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smc: Boot SMC on A11 and T2 #522

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8 changes: 8 additions & 0 deletions src/kboot.c
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
#include "pmgr.h"
#include "sep.h"
#include "sio.h"
#include "smc.h"
#include "smp.h"
#include "tunables.h"
#include "types.h"
Expand Down Expand Up @@ -2746,6 +2747,13 @@ int kboot_boot(void *kernel)
pcie_init();
dapf_init_all();

if (chip_id == T8015 || chip_id == T8012) {
smc_power_on();
asc_dev_t *smc = asc_init("/arm-io/smc");
asc_cpu_start(smc);
asc_free(smc);
}

printf("Setting SMP mode to WFE...\n");
smp_set_wfe_mode(true);
printf("Preparing to boot kernel at %p with fdt at %p\n", kernel, dt);
Expand Down
15 changes: 15 additions & 0 deletions src/smc.c
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Original file line number Diff line number Diff line change
@@ -1,7 +1,9 @@
/* SPDX-License-Identifier: MIT */

#include "adt.h"
#include "assert.h"
#include "malloc.h"
#include "pmgr.h"
#include "smc.h"
#include "string.h"
#include "types.h"
Expand Down Expand Up @@ -120,12 +122,25 @@ void smc_shutdown(smc_dev_t *smc)
free(smc);
}

void smc_power_on(void)
{
if (chip_id != T8015 && chip_id != T8012)
return;

pmgr_power_on(0, "SMC_I2CM1");
pmgr_power_on(0, "SMC_FABRIC");
pmgr_adt_power_enable("/arm-io/smc");
}

smc_dev_t *smc_init(void)
{
smc_dev_t *smc = calloc(1, sizeof(smc_dev_t));
if (!smc)
return NULL;

if (chip_id == T8015 || chip_id == T8012)
smc_power_on();

smc->asc = asc_init("/arm-io/smc");
if (!smc->asc) {
printf("SMC: failed to initialize ASC\n");
Expand Down
1 change: 1 addition & 0 deletions src/smc.h
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Expand Up @@ -12,6 +12,7 @@ typedef struct smc_dev smc_dev_t;
int smc_write_u32(smc_dev_t *smc, u32 key, u32 value);

smc_dev_t *smc_init(void);
void smc_power_on(void);
void smc_shutdown(smc_dev_t *smc);

#endif