void main(void)
{
timestamp_add_now(TS_START_ROMSTAGE);
console_init();
configure_l2ctlr();
tsadc_init();
/* vdd_log 1200mv is enough for ddr run 666Mhz */
regulate_vdd_log(1200);
timestamp_add_now(TS_BEFORE_INITRAM);
sdram_init(get_sdram_config());
timestamp_add_now(TS_AFTER_INITRAM);
/* Now that DRAM is up, add mappings for it and DMA coherency buffer. */
mmu_config_range((uintptr_t)_dram/MiB,
sdram_size_mb(), DCACHE_WRITEBACK);
mmu_config_range((uintptr_t)_dma_coherent/MiB,
_dma_coherent_size/MiB, DCACHE_OFF);
cbmem_initialize_empty();
timestamp_add_now(TS_END_ROMSTAGE);
run_ramstage();
}
static void tegra210_init(void *chip_info)
{
struct tegra_revision rev;
tegra_revision_info(&rev);
printk(BIOS_INFO, "chip %x rev %02x.%x\n",
rev.chip_id, rev.major, rev.minor);
/* Save sdram parameters to scratch regs to be used in LP0 resume */
sdram_lp0_save_params(get_sdram_config());
printk(BIOS_INFO, "sdram params saved.\n");
}
static void __attribute__((noinline)) romstage(void)
{
timestamp_init(0);
timestamp_add_now(TS_START_ROMSTAGE);
console_init();
exception_init();
sdram_init(get_sdram_config());
/* used for MMU and CBMEM setup, in MB */
u32 dram_start_mb = (uintptr_t)_dram/MiB;
u32 dram_end_mb = sdram_max_addressable_mb();
u32 dram_size_mb = dram_end_mb - dram_start_mb;
configure_l2_cache();
mmu_init();
/* Device memory below DRAM is uncached. */
mmu_config_range(0, dram_start_mb, DCACHE_OFF);
/* SRAM is cached. MMU code will round size up to page size. */
mmu_config_range((uintptr_t)_sram/MiB, div_round_up(_sram_size, MiB),
DCACHE_WRITEBACK);
/* DRAM is cached. */
mmu_config_range(dram_start_mb, dram_size_mb, DCACHE_WRITEBACK);
/* A window for DMA is uncached. */
mmu_config_range((uintptr_t)_dma_coherent/MiB,
_dma_coherent_size/MiB, DCACHE_OFF);
/* The space above DRAM is uncached. */
if (dram_end_mb < 4096)
mmu_config_range(dram_end_mb, 4096 - dram_end_mb, DCACHE_OFF);
mmu_disable_range(0, 1);
dcache_mmu_enable();
/*
* A watchdog reset only resets part of the system so it ends up in
* a funny state. If that happens, we need to reset the whole machine.
*/
if (power_reset_status() == POWER_RESET_WATCHDOG) {
printk(BIOS_INFO, "Watchdog reset detected, rebooting.\n");
hard_reset();
}
/* FIXME: this may require coordination with moving timestamps */
cbmem_initialize_empty();
early_mainboard_init();
run_ramstage();
}
void main(void)
{
#if CONFIG_COLLECT_TIMESTAMPS
uint64_t start_romstage_time;
uint64_t before_dram_time;
uint64_t after_dram_time;
uint64_t base_time = timestamp_get();
start_romstage_time = timestamp_get();
#endif
console_init();
configure_l2ctlr();
tsadc_init();
/* vdd_log 1200mv is enough for ddr run 666Mhz */
regulate_vdd_log(1200);
#if CONFIG_COLLECT_TIMESTAMPS
before_dram_time = timestamp_get();
#endif
sdram_init(get_sdram_config());
#if CONFIG_COLLECT_TIMESTAMPS
after_dram_time = timestamp_get();
#endif
/* Now that DRAM is up, add mappings for it and DMA coherency buffer. */
mmu_config_range((uintptr_t)_dram/MiB,
sdram_size_mb(), DCACHE_WRITEBACK);
mmu_config_range((uintptr_t)_dma_coherent/MiB,
_dma_coherent_size/MiB, DCACHE_OFF);
cbmem_initialize_empty();
#if CONFIG_COLLECT_TIMESTAMPS
timestamp_init(base_time);
timestamp_add(TS_START_ROMSTAGE, start_romstage_time);
timestamp_add(TS_BEFORE_INITRAM, before_dram_time);
timestamp_add(TS_AFTER_INITRAM, after_dram_time);
timestamp_add_now(TS_END_ROMSTAGE);
#endif
#if IS_ENABLED(CONFIG_VBOOT_VERIFY_FIRMWARE)
void *entry = vboot2_load_ramstage();
if (entry != NULL)
stage_exit(entry);
#endif
run_ramstage();
}
void platform_romstage_main(void)
{
tsadc_init(TSHUT_POL_HIGH);
/* Init DVS to conservative values. */
init_dvs_outputs();
prepare_sdmmc();
prepare_usb();
sdram_init(get_sdram_config());
mmu_config_range((void *)0, (uintptr_t)sdram_size_mb() * MiB,
CACHED_MEM);
mmu_config_range(_dma_coherent, REGION_SIZE(dma_coherent),
UNCACHED_MEM);
}
void romstage(void)
{
timestamp_add_now(TS_START_ROMSTAGE);
console_init();
exception_init();
printk(BIOS_INFO, "T132: romstage here\n");
#if CONFIG_BOOTROM_SDRAM_INIT
printk(BIOS_INFO, "T132 romstage: SDRAM init done by BootROM, RAMCODE = %d\n",
sdram_get_ram_code());
#else
sdram_init(get_sdram_config());
printk(BIOS_INFO, "T132 romstage: sdram_init done\n");
#endif
timestamp_add_now(TS_AFTER_INITRAM);
/*
* Trust Zone needs to be initialized after the DRAM initialization
* because carveout registers are programmed during DRAM init.
* cbmem_initialize() is dependent on the Trust Zone region
* initalization because CBMEM lives right below the Trust Zone which
* needs to be properly identified.
*/
trustzone_region_init();
/*
* When romstage is running it's always on the reboot path -- never a
* resume path where cbmem recovery is required. Therefore, always
* initialize the cbmem area to be empty.
*/
cbmem_initialize_empty();
ccplex_cpu_prepare();
printk(BIOS_INFO, "T132 romstage: cpu prepare done\n");
ccplex_load_mts();
printk(BIOS_INFO, "T132 romstage: MTS loading done\n");
romstage_mainboard_init();
run_ramstage();
}
void main(void)
{
console_init();
tsadc_init(TSHUT_POL_HIGH);
exception_init();
/* Init DVS to conservative values. */
init_dvs_outputs();
prepare_usb();
sdram_init(get_sdram_config());
mmu_config_range((void *)0, (uintptr_t)dram_size, CACHED_MEM);
mmu_config_range(_dma_coherent, _dma_coherent_size, UNCACHED_MEM);
cbmem_initialize_empty();
run_ramstage();
}