axs101: bump DDR size from 256 to 512 Mb

[people/ms/u-boot.git] / common / cmd_mmc.c

diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
index bd1edc8c844871e85be5b3e812436e082d66f40e..c1916c9b56a6456bebb115367308d8e03c5f268a 100644 (file)
--- a/common/cmd_mmc.c
+++ b/common/cmd_mmc.c
@@ -330,6 +330,40 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                        printf("EMMC boot partition Size change Failed.\n");
                        return 1;
                }
+       } else if (strcmp(argv[1], "rst-function") == 0) {
+               /*
+                * Set the RST_n_ENABLE bit of RST_n_FUNCTION
+                * The only valid values are 0x0, 0x1 and 0x2 and writing
+                * a value of 0x1 or 0x2 sets the value permanently.
+                */
+               int dev;
+               struct mmc *mmc;
+               u8 enable;
+
+               if (argc == 4) {
+                       dev = simple_strtoul(argv[2], NULL, 10);
+                       enable = simple_strtoul(argv[3], NULL, 10);
+               } else {
+                       return CMD_RET_USAGE;
+               }
+
+               if (enable > 2 || enable < 0) {
+                       puts("Invalid RST_n_ENABLE value\n");
+                       return CMD_RET_USAGE;
+               }
+
+               mmc = find_mmc_device(dev);
+               if (!mmc) {
+                       printf("no mmc device at slot %x\n", dev);
+                       return 1;
+               }
+
+               if (IS_SD(mmc)) {
+                       puts("RST_n_FUNCTION only exists on eMMC\n");
+                       return 1;
+               }
+
+               return mmc_set_rst_n_function(mmc, enable);
 #endif /* CONFIG_SUPPORT_EMMC_BOOT */
        }
 
@@ -436,6 +470,9 @@ U_BOOT_CMD(
        " - Change sizes of boot and RPMB partitions of specified device\n"
        "mmc partconf dev boot_ack boot_partition partition_access\n"
        " - Change the bits of the PARTITION_CONFIG field of the specified device\n"
+       "mmc rst-function dev value\n"
+       " - Change the RST_n_FUNCTION field of the specified device\n"
+       "   WARNING: This is a write-once field and 0 / 1 / 2 are the only valid values.\n"
 #endif
        "mmc setdsr - set DSR register value\n"
        );