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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>
This commit is contained in:
Marek Vasut 2018-10-11 16:15:41 +02:00
parent 1d85c4bd5b
commit ac49c5fbe9
1 changed files with 73 additions and 0 deletions
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73
plat/renesas/rcar/bl2_plat_setup.c
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@ -328,6 +328,76 @@ meminfo_t *bl2_plat_sec_mem_layout(void)
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 @@ lcm_state:
panic();
}
/* Add platform compatible string */
bl2_populate_compatible_string(fdt);
/* Print DRAM layout */
bl2_advertise_dram_size(product);