nb/intel/gm45/igd: Hide IGD while disabling
Hide the IGD to make sure ramstage doesn't detect it. Change-Id: If389016f3bb0c4c2fd0b826914997a87a9137201 Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/18194 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber <nico.h@gmx.de>
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Martin Roth
parent
a5c2ac6256
commit
bb1af99622
@@ -127,6 +127,11 @@ static void disable_igd(const sysinfo_t *const sysinfo)
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MCHBAR16(0x119e) = (MCHBAR16(0x119e) & ~(7 << 13)) | (4 << 13);
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MCHBAR16(0x119e) |= (1 << 12);
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}
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/* Hide IGD. */
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u32 deven = pci_read_config32(mch_dev, D0F0_DEVEN);
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deven &= ~(3 << 3);
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pci_write_config32(mch_dev, D0F0_DEVEN, deven);
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}
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void init_igd(const sysinfo_t *const sysinfo)
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