~ubuntu-branches/ubuntu/saucy/seabios/saucy-proposed

Viewing changes to src/smm.c

Committer: Bazaar Package Importer
Author(s): Vagrant Cascadian
Date: 2010-11-26 17:54:44 UTC
mfrom: (1.1.2 upstream)
Revision ID: james.westby@ubuntu.com-20101126175444-rpdeja25wf6fjycx

Tags: 0.6.1.2-1

http://bugs.debian.org/604735

* New upstream version from git tag.
- Fixes virtio-blk failure after reboot (Closes: #604735).
* Update debian/watch file.

files added:
src/ssdt-proc.dsl

tools/transdump.py

files modified:
Makefile

debian/changelog

debian/watch

src/acpi-dsdt.dsl

src/acpi-dsdt.hex

src/acpi.c

src/acpi.h

src/ata.c

src/biosvar.h

src/boot.c

src/bootsplash.c

src/clock.c

src/config.h

src/coreboot.c

src/dev-i440fx.c

src/dev-i440fx.h

src/floppy.c

src/jpeg.c

src/jpeg.h

src/misc.c

src/mptable.c

src/paravirt.c

src/pci.c

src/pci.h

src/pciinit.c

src/pic.h

src/post.c

src/ps2port.c

src/romlayout.S

src/shadow.c

src/smm.c

src/smp.c

src/usb-msc.c

src/usb-msc.h

src/util.c

src/util.h

src/virtio-blk.c

tools/readserial.py

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added added

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src/smm.c

#include "config.h" // CONFIG_*

#include "ioport.h" // outb

#include "pci_ids.h" // PCI_VENDOR_ID_INTEL

#include "dev-i440fx.h"

ASM32FLAT(

".global smm_relocation_start\n"

extern u8 smm_code_start, smm_code_end;

void

smm_init(void)

smm_save_and_copy(void)

{

if (CONFIG_COREBOOT)

// SMM only supported on emulators.

return;

if (!CONFIG_USE_SMM)

return;

dprintf(3, "init smm\n");

// This code is hardcoded for PIIX4 Power Management device.

int bdf = pci_find_device(PCI_VENDOR_ID_INTEL

, PCI_DEVICE_ID_INTEL_82371AB_3);

if (bdf < 0)

// Device not found

return;

int i440_bdf = pci_find_device(PCI_VENDOR_ID_INTEL

, PCI_DEVICE_ID_INTEL_82441);

if (i440_bdf < 0)

return;

/* check if SMM init is already done */

u32 value = pci_config_readl(bdf, 0x58);

if (value & (1 << 25))

100

return;

101

102

/* enable the SMM memory window */

103

pci_config_writeb(i440_bdf, 0x72, 0x02 | 0x48);

104

105

/* save original memory content */

106

memcpy((void *)BUILD_SMM_ADDR, (void *)BUILD_SMM_INIT_ADDR, BUILD_SMM_SIZE);

107

108

/* copy the SMM relocation code */

109

memcpy((void *)BUILD_SMM_INIT_ADDR, &smm_relocation_start,

110

&smm_relocation_end - &smm_relocation_start);

111

112

/* enable SMI generation when writing to the APMC register */

113

pci_config_writel(bdf, 0x58, value | (1 << 25));

114

}

void

smm_relocate_and_restore(void)

{

115

/* init APM status port */

116

outb(0x01, PORT_SMI_STATUS);

117

129

104

memcpy((void *)BUILD_SMM_ADDR, &smm_code_start

130

105

, &smm_code_end - &smm_code_start);

131

106

wbinvd();

132

133

/* close the SMM memory window and enable normal SMM */

134

pci_config_writeb(i440_bdf, 0x72, 0x02 | 0x08);

107

}

108

109

static const struct pci_device_id smm_init_tbl[] = {

110

PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3,

111

piix4_apmc_smm_init),

112

113

PCI_DEVICE_END,

114

};

115

116

void

117

smm_init(void)

118

{

119

if (CONFIG_COREBOOT)

120

// SMM only supported on emulators.

121

return;

122

if (!CONFIG_USE_SMM)

123

return;

124

125

dprintf(3, "init smm\n");

126

pci_find_init_device(smm_init_tbl, NULL);

135

127

}

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