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| author | Miao Yan <yanmiaobest@gmail.com> | 2016-01-20 09:57:05 (GMT) |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2016-01-28 05:53:30 (GMT) |
| commit | a3b15a055662ea4a8db6b8f70aa870b541e0cda9 (patch) | |
| tree | 8cf7e507785d9c32f0432dd7f019057fc6e64759 /arch/x86/cpu/qemu/qemu.c | |
| parent | 25757220d6c11645b32489e9c8318559815b0dee (diff) | |
| download | u-boot-fsl-qoriq-a3b15a055662ea4a8db6b8f70aa870b541e0cda9.tar.xz | |
x86: qemu: setup PM IO base for ACPI in southbridge
Enable ACPI IO space for piix4 (for pc board) and ich9 (for q35 board)
Signed-off-by: Miao Yan <yanmiaobest@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86/cpu/qemu/qemu.c')
| -rw-r--r-- | arch/x86/cpu/qemu/qemu.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/cpu/qemu/qemu.c b/arch/x86/cpu/qemu/qemu.c index 5a7b929..f8af566 100644 --- a/arch/x86/cpu/qemu/qemu.c +++ b/arch/x86/cpu/qemu/qemu.c @@ -15,6 +15,31 @@ static bool i440fx; +static void enable_pm_piix(void) +{ + u8 en; + u16 cmd; + + /* Set the PM I/O base */ + x86_pci_write_config32(PIIX_PM, PMBA, CONFIG_ACPI_PM1_BASE | 1); + + /* Enable access to the PM I/O space */ + cmd = x86_pci_read_config16(PIIX_PM, PCI_COMMAND); + cmd |= PCI_COMMAND_IO; + x86_pci_write_config16(PIIX_PM, PCI_COMMAND, cmd); + + /* PM I/O Space Enable (PMIOSE) */ + en = x86_pci_read_config8(PIIX_PM, PMREGMISC); + en |= PMIOSE; + x86_pci_write_config8(PIIX_PM, PMREGMISC, en); +} + +static void enable_pm_ich9(void) +{ + /* Set the PM I/O base */ + x86_pci_write_config32(ICH9_PM, PMBA, CONFIG_ACPI_PM1_BASE | 1); +} + static void qemu_chipset_init(void) { u16 device, xbcs; @@ -53,10 +78,14 @@ static void qemu_chipset_init(void) xbcs = x86_pci_read_config16(PIIX_ISA, XBCS); xbcs |= APIC_EN; x86_pci_write_config16(PIIX_ISA, XBCS, xbcs); + + enable_pm_piix(); } else { /* Configure PCIe ECAM base address */ x86_pci_write_config32(PCI_BDF(0, 0, 0), PCIEX_BAR, CONFIG_PCIE_ECAM_BASE | BAR_EN); + + enable_pm_ich9(); } qemu_fwcfg_init(); |