plat: rcar: Generate platform compatible string
Generate /compatible string for the platform, so that the subsequent
stages know which platform they are running on. This could be useful
when ie. building U-Boot that contains DTs for multiple platforms and
can thus decide on which platform it is running. This would ultimately
allow single bootloader binary for all Gen3 platforms.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
index dce8c5a..754bbdf 100644
--- a/plat/renesas/rcar/bl2_plat_setup.c
+++ b/plat/renesas/rcar/bl2_plat_setup.c
@@ -328,6 +328,76 @@
return &bl2_tzram_layout;
}
+static void bl2_populate_compatible_string(void *fdt)
+{
+ uint32_t board_type;
+ uint32_t board_rev;
+ uint32_t reg;
+ int ret;
+
+ /* Populate compatible string */
+ rcar_get_board_type(&board_type, &board_rev);
+ switch (board_type) {
+ case BOARD_SALVATOR_X:
+ ret = fdt_setprop_string(fdt, 0, "compatible",
+ "renesas,salvator-x");
+ break;
+ case BOARD_SALVATOR_XS:
+ ret = fdt_setprop_string(fdt, 0, "compatible",
+ "renesas,salvator-xs");
+ break;
+ case BOARD_STARTER_KIT:
+ ret = fdt_setprop_string(fdt, 0, "compatible",
+ "renesas,m3ulcb");
+ break;
+ case BOARD_STARTER_KIT_PRE:
+ ret = fdt_setprop_string(fdt, 0, "compatible",
+ "renesas,h3ulcb");
+ break;
+ case BOARD_EBISU:
+ case BOARD_EBISU_4D:
+ ret = fdt_setprop_string(fdt, 0, "compatible",
+ "renesas,ebisu");
+ break;
+ default:
+ NOTICE("BL2: Cannot set compatible string, board unsupported\n");
+ panic();
+ }
+
+ if (ret < 0) {
+ NOTICE("BL2: Cannot set compatible string (ret=%i)\n", ret);
+ panic();
+ }
+
+ reg = mmio_read_32(RCAR_PRR);
+ switch (reg & RCAR_PRODUCT_MASK) {
+ case RCAR_PRODUCT_H3:
+ ret = fdt_appendprop_string(fdt, 0, "compatible",
+ "renesas,r8a7795");
+ break;
+ case RCAR_PRODUCT_M3:
+ ret = fdt_appendprop_string(fdt, 0, "compatible",
+ "renesas,r8a7796");
+ break;
+ case RCAR_PRODUCT_M3N:
+ ret = fdt_appendprop_string(fdt, 0, "compatible",
+ "renesas,r8a77965");
+ break;
+ case RCAR_PRODUCT_E3:
+ ret = fdt_appendprop_string(fdt, 0, "compatible",
+ "renesas,r8a77990");
+ break;
+ default:
+ NOTICE("BL2: Cannot set compatible string, SoC unsupported\n");
+ panic();
+ }
+
+ if (ret < 0) {
+ NOTICE("BL2: Cannot set compatible string (ret=%i)\n", ret);
+ panic();
+ }
+}
+
static void bl2_advertise_dram_entries(uint64_t dram_config[8])
{
char nodename[32] = { 0 };
@@ -676,6 +746,9 @@
panic();
}
+ /* Add platform compatible string */
+ bl2_populate_compatible_string(fdt);
+
/* Print DRAM layout */
bl2_advertise_dram_size(product);