fadt->reserved1 = 0;
int pm_sci_int = pci_config_readb(bdf, PCI_INTERRUPT_LINE);
fadt->sci_int = cpu_to_le16(pm_sci_int);
- fadt->smi_cmd = cpu_to_le32(BUILD_SMI_CMD_IO_ADDR);
+ fadt->smi_cmd = cpu_to_le32(PORT_SMI_CMD);
fadt->acpi_enable = 0xf1;
fadt->acpi_disable = 0xf0;
- fadt->pm1a_evt_blk = cpu_to_le32(BUILD_PM_IO_BASE);
- fadt->pm1a_cnt_blk = cpu_to_le32(BUILD_PM_IO_BASE + 0x04);
- fadt->pm_tmr_blk = cpu_to_le32(BUILD_PM_IO_BASE + 0x08);
+ fadt->pm1a_evt_blk = cpu_to_le32(PORT_ACPI_PM_BASE);
+ fadt->pm1a_cnt_blk = cpu_to_le32(PORT_ACPI_PM_BASE + 0x04);
+ fadt->pm_tmr_blk = cpu_to_le32(PORT_ACPI_PM_BASE + 0x08);
fadt->pm1_evt_len = 4;
fadt->pm1_cnt_len = 2;
fadt->pm_tmr_len = 4;
#define PORT_A20 0x0092
#define PORT_PIC2_CMD 0x00a0
#define PORT_PIC2_DATA 0x00a1
+#define PORT_SMI_CMD 0x00b2
+#define PORT_SMI_STATUS 0x00b3
#define PORT_DMA2_MASK_REG 0x00d4
#define PORT_DMA2_MODE_REG 0x00d6
#define PORT_DMA2_MASTER_CLEAR 0x00da
#define PORT_BIOS_DEBUG 0x0402
#define PORT_QEMU_CFG_CTL 0x0510
#define PORT_QEMU_CFG_DATA 0x0511
+#define PORT_ACPI_PM_BASE 0xb000
+#define PORT_SMB_BASE 0xb100
#define PORT_BIOS_APM 0x8900
// PORT_A20 bitdefs
if (vendor_id == PCI_VENDOR_ID_INTEL
&& device_id == PCI_DEVICE_ID_INTEL_82371AB_3) {
/* PIIX4 Power Management device (for ACPI) */
- u32 pm_io_base = BUILD_PM_IO_BASE;
- pci_config_writel(bdf, 0x40, pm_io_base | 1);
+ pci_config_writel(bdf, 0x40, PORT_ACPI_PM_BASE | 1);
pci_config_writeb(bdf, 0x80, 0x01); /* enable PM io space */
- u32 smb_io_base = BUILD_SMB_IO_BASE;
- pci_config_writel(bdf, 0x90, smb_io_base | 1);
+ pci_config_writel(bdf, 0x90, PORT_SMB_BASE | 1);
pci_config_writeb(bdf, 0xd2, 0x09); /* enable SMBus io space */
}
}
/* code to relocate SMBASE to 0xa0000 */
"smm_relocation_start:\n"
- " mov $0x38000 + 0x7efc, %ebx\n"
+ " mov $" __stringify(BUILD_SMM_INIT_ADDR) " + 0x7efc, %ebx\n"
" addr32 mov (%ebx), %al\n" /* revision ID to see if x86_64 or x86 */
" cmp $0x64, %al\n"
" je 1f\n"
- " mov $0x38000 + 0x7ef8, %ebx\n"
+ " mov $" __stringify(BUILD_SMM_INIT_ADDR) " + 0x7ef8, %ebx\n"
" jmp 2f\n"
"1:\n"
- " mov $0x38000 + 0x7f00, %ebx\n"
+ " mov $" __stringify(BUILD_SMM_INIT_ADDR) " + 0x7f00, %ebx\n"
"2:\n"
- " movl $0xa0000, %eax\n"
+ " movl $" __stringify(BUILD_SMM_ADDR) " - 0x8000, %eax\n"
" addr32 movl %eax, (%ebx)\n"
/* indicate to the BIOS that the SMM code was executed */
" mov $0x00, %al\n"
- " movw $0xb3, %dx\n"
+ " movw $" __stringify(PORT_SMI_STATUS) ", %dx\n"
" outb %al, %dx\n"
" rsm\n"
"smm_relocation_end:\n"
/* minimal SMM code to enable or disable ACPI */
"smm_code_start:\n"
- " movw $0xb2, %dx\n"
+ " movw $" __stringify(PORT_SMI_CMD) ", %dx\n"
" inb %dx, %al\n"
" cmp $0xf0, %al\n"
" jne 1f\n"
/* ACPI disable */
- " mov $" __stringify(BUILD_PM_IO_BASE) " + 0x04, %dx\n" /* PMCNTRL */
+ " mov $" __stringify(PORT_ACPI_PM_BASE) " + 0x04, %dx\n" /* PMCNTRL */
" inw %dx, %ax\n"
" andw $~1, %ax\n"
" outw %ax, %dx\n"
" jne 2f\n"
/* ACPI enable */
- " mov $" __stringify(BUILD_PM_IO_BASE) " + 0x04, %dx\n" /* PMCNTRL */
+ " mov $" __stringify(PORT_ACPI_PM_BASE) " + 0x04, %dx\n" /* PMCNTRL */
" inw %dx, %ax\n"
" orw $1, %ax\n"
" outw %ax, %dx\n"
if (value & (1 << 25))
return;
+ /* enable the SMM memory window */
+ pci_config_writeb(i440_bdf, 0x72, 0x02 | 0x48);
+
+ /* save original memory content */
+ memcpy((void *)BUILD_SMM_ADDR, (void *)BUILD_SMM_INIT_ADDR, BUILD_SMM_SIZE);
+
/* copy the SMM relocation code */
- memcpy((void *)0x38000, &smm_relocation_start,
+ memcpy((void *)BUILD_SMM_INIT_ADDR, &smm_relocation_start,
&smm_relocation_end - &smm_relocation_start);
/* enable SMI generation when writing to the APMC register */
pci_config_writel(bdf, 0x58, value | (1 << 25));
/* init APM status port */
- outb(0x01, 0xb3);
+ outb(0x01, PORT_SMI_STATUS);
/* raise an SMI interrupt */
- outb(0x00, 0xb2);
+ outb(0x00, PORT_SMI_CMD);
/* wait until SMM code executed */
- while (inb(0xb3) != 0x00)
+ while (inb(PORT_SMI_STATUS) != 0x00)
;
- /* enable the SMM memory window */
- pci_config_writeb(i440_bdf, 0x72, 0x02 | 0x48);
+ /* restore original memory content */
+ memcpy((void *)BUILD_SMM_INIT_ADDR, (void *)BUILD_SMM_ADDR, BUILD_SMM_SIZE);
/* copy the SMM code */
- memcpy((void *)0xa8000, &smm_code_start, &smm_code_end - &smm_code_start);
+ memcpy((void *)BUILD_SMM_ADDR, &smm_code_start
+ , &smm_code_end - &smm_code_start);
wbinvd();
/* close the SMM memory window and enable normal SMM */