board: freescale: ls1012ardb: Add command to switch QSPI bank

Add command "boot_bank X" to switch the boot bank to either 1 or 2.

Signed-off-by: Jagdish Gediya <jagdish.gediya@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

diff --git a/board/freescale/ls1012ardb/ls1012ardb.c b/board/freescale/ls1012ardb/ls1012ardb.c
index a1668b97284a715579b0393f4e9964d9bb1817ca..888f8500d4b09f82d134e5ae6037bd7f9c37097c 100644 (file)
--- a/board/freescale/ls1012ardb/ls1012ardb.c
+++ b/board/freescale/ls1012ardb/ls1012ardb.c
@@ -25,6 +25,9 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#define BOOT_FROM_UPPER_BANK   0x2
+#define BOOT_FROM_LOWER_BANK   0x1
+
 int checkboard(void)
 {
 #ifdef CONFIG_TARGET_LS1012ARDB
@@ -211,3 +214,85 @@ int ft_board_setup(void *blob, bd_t *bd)
 
        return 0;
 }
+
+static int switch_to_bank1(void)
+{
+       u8 data;
+       int ret;
+
+       i2c_set_bus_num(0);
+
+       data = 0xf4;
+       ret = i2c_write(0x24, 0x3, 1, &data, 1);
+       if (ret) {
+               printf("i2c write error to chip : %u, addr : %u, data : %u\n",
+                      0x24, 0x3, data);
+       }
+
+       return ret;
+}
+
+static int switch_to_bank2(void)
+{
+       u8 data;
+       int ret;
+
+       i2c_set_bus_num(0);
+
+       data = 0xfc;
+       ret = i2c_write(0x24, 0x7, 1, &data, 1);
+       if (ret) {
+               printf("i2c write error to chip : %u, addr : %u, data : %u\n",
+                      0x24, 0x7, data);
+               goto err;
+       }
+
+       data = 0xf5;
+       ret = i2c_write(0x24, 0x3, 1, &data, 1);
+       if (ret) {
+               printf("i2c write error to chip : %u, addr : %u, data : %u\n",
+                      0x24, 0x3, data);
+       }
+err:
+       return ret;
+}
+
+static int convert_flash_bank(int bank)
+{
+       int ret = 0;
+
+       switch (bank) {
+       case BOOT_FROM_UPPER_BANK:
+               ret = switch_to_bank2();
+               break;
+       case BOOT_FROM_LOWER_BANK:
+               ret = switch_to_bank1();
+               break;
+       default:
+               ret = CMD_RET_USAGE;
+               break;
+       };
+
+       return ret;
+}
+
+static int flash_bank_cmd(cmd_tbl_t *cmdtp, int flag, int argc,
+                         char * const argv[])
+{
+       if (argc != 2)
+               return CMD_RET_USAGE;
+       if (strcmp(argv[1], "1") == 0)
+               convert_flash_bank(BOOT_FROM_LOWER_BANK);
+       else if (strcmp(argv[1], "2") == 0)
+               convert_flash_bank(BOOT_FROM_UPPER_BANK);
+       else
+               return CMD_RET_USAGE;
+
+       return 0;
+}
+
+U_BOOT_CMD(
+       boot_bank, 2, 0, flash_bank_cmd,
+       "Flash bank Selection Control",
+       "bank[1-lower bank/2-upper bank] (e.g. boot_bank 1)"
+);