[coreboot-gerrit] Change in coreboot[master]: ec/google/chromeec: Introduce SKU_ID helpers

[Edward O'Callaghan (Code Review)]

Edward O'Callaghan has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/39018 )

Change subject: ec/google/chromeec: Introduce SKU_ID helpers
......................................................................

ec/google/chromeec: Introduce SKU_ID helpers

Change-Id: I805b25465a3b4ee3dc0cbda5feb9e9ea2493ff9e
Signed-off-by: Edward O'Callaghan 
---
M src/ec/google/chromeec/Kconfig
M src/ec/google/chromeec/ec.h
M src/ec/google/chromeec/ec_boardid.c
3 files changed, 40 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/18/39018/1

diff --git a/src/ec/google/chromeec/Kconfig b/src/ec/google/chromeec/Kconfig
index b33864f..5616d94 100644
--- a/src/ec/google/chromeec/Kconfig
+++ b/src/ec/google/chromeec/Kconfig
@@ -100,6 +100,11 @@
    hex
    default 0x0

+# set to 0xff for LEGACY
+config EC_GOOGLE_CHROMEEC_SKU_ID_MAX
+	hex
+	default 0x7fffffff
+
 config EC_GOOGLE_CHROMEEC_BOARDNAME
    depends on EC_GOOGLE_CHROMEEC
    string "Chrome EC board name for EC"
diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h
index 5ce375e..f5c2e1a 100644
--- a/src/ec/google/chromeec/ec.h
+++ b/src/ec/google/chromeec/ec.h
@@ -88,6 +88,9 @@
 int google_chromeec_cbi_get_dram_part_num(char *buf, size_t bufsize);
 int google_chromeec_cbi_get_oem_name(char *buf, size_t bufsize);

+uint32_t google_chromeec_get_board_sku(void);
+const char *google_chromeec_smbios_system_sku(void);
+
 /* MEC uses 0x800/0x804 as register/index pair, thus an 8-byte resource. */
 #define MEC_EMI_BASE		0x800
 #define MEC_EMI_SIZE		8
diff --git a/src/ec/google/chromeec/ec_boardid.c b/src/ec/google/chromeec/ec_boardid.c
index 1307ce1..aa191c3 100644
--- a/src/ec/google/chromeec/ec_boardid.c
+++ b/src/ec/google/chromeec/ec_boardid.c
@@ -27,3 +27,35 @@

return id;
 }
+
+#define SKU_UNKNOWN		0xFFFFFFFF
+
+uint32_t google_chromeec_get_board_sku(void)
+{
+	static uint32_t sku_id = SKU_UNKNOWN;
+
+	if (sku_id != SKU_UNKNOWN)
+		return sku_id;
+
+	if (google_chromeec_cbi_get_sku_id(&sku_id))
+		sku_id = SKU_UNKNOWN;
+
+	return sku_id;
+}
+
+const char *google_chromeec_smbios_system_sku(void)
+{
+	static char sku_str[7]; /* sku{0..255} */
+	uint32_t sku_id = get_board_sku();
+
+	if ((sku_id == SKU_UNKNOWN) ||
+		(sku_id >  CONFIG_EC_GOOGLE_CHROMEEC_SKU_MAX)) {
+		printk(BIOS_ERR, "%s: Unexpected SKU ID %u\n",
+			__func__, sku_id);
+		return "";
+	}
+
+	snprintf(sku_str, sizeof(sku_str), "sku%u", sku_id);
+
+	return sku_str;
+}