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author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2015-01-09 23:48:47 +0200 |
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committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2015-01-10 13:53:51 +0100 |
commit | 78c5d584a087265e44b076647db19efd4db4a7bb (patch) | |
tree | 0f5e32c90cf0fb17db36d514baf6afc9c037d728 /src/southbridge/amd/cimx/sb800/ramtop.c | |
parent | 2320cbebc667ac6871d4d6c8b59fee27ba6e75e5 (diff) | |
download | coreboot-78c5d584a087265e44b076647db19efd4db4a7bb.tar.xz |
ACPI: Add acpi_is_wakeup_s3() for romstage
This replaces acpi_is_wakeup_early().
Change-Id: I23112c1fc7b6f99584bc065fbf6b10fb073b1eb6
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8187
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src/southbridge/amd/cimx/sb800/ramtop.c')
-rw-r--r-- | src/southbridge/amd/cimx/sb800/ramtop.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/southbridge/amd/cimx/sb800/ramtop.c b/src/southbridge/amd/cimx/sb800/ramtop.c new file mode 100644 index 0000000000..7e9abaeced --- /dev/null +++ b/src/southbridge/amd/cimx/sb800/ramtop.c @@ -0,0 +1,59 @@ +/* + * 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 <arch/acpi.h> +#include <cbmem.h> +#include "SBPLATFORM.h" + +int acpi_get_sleep_type(void) +{ + u16 tmp = inw(PM1_CNT_BLK_ADDRESS); + tmp = ((tmp & (7 << 10)) >> 10); + return (int)tmp; +} + +#ifndef __PRE_RAM__ +void backup_top_of_ram(uint64_t ramtop) +{ + u32 dword = (u32) ramtop; + int nvram_pos = 0xf8, i; /* temp */ + for (i = 0; i<4; i++) { + outb(nvram_pos, BIOSRAM_INDEX); + outb((dword >>(8 * i)) & 0xff , BIOSRAM_DATA); + nvram_pos++; + } +} +#endif + +unsigned long get_top_of_ram(void) +{ + u32 xdata = 0; + int xnvram_pos = 0xf8, xi; + if (acpi_get_sleep_type() != 3) + return 0; + for (xi = 0; xi<4; xi++) { + outb(xnvram_pos, BIOSRAM_INDEX); + xdata &= ~(0xff << (xi * 8)); + xdata |= inb(BIOSRAM_DATA) << (xi *8); + xnvram_pos++; + } + return (unsigned long) xdata; +} |