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kboot: Forward DCP firmware versions into the DT

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Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2022-12-04 16:00:06 +09:00
parent e1b2c45f34
commit 2abf2b1693
1 changed files with 39 additions and 0 deletions
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39
src/kboot.c
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@ -1268,6 +1268,37 @@ static struct disp_mapping dcpext_reserved_regions_t600x[MAX_DCPEXT][2] = {
#define ARRAY_SIZE(s) (sizeof(s) / sizeof((s)[0]))
static int dt_set_dcp_firmware(const char *alias)
{
const char *path = fdt_get_alias(dt, alias);
if (!path)
return 0;
int node = fdt_path_offset(dt, path);
if (node < 0)
return 0;
if (firmware_set_fdt(dt, node, "apple,firmware-version", &os_firmware) < 0)
bail("FDT: Could not set apple,firmware-version for %s\n", path);
const struct fw_version_info *compat;
switch (os_firmware.version) {
case V12_4:
compat = &fw_versions[V12_3];
break;
default:
compat = &os_firmware;
break;
}
if (firmware_set_fdt(dt, node, "apple,firmware-compat", compat) < 0)
bail("FDT: Could not set apple,firmware-compat for %s\n", path);
return 0;
}
static int dt_set_display(void)
{
/* lock dart-disp0 to prevent old software from resetting it */
@ -1281,6 +1312,11 @@ static int dt_set_display(void)
* they are missing. */
int ret = 0;
ret = dt_set_dcp_firmware("dcp");
if (ret)
return ret;
if (!fdt_node_check_compatible(dt, 0, "apple,t8103")) {
ret = dt_carveout_reserved_regions("dcp", "disp0", "disp0_piodma",
disp_reserved_regions_t8103,
@ -1312,6 +1348,9 @@ static int dt_set_display(void)
char dcpext_alias[16];
snprintf(dcpext_alias, sizeof(dcpext_alias), "dcpext%d", n);
ret = dt_set_dcp_firmware(dcpext_alias);
if (ret)
break;
ret = dt_carveout_reserved_regions(dcpext_alias, NULL, NULL,
dcpext_reserved_regions_t600x[n],
ARRAY_SIZE(dcpext_reserved_regions_t600x[n]));