| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <ddk/debug.h> |
| #include <ddk/device.h> |
| #include <ddk/metadata.h> |
| #include <ddk/metadata/gpt.h> |
| #include <ddk/platform-defs.h> |
| #include <lib/mmio/mmio.h> |
| #include <hw/reg.h> |
| #include <lib/zx/handle.h> |
| |
| #include <soc/aml-t931/t931-gpio.h> |
| #include <soc/aml-t931/t931-hw.h> |
| #include <soc/aml-common/aml-sd-emmc.h> |
| |
| #include "sherlock.h" |
| |
| namespace sherlock { |
| |
| namespace { |
| |
| constexpr pbus_mmio_t emmc_mmios[] = { |
| { |
| .base = T931_SD_EMMC_C_BASE, |
| .length = T931_SD_EMMC_C_LENGTH, |
| }, |
| }; |
| |
| constexpr pbus_irq_t emmc_irqs[] = { |
| { |
| .irq = T931_SD_EMMC_C_IRQ, |
| .mode = ZX_INTERRUPT_MODE_EDGE_HIGH, |
| }, |
| }; |
| |
| constexpr pbus_bti_t emmc_btis[] = { |
| { |
| .iommu_index = 0, |
| .bti_id = BTI_EMMC, |
| }, |
| }; |
| |
| static const pbus_gpio_t emmc_gpios[] = { |
| { |
| .gpio = T931_EMMC_RST, |
| }, |
| }; |
| |
| static aml_sd_emmc_config_t config = { |
| .supports_dma = true, |
| //As per AMlogic, on S912 chipset, HS400 mode can be operated at 125MHZ or low. |
| .min_freq = 400000, |
| .max_freq = 120000000, |
| }; |
| |
| static const guid_map_t guid_map[] = { |
| { "boot", GUID_ZIRCON_A_VALUE }, |
| { "system", GUID_ZIRCON_B_VALUE }, |
| { "recovery", GUID_ZIRCON_R_VALUE }, |
| { "cache", GUID_FVM_VALUE } |
| }; |
| static_assert(sizeof(guid_map) / sizeof(guid_map[0]) <= DEVICE_METADATA_GUID_MAP_MAX_ENTRIES); |
| |
| static const pbus_metadata_t emmc_metadata[] = { |
| { |
| .type = DEVICE_METADATA_EMMC_CONFIG, |
| .data_buffer = &config, |
| .data_size = sizeof(config), |
| }, |
| { |
| .type = DEVICE_METADATA_GUID_MAP, |
| .data_buffer = guid_map, |
| .data_size = sizeof(guid_map), |
| } |
| }; |
| |
| static const pbus_boot_metadata_t emmc_boot_metadata[] = { |
| { |
| .zbi_type = DEVICE_METADATA_PARTITION_MAP, |
| .zbi_extra = 0, |
| }, |
| }; |
| |
| static pbus_dev_t emmc_dev = [](){ |
| pbus_dev_t dev; |
| dev.name = "sherlock-emmc"; |
| dev.vid = PDEV_VID_AMLOGIC; |
| dev.pid = PDEV_PID_GENERIC; |
| dev.did = PDEV_DID_AMLOGIC_SD_EMMC_C; |
| dev.mmio_list = emmc_mmios; |
| dev.mmio_count = countof(emmc_mmios); |
| dev.irq_list = emmc_irqs; |
| dev.irq_count = countof(emmc_irqs); |
| dev.bti_list = emmc_btis; |
| dev.bti_count = countof(emmc_btis); |
| dev.gpio_list = emmc_gpios; |
| dev.gpio_count = countof(emmc_gpios); |
| dev.metadata_list = emmc_metadata; |
| dev.metadata_count = countof(emmc_metadata); |
| dev.boot_metadata_list = emmc_boot_metadata; |
| dev.boot_metadata_count = countof(emmc_boot_metadata); |
| return dev; |
| }(); |
| |
| } // namespace |
| |
| zx_status_t Sherlock::EmmcInit() { |
| // set alternate functions to enable EMMC |
| gpio_impl_.SetAltFunction(T931_EMMC_D0, T931_EMMC_D0_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_D1, T931_EMMC_D1_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_D2, T931_EMMC_D2_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_D3, T931_EMMC_D3_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_D4, T931_EMMC_D4_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_D5, T931_EMMC_D5_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_D6, T931_EMMC_D6_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_D7, T931_EMMC_D7_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_CLK, T931_EMMC_CLK_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_RST, T931_EMMC_RST_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_CMD, T931_EMMC_CMD_FN); |
| gpio_impl_.SetAltFunction(T931_EMMC_DS, T931_EMMC_DS_FN); |
| |
| auto status = pbus_.DeviceAdd(&emmc_dev); |
| if (status != ZX_OK) { |
| zxlogf(ERROR, "%s: DeviceAdd failed %d\n", __func__, status); |
| return status; |
| } |
| |
| return ZX_OK; |
| } |
| |
| } // namespace sherlock |