369b561315
The existing code incorrectly used standard PCI access calls in the bootblock. Use the I/O PCI access calls as the normal PCI access mechanisms have not yet been set up. Also ensure the recovery jumper GPIO has been set to input mode before reading it. Change-Id: Id626d01526427004b2404e4d9b44d7c987d172d1 Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> Reviewed-on: https://review.coreboot.org/12651 Tested-by: build bot (Jenkins) Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
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* Copyright (C) 2014 Edward O'Callaghan <eocallaghan@alterapraxis.com>
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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 <arch/io.h>
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#include <pc80/mc146818rtc.h>
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void bootblock_mainboard_init(void)
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{
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uint8_t recovery_enabled;
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unsigned char addr;
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unsigned char byte;
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bootblock_northbridge_init();
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bootblock_southbridge_init();
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/* Recovery jumper is connected to SP5100 GPIO61, and clears the GPIO when placed in the Recovery position */
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byte = pci_io_read_config8(PCI_DEV(0, 0x14, 0), 0x56);
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byte |= 0x1 << 4; /* Set GPIO61 to input mode */
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pci_io_write_config8(PCI_DEV(0, 0x14, 0), 0x56, byte);
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recovery_enabled = (!(pci_io_read_config8(PCI_DEV(0, 0x14, 0), 0x57) & 0x1));
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if (recovery_enabled) {
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#if CONFIG_USE_OPTION_TABLE
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/* Clear NVRAM checksum */
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for (addr = LB_CKS_RANGE_START; addr <= LB_CKS_RANGE_END; addr++) {
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cmos_write(0x0, addr);
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}
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/* Set fallback boot */
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byte = cmos_read(RTC_BOOT_BYTE);
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byte &= 0xfc;
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cmos_write(byte, RTC_BOOT_BYTE);
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#else
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/* FIXME
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* Figure out how to recover if the option table is not available
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*/
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#endif
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}
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}
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