Lee Leahy has uploaded a new change for review. ( https://review.coreboot.org/19020 )
Change subject: DO NOT MERGE: apollolake: Add ramstage eMMC testing ......................................................................
DO NOT MERGE: apollolake: Add ramstage eMMC testing
Change-Id: I0a9ca1fe990897400cc5921146d83581c218af54 --- M src/soc/intel/apollolake/Makefile.inc A src/soc/intel/apollolake/emmc.c M src/soc/intel/apollolake/include/soc/pci_ids.h 3 files changed, 75 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/20/19020/1
diff --git a/src/soc/intel/apollolake/Makefile.inc b/src/soc/intel/apollolake/Makefile.inc index 411bf58..cd25d86 100644 --- a/src/soc/intel/apollolake/Makefile.inc +++ b/src/soc/intel/apollolake/Makefile.inc @@ -86,6 +86,7 @@ ramstage-y += xdci.c ramstage-y += xhci.c ramstage-y += sd.c +ramstage-y += emmc.c
postcar-y += flash_ctrlr.c postcar-y += memmap.c diff --git a/src/soc/intel/apollolake/emmc.c b/src/soc/intel/apollolake/emmc.c new file mode 100644 index 0000000..ca71a7f --- /dev/null +++ b/src/soc/intel/apollolake/emmc.c @@ -0,0 +1,73 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2016 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/io.h> +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/sdhci.h> +#include <lib.h> +#include <soc/pci_ids.h> + +static void emmc_init(struct device *dev) +{ + uint32_t bar; + lba_t blocks_read; + uint8_t buffer[512]; + uint16_t command; + int err; + SdhciHost host; + + /* Get the temporary base address */ + bar = pci_read_config32(dev, PCI_BASE_ADDRESS_0); + bar &= ~0xf; + + /* Enable the eMMC controller */ + command = pci_read_config16(dev, PCI_COMMAND); + command |= PCI_COMMAND_MEMORY; + pci_write_config16(dev, PCI_COMMAND, command); + + /* Initialize the eMMC device */ + printk(BIOS_DEBUG, "Initializing the SDHC/eMMC\n"); + err = sdhci_host_init(&host, (void *)bar, + SDHCI_PLATFORM_EMMC_1V8_POWER | SDHCI_PLATFORM_SUPPORTS_HS400ES, + 0, 0, 0); + if (err) { + printk(BIOS_ERR, + "ERROR - eMMC failed to initialize, err = %d\n", + err); + return; + } + + /* Read block 0 */ + printk(BIOS_DEBUG, "Reading block 0\n" ); + blocks_read = block_mmc_read(host.mmc_ctrlr.media, 0, 1, &buffer); + if (blocks_read) + hexdump(buffer, sizeof(buffer)); +} + +static const struct device_operations device_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = emmc_init, +}; + +static const struct pci_driver pmc __pci_driver = { + .ops = &device_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_APOLLOLAKE_EMMC, +}; diff --git a/src/soc/intel/apollolake/include/soc/pci_ids.h b/src/soc/intel/apollolake/include/soc/pci_ids.h index 8b548ee..ba2c957 100644 --- a/src/soc/intel/apollolake/include/soc/pci_ids.h +++ b/src/soc/intel/apollolake/include/soc/pci_ids.h @@ -46,6 +46,7 @@ #define PCI_DEVICE_ID_APOLLOLAKE_SPI0 0x5ac2 /* 00:19.0 */ #define PCI_DEVICE_ID_APOLLOLAKE_SPI1 0x5ac4 /* 00:19.1 */ #define PCI_DEVICE_ID_APOLLOLAKE_SPI2 0x5ac6 /* 00:19.2 */ +#define PCI_DEVICE_ID_APOLLOLAKE_EMMC 0x5acc /* 00:1c.0 */ #define PCI_DEVICE_ID_APOLLOLAKE_LPC 0x5ae8 /* 00:1f.0 */
#endif /* _SOC_APOLLOLAKE_PCI_IDS_H_ */
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Lee Leahy (Code Review)