| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <arch/stages.h> |
| #include <console/console.h> |
| #include <fmap.h> |
| #include <soc/dramc_param.h> |
| #include <soc/emi.h> |
| #include <soc/mmu_operations.h> |
| #include <soc/mt6358.h> |
| #include <soc/pll.h> |
| #include <soc/rtc.h> |
| |
| #include "early_init.h" |
| |
| /* This must be defined in chromeos.fmd in same name and size. */ |
| #define CAL_REGION_RW_DDR_TRAINING "RW_DDR_TRAINING" |
| #define CAL_REGION_RW_DDR_TRAINING_SIZE 0x2000 |
| |
| _Static_assert(sizeof(struct dramc_param) <= CAL_REGION_RW_DDR_TRAINING_SIZE, |
| "sizeof(struct dramc_param) exceeds " CAL_REGION_RW_DDR_TRAINING); |
| |
| static bool read_calibration_data_from_flash(struct dramc_param *dparam) |
| { |
| const size_t length = sizeof(*dparam); |
| size_t ret = fmap_read_area(CAL_REGION_RW_DDR_TRAINING, dparam, length); |
| printk(BIOS_DEBUG, "%s: ret=%#lx, length=%#lx\n", |
| __func__, ret, length); |
| |
| return ret == length; |
| } |
| |
| static bool write_calibration_data_to_flash(const struct dramc_param *dparam) |
| { |
| const size_t length = sizeof(*dparam); |
| size_t ret = fmap_overwrite_area(CAL_REGION_RW_DDR_TRAINING, dparam, length); |
| printk(BIOS_DEBUG, "%s: ret=%#lx, length=%#lx\n", |
| __func__, ret, length); |
| |
| return ret == length; |
| } |
| |
| /* dramc_param is ~2K and too large to fit in stack. */ |
| static struct dramc_param dramc_parameter; |
| |
| static struct dramc_param_ops dparam_ops = { |
| .param = &dramc_parameter, |
| .read_from_flash = &read_calibration_data_from_flash, |
| .write_to_flash = &write_calibration_data_to_flash, |
| }; |
| |
| void platform_romstage_main(void) |
| { |
| /* This will be done in verstage if CONFIG_VBOOT is enabled. */ |
| if (!CONFIG(VBOOT)) |
| mainboard_early_init(); |
| |
| mt6358_init(); |
| /* Adjust VSIM2 down to 2.7V because it is shared with IT6505. */ |
| pmic_set_vsim2_cali(2700); |
| mt_pll_raise_little_cpu_freq(1989 * MHz); |
| pmic_init_scp_voltage(); |
| rtc_boot(); |
| mt_mem_init(&dparam_ops); |
| mtk_mmu_after_dram(); |
| } |