diff options
author | Dave Frodin <dave.frodin@se-eng.com> | 2015-01-19 11:40:38 -0700 |
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committer | Dave Frodin <dave.frodin@se-eng.com> | 2015-01-27 15:07:45 +0100 |
commit | bc21a41e1ca045baae57f79d89aafdf682528a4b (patch) | |
tree | 217891284eb2f483f57a053b94d1f4fc6e7f94fe /src/southbridge/amd/pi/hudson/bootblock.c | |
parent | bd1d1580d3cdbd1f438e8fb0d960102f252c6939 (diff) |
southbridge/amd/pi: Rename Avalon to Hudson
To maintain consistancy with southbridge/amd/agesa/hudson rename
pi/avalon to pi/hudson in advance of adding support for the
base hudson southbridge.
Change-Id: Icff8c4c06aae2d40cbd9e90903754735ac3510c3
Signed-off-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-on: http://review.coreboot.org/8251
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Diffstat (limited to 'src/southbridge/amd/pi/hudson/bootblock.c')
-rw-r--r-- | src/southbridge/amd/pi/hudson/bootblock.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/southbridge/amd/pi/hudson/bootblock.c b/src/southbridge/amd/pi/hudson/bootblock.c new file mode 100644 index 0000000000..3cdba8b907 --- /dev/null +++ b/src/southbridge/amd/pi/hudson/bootblock.c @@ -0,0 +1,67 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2010 Advanced Micro Devices, 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 <stdint.h> +#include <arch/io.h> +#include <device/pci_ids.h> + +/* + * Enable 4MB (LPC) ROM access at 0xFFC00000 - 0xFFFFFFFF. + * + * Hardware should enable LPC ROM by pin straps. This function does not + * handle the theoretically possible PCI ROM, FWH, or SPI ROM configurations. + * + * The HUDSON power-on default is to map 512K ROM space. + * + */ +static void hudson_enable_rom(void) +{ + u8 reg8; + pci_devfn_t dev; + + dev = PCI_DEV(0, 0x14, 3); + + /* Decode variable LPC ROM address ranges 1 and 2. */ + reg8 = pci_read_config8(dev, 0x48); + reg8 |= (1 << 3) | (1 << 4); + pci_write_config8(dev, 0x48, reg8); + + /* LPC ROM address range 1: */ + /* Enable LPC ROM range mirroring start at 0x000e(0000). */ + pci_write_config16(dev, 0x68, 0x000e); + /* Enable LPC ROM range mirroring end at 0x000f(ffff). */ + pci_write_config16(dev, 0x6a, 0x000f); + + /* LPC ROM address range 2: */ + /* + * Enable LPC ROM range start at: + * 0xfff8(0000): 512KB + * 0xfff0(0000): 1MB + * 0xffe0(0000): 2MB + * 0xffc0(0000): 4MB + */ + pci_write_config16(dev, 0x6c, 0x10000 - (CONFIG_COREBOOT_ROMSIZE_KB >> 6)); + /* Enable LPC ROM range end at 0xffff(ffff). */ + pci_write_config16(dev, 0x6e, 0xffff); +} + +static void bootblock_southbridge_init(void) +{ + hudson_enable_rom(); +} |