_write_protection_info`)
like WP range and limit, if the region is write-protected or not etc.
BUG=none
TEST=Able to compile the cse_lite.c file for google/kano without
any error.
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I8f4b7880534ded5401b6f8d601ded88019c636c8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69968
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
diff --git a/src/soc/intel/common/block/cse/cse_lite.c b/src/soc/intel/common/block/cse/cse_lite.c
index f051061..37640f4 100644
--- a/src/soc/intel/common/block/cse/cse_lite.c
+++ b/src/soc/intel/common/block/cse/cse_lite.c
@@ -10,6 +10,7 @@
#include <intelbasecode/debug_feature.h>
#include <intelblocks/cse.h>
#include <intelblocks/cse_layout.h>
+#include <intelblocks/spi.h>
#include <security/vboot/misc.h>
#include <security/vboot/vboot_common.h>
#include <soc/intel/common/reset.h>
@@ -133,6 +134,28 @@
static const char * const cse_regions[] = {"RO", "RW"};
+void cse_log_ro_write_protection_info(bool mfg_mode)
+{
+ bool cse_ro_wp_en = is_spi_wp_cse_ro_en();
+
+ printk(BIOS_DEBUG, "ME: WP for RO is enabled : %s\n",
+ cse_ro_wp_en ? "YES" : "NO");
+
+ if (cse_ro_wp_en) {
+ uint32_t base, limit;
+ spi_get_wp_cse_ro_range(&base, &limit);
+ printk(BIOS_DEBUG, "ME: RO write protection scope - Start=0x%X, End=0x%X\n",
+ base, limit);
+ }
+
+ /*
+ * If manufacturing mode is disabled, but CSE RO is not write protected,
+ * log error.
+ */
+ if (!mfg_mode && !cse_ro_wp_en)
+ printk(BIOS_ERR, "ME: Write protection for CSE RO is not enabled\n");
+}
+
bool cse_get_boot_performance_data(struct cse_boot_perf_rsp *boot_perf_rsp)
{
struct cse_boot_perf_req {