37 lines
983 B
C
37 lines
983 B
C
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#include <device/pci_ops.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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