09564fce55
This ensures that function callback into the SoC code. Change-Id: Idc16d315ba25d17a2ab537fcdf0c2b51c8802a67 Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/22392 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2017 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <assert.h>
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#include <device/device.h>
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#include <intelblocks/gspi.h>
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#include <intelblocks/spi.h>
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#include <soc/iomap.h>
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#include "chip.h"
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const struct gspi_cfg *gspi_get_soc_cfg(void)
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{
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DEVTREE_CONST struct soc_intel_skylake_config *config;
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int devfn = SA_DEVFN_ROOT;
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DEVTREE_CONST struct device *dev = dev_find_slot(0, devfn);
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if (!dev || !dev->chip_info) {
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printk(BIOS_ERR, "%s: Could not find SoC devicetree config!\n",
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__func__);
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return NULL;
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}
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config = dev->chip_info;
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return &config->gspi[0];
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}
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uintptr_t gspi_get_soc_early_base(void)
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{
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return EARLY_GSPI_BASE_ADDRESS;
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}
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/*
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* SPI Bus 0 is Fast SPI and GSPI starts from SPI bus # 1 onwards. Thus, adjust
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* the bus # accordingly when referring to SPI / GSPI bus numbers.
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*/
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#define GSPI_TO_SPI_BUS(x) (x + 1)
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#define SPI_TO_GSPI_BUS(x) (x - 1)
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int gspi_soc_spi_to_gspi_bus(unsigned int spi_bus, unsigned int *gspi_bus)
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{
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if (spi_bus == 0)
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return -1;
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*gspi_bus = SPI_TO_GSPI_BUS(spi_bus);
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if (*gspi_bus >= CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX)
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return -1;
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return 0;
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}
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int gspi_soc_bus_to_devfn(unsigned int gspi_bus)
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{
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if (gspi_bus >= CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX)
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return -1;
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return spi_soc_bus_to_devfn(GSPI_TO_SPI_BUS(gspi_bus));
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}
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