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Diffstat (limited to 'board/ti/am43xx/board.c')
-rw-r--r--board/ti/am43xx/board.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c
index dcd8cbb..4fc1a40 100644
--- a/board/ti/am43xx/board.c
+++ b/board/ti/am43xx/board.c
@@ -9,6 +9,8 @@
*/
#include <common.h>
+#include <i2c.h>
+#include <asm/errno.h>
#include <spl.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
@@ -17,6 +19,50 @@
DECLARE_GLOBAL_DATA_PTR;
+/*
+ * Read header information from EEPROM into global structure.
+ */
+static int read_eeprom(struct am43xx_board_id *header)
+{
+ /* Check if baseboard eeprom is available */
+ if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
+ printf("Could not probe the EEPROM at 0x%x\n",
+ CONFIG_SYS_I2C_EEPROM_ADDR);
+ return -ENODEV;
+ }
+
+ /* read the eeprom using i2c */
+ if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, (uchar *)header,
+ sizeof(struct am43xx_board_id))) {
+ printf("Could not read the EEPROM\n");
+ return -EIO;
+ }
+
+ if (header->magic != 0xEE3355AA) {
+ /*
+ * read the eeprom using i2c again,
+ * but use only a 1 byte address
+ */
+ if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1, (uchar *)header,
+ sizeof(struct am43xx_board_id))) {
+ printf("Could not read the EEPROM at 0x%x\n",
+ CONFIG_SYS_I2C_EEPROM_ADDR);
+ return -EIO;
+ }
+
+ if (header->magic != 0xEE3355AA) {
+ printf("Incorrect magic number (0x%x) in EEPROM\n",
+ header->magic);
+ return -EINVAL;
+ }
+ }
+
+ strncpy(am43xx_board_name, (char *)header->name, sizeof(header->name));
+ am43xx_board_name[sizeof(header->name)] = 0;
+
+ return 0;
+}
+
#ifdef CONFIG_SPL_BUILD
const struct dpll_params dpll_ddr = {