/* SPDX-License-Identifier: GPL-2.0-only */ #include <boardid.h> #include <boot/coreboot_tables.h> #include <delay.h> #include <device/device.h> #include <gpio.h> #include <soc/clock.h> #include <soc/soc_services.h> #include <soc/usb.h> #include <symbols.h> #include <vendorcode/google/chromeos/chromeos.h> #include "mmu.h" #define USB_ENABLE_GPIO 51 static void setup_usb(void) { #if !CONFIG(BOARD_VARIANT_AP148) gpio_tlmm_config_set(USB_ENABLE_GPIO, FUNC_SEL_GPIO, GPIO_PULL_UP, GPIO_10MA, GPIO_ENABLE); gpio_set(USB_ENABLE_GPIO, 1); #endif usb_clock_config(); setup_usb_host1(); } #define TPM_RESET_GPIO 22 static void setup_tpm(void) { if (board_id() != BOARD_ID_PROTO_0) return; /* Only proto0 have TPM reset connected to GPIO22 */ gpio_tlmm_config_set(TPM_RESET_GPIO, FUNC_SEL_GPIO, GPIO_PULL_UP, GPIO_4MA, GPIO_ENABLE); /* * Generate a reset pulse. The spec calls for 80 us minimum, let's * make it twice as long. If the output was driven low originally, the * reset pulse will be even longer. */ gpio_set(TPM_RESET_GPIO, 0); udelay(160); gpio_set(TPM_RESET_GPIO, 1); } #define SW_RESET_GPIO 26 static void assert_sw_reset(void) { if (board_id() == BOARD_ID_PROTO_0) return; /* * only proto0.2 and later care about this. We want to keep the * ethernet switch in reset, otherwise it comes up in default * (bridging) mode. */ gpio_tlmm_config_set(SW_RESET_GPIO, FUNC_SEL_GPIO, GPIO_PULL_UP, GPIO_4MA, GPIO_ENABLE); gpio_set(SW_RESET_GPIO, 1); } static void mainboard_init(struct device *dev) { /* disable mmu and d-cache before setting up secure world.*/ dcache_mmu_disable(); start_tzbsp(); /* Setup mmu and d-cache again as non secure entries. */ setup_mmu(DRAM_INITIALIZED); start_rpm(); setup_usb(); assert_sw_reset(); setup_tpm(); /* Functionally a 0-cost no-op if NAND is not present */ board_nand_init(); /* Copy WIFI calibration data into CBMEM. */ if (CONFIG(CHROMEOS)) cbmem_add_vpd_calibration_data(); /* * Make sure bootloader can issue sounds The frequency is calculated * as "<frame_rate> * <bit_width> * <channels> * 4", i.e. * * 48000 * 2 * 16 * 4 = 6144000 */ audio_clock_config(6144000); } static void mainboard_enable(struct device *dev) { dev->ops->init = &mainboard_init; } struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable, }; void lb_board(struct lb_header *header) { struct lb_range *dma; dma = (struct lb_range *)lb_new_record(header); dma->tag = LB_TAG_DMA; dma->size = sizeof(*dma); dma->range_start = (uintptr_t)_dma_coherent; dma->range_size = REGION_SIZE(dma_coherent); /* Retrieve the switch interface MAC addresses. */ if (CONFIG(CHROMEOS)) lb_table_add_macs_from_vpd(header); }