| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <arch/exception.h> |
| #include <arch/stages.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <lib.h> |
| #include <program_loading.h> |
| #include <soc/addressmap.h> |
| #include <soc/ccplex.h> |
| #include <soc/clock.h> |
| #include <soc/sdram.h> |
| #include <soc/sdram_configs.h> |
| #include <soc/romstage.h> |
| #include <soc/nvidia/tegra/apbmisc.h> |
| #include <symbols.h> |
| #include <vendorcode/google/chromeos/chromeos.h> |
| |
| void __weak romstage_mainboard_init(void) |
| { |
| /* Default empty implementation. */ |
| } |
| |
| void romstage(void) |
| { |
| console_init(); |
| exception_init(); |
| |
| printk(BIOS_INFO, "T210: romstage here\n"); |
| |
| #if CONFIG(BOOTROM_SDRAM_INIT) |
| printk(BIOS_INFO, "T210 romstage: SDRAM init done by BootROM, RAMCODE = %d\n", |
| sdram_get_ram_code()); |
| #else |
| sdram_init(get_sdram_config()); |
| printk(BIOS_INFO, "T210 romstage: sdram_init done\n"); |
| #endif |
| |
| /* |
| * IMPORTANT: |
| * DO NOT INITIALIZE ANY CARVEOUT BEFORE TZ. |
| * |
| * 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 |
| * initialization because CBMEM lives right below the Trust Zone which |
| * needs to be properly identified. |
| */ |
| trustzone_region_init(); |
| |
| /* Now do various other carveouts */ |
| gpu_region_init(); |
| nvdec_region_init(); |
| tsec_region_init(); |
| vpr_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, "T210 romstage: CPU prepare done\n"); |
| |
| romstage_mainboard_init(); |
| |
| run_ramstage(); |
| } |
| |
| void platform_prog_run(struct prog *prog) |
| { |
| /* We'll switch to a new stack, so validate our old one here. */ |
| checkstack(_estack, 0); |
| |
| ccplex_cpu_start(prog_entry(prog)); |
| |
| clock_halt_avp(); |
| } |