summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/Kconfig7
-rw-r--r--src/include/boardid.h1
-rw-r--r--src/include/boot/coreboot_tables.h7
-rw-r--r--src/lib/coreboot_table.c16
4 files changed, 31 insertions, 0 deletions
diff --git a/src/Kconfig b/src/Kconfig
index 7c325c292b..569e404224 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -253,6 +253,13 @@ config UPDATE_IMAGE
is a suitable file for further processing.
The bootblock will not be modified.
+config RAM_CODE_SUPPORT
+ bool "Discover RAM configuration code and store it in coreboot table"
+ default n
+ help
+ If enabled, coreboot discovers RAM configuration (value obtained by
+ reading board straps) and stores it in coreboot table.
+
endmenu
source "src/mainboard/Kconfig"
diff --git a/src/include/boardid.h b/src/include/boardid.h
index d1c6ad9756..41c21d6e31 100644
--- a/src/include/boardid.h
+++ b/src/include/boardid.h
@@ -23,5 +23,6 @@
#include <stdint.h>
uint8_t board_id(void);
+uint32_t ram_code(void);
#endif /* __INCLUDE_BOARDID_H__ */
diff --git a/src/include/boot/coreboot_tables.h b/src/include/boot/coreboot_tables.h
index db55adaa36..56394733ce 100644
--- a/src/include/boot/coreboot_tables.h
+++ b/src/include/boot/coreboot_tables.h
@@ -276,6 +276,13 @@ struct lb_macs {
struct mac_address mac_addrs[0];
};
+#define LB_TAG_RAM_CODE 0x0028
+struct lb_ram_code {
+ uint32_t tag;
+ uint32_t size;
+ uint32_t ram_code;
+};
+
/* The following structures are for the cmos definitions table */
#define LB_TAG_CMOS_OPTION_TABLE 200
/* cmos header record */
diff --git a/src/lib/coreboot_table.c b/src/lib/coreboot_table.c
index 365283fffe..332bed172a 100644
--- a/src/lib/coreboot_table.c
+++ b/src/lib/coreboot_table.c
@@ -227,6 +227,19 @@ static void lb_board_id(struct lb_header *header)
#endif
}
+static void lb_ram_code(struct lb_header *header)
+{
+#if IS_ENABLED(CONFIG_RAM_CODE_SUPPORT)
+ struct lb_ram_code *code;
+
+ code = (struct lb_ram_code *)lb_new_record(header);
+
+ code->tag = LB_TAG_RAM_CODE;
+ code->size = sizeof(*code);
+ code->ram_code = ram_code();
+#endif
+}
+
static void add_cbmem_pointers(struct lb_header *header)
{
/*
@@ -452,6 +465,9 @@ unsigned long write_coreboot_table(
/* Add board ID if available */
lb_board_id(head);
+ /* Add RAM config if available */
+ lb_ram_code(head);
+
add_cbmem_pointers(head);
/* Add board-specific table entries, if any. */