diff options
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/baytrail/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/chip.h | 4 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/sd.c | 65 |
3 files changed, 70 insertions, 0 deletions
diff --git a/src/soc/intel/baytrail/Makefile.inc b/src/soc/intel/baytrail/Makefile.inc index 6485cc0aa4..48fb4b448a 100644 --- a/src/soc/intel/baytrail/Makefile.inc +++ b/src/soc/intel/baytrail/Makefile.inc @@ -43,6 +43,7 @@ ramstage-y += scc.c ramstage-y += emmc.c ramstage-y += lpss.c ramstage-y += pcie.c +ramstage-y += sd.c # Remove as ramstage gets fleshed out ramstage-y += placeholders.c diff --git a/src/soc/intel/baytrail/chip.h b/src/soc/intel/baytrail/chip.h index 250f644cac..43a3efb650 100644 --- a/src/soc/intel/baytrail/chip.h +++ b/src/soc/intel/baytrail/chip.h @@ -51,6 +51,10 @@ struct soc_intel_baytrail_config { /* LPE Audio Clock configuration. */ int lpe_codec_clk_freq; /* 19 or 25 are valid. */ int lpe_codec_clk_num; /* Platform clock pins. [0:5] are valid. */ + + /* Native SD Card controller - override controller capabilities. */ + uint32_t sdcard_cap_low; + uint32_t sdcard_cap_high; }; extern struct chip_operations soc_intel_baytrail_ops; diff --git a/src/soc/intel/baytrail/sd.c b/src/soc/intel/baytrail/sd.c new file mode 100644 index 0000000000..82833c31c4 --- /dev/null +++ b/src/soc/intel/baytrail/sd.c @@ -0,0 +1,65 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <arch/io.h> +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <reg_script.h> + +#include <baytrail/pci_devs.h> +#include <baytrail/ramstage.h> +#include "chip.h" + +#define CAP_OVERRIDE_LOW 0xa0 +#define CAP_OVERRIDE_HIGH 0xa4 +# define USE_CAP_OVERRIDES (1 << 31) + +static void sd_init(device_t dev) +{ + struct soc_intel_baytrail_config *config = dev->chip_info; + + if (config == NULL) + return; + + if (config->sdcard_cap_low != 0 || config->sdcard_cap_high != 0) { + printk(BIOS_DEBUG, "Overriding SD Card controller caps.\n"); + pci_write_config32(dev, CAP_OVERRIDE_LOW, + config->sdcard_cap_low); + pci_write_config32(dev, CAP_OVERRIDE_HIGH, + config->sdcard_cap_high | USE_CAP_OVERRIDES); + } +} + +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 = sd_init, + .enable = NULL, + .scan_bus = NULL, + .ops_pci = &soc_pci_ops, +}; + +static const struct pci_driver southcluster __pci_driver = { + .ops = &device_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = SD_DEVID, +}; |