actually, this will probably work on any kernel, process.c doesn't change
much.
These are tested, working, patches for process.c so that soft poweroff and
reset work. I grabbed some code Ollie sent for the 630, but have set it up
so we can extend it at will for other chipsets.
This will patch arch/i386/kernel/process.c
ron
*** arch/i386/kernel/process.c Thu Dec 21 10:12:22 2000
--- ../linux-2.4.0-test11/arch/i386/kernel/process.c Sun Oct 1 21:35:15 2000
***************
*** 48,193 ****
#include <linux/irq.h>
- #define CONFIG_LINUXBIOS_PM
- #ifdef CONFIG_LINUXBIOS_PM
- #include <linux/pci.h>
- void
- sis503_reset(struct pci_dev *dev)
- {
- unsigned char b;
- unsigned short w;
- unsigned short acpi_base;
-
- printk(KERN_ERR __FUNCTION__ ": starting reset operation. \n");
- /* Enable ACPI by set B7 on Reg 0x40, LPC */
- outl(0x80000840, 0x0cf8);
- b = inb(0x0cfc) | 0x80;
- outb(b, 0xcfc);
-
- printk(KERN_ERR __FUNCTION__ ": enabled ACPI. \n");
- /* get the ACPI base address for register 0x74,0x75 of LPC */
- outl(0x80000874, 0x0cf8);
- w = inw(0x0cfc);
- acpi_base = w;
-
- printk (KERN_ERR __FUNCTION__ ":acpi base: %x\n", acpi_base);
-
- /* Set software watchdog timer init value */
- outb(0x03, 0x4a + acpi_base);
- printk(KERN_ERR __FUNCTION__ ": set the dog. \n");
-
- printk(KERN_ERR __FUNCTION__ ": enabling dog. \n");
- /* Software watchdog enable, issue PCIRST# when time expire */
- outb(0x8f, 0x4b + acpi_base);
-
- printk(KERN_ERR __FUNCTION__ ": We should reset soon. \n");
- }
- void
- sis503_off(struct pci_dev *dev)
- {
- unsigned char b;
- unsigned short w;
- unsigned short acpi_base;
-
- printk(KERN_ERR __FUNCTION__ ": starting reset operation. \n");
- /* Enable ACPI by set B7 on Reg 0x40, LPC */
- outl(0x80000840, 0x0cf8);
- b = inb(0x0cfc) | 0x80;
- outb(b, 0xcfc);
- printk(KERN_ERR __FUNCTION__ ": enabled ACPI. \n");
-
- /* get the ACPI base address for register 0x74,0x75 of LPC */
- outl(0x80000874, 0x0cf8);
- w = inw(0x0cfc);
- acpi_base = w;
-
- printk (KERN_ERR __FUNCTION__ ":acpi base: %x\n", acpi_base);
-
- /* ACPI Register 5, Bit 10-12, Sleeping Type,
- set to 101 -> S5, soft_off */
- outb(0x14, 0x05 + acpi_base);
- printk(KERN_ERR __FUNCTION__ ": DONE setting sleep type. \n");
-
- /* ACPI Register 5, Bit 13, Sleep Enable */
- outb(0x20 | 0x14, 0x05 + acpi_base);
- printk(KERN_ERR __FUNCTION__ ": DONE sleep enable. \n");
-
- }
- struct pci_dev *
- pci_find_device(unsigned int vendor, unsigned int device,
- const struct pci_dev *from);
-
- struct linuxbios_control {
- u_short vendor, device;
- void (*poweroff)(struct pci_dev *);
- void (*reset)(struct pci_dev *);
- };
-
- /* not in pci_ids.h yet? */
- #define PCI_VENDOR_ID_SI 0x1039
- #define PCI_DEVICE_ID_SI_503 0x8
-
- struct linuxbios_control controls[] = {
- {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, sis503_off, sis503_reset}
- };
-
- struct linuxbios_control *findcontrol(struct pci_dev **d)
- {
- struct linuxbios_control *lb = controls, *retval = 0;
- int i;
-
- printk(KERN_ERR __FUNCTION__ ": Find vendor 0x%x device 0x%x\n",
- lb->vendor, lb->device);
- for(lb = controls, i = 0;
- (i < sizeof(controls)/sizeof(controls[0])) && (! retval);
- i++, lb++)
- {
- *d = pci_find_device(lb->vendor, lb->device, 0);
- if (*d)
- retval = lb;
- }
-
- printk(KERN_ERR __FUNCTION__ ": result of find is %p\n", retval);
- return retval;
- }
-
- void
- linuxbios_poweroff(void)
- {
- struct linuxbios_control *lb = 0;
- struct pci_dev *dev;
-
- printk(KERN_ERR __FUNCTION__ ": find an lb\n");
- lb = findcontrol(&dev);
-
- printk(KERN_ERR __FUNCTION__ ": found lb %p, call %p\n",
- lb, lb ? lb->poweroff : 0);
- if (lb && (lb->poweroff))
- lb->poweroff(dev);
- printk(KERN_ERR __FUNCTION__ ": Returning? Can't happen, I thought?\n");
- }
-
- void
- linuxbios_reset(void)
- {
- struct linuxbios_control *lb = 0;
- struct pci_dev *dev;
-
- printk(KERN_ERR __FUNCTION__ ": find an lb\n");
- lb = findcontrol(&dev);
-
- printk(KERN_ERR __FUNCTION__ ": found lb %p, call %p\n",
- lb, lb ? lb->reset : 0);
- if (lb && (lb->reset))
- lb->reset(dev);
- printk(KERN_ERR __FUNCTION__ ": Returning? Can't happen, I thought?\n");
-
- }
-
-
- #endif
-
-
asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
int hlt_counter;
--- 48,53 ----
***************
*** 488,496 ****
smp_send_stop();
disable_IO_APIC();
#endif
- #ifdef CONFIG_LINUXBIOS_PM
- linuxbios_reset();
- #endif
if(!reboot_thru_bios) {
/* rebooting needs to touch the page at absolute addr 0 */
--- 348,353 ----
***************
*** 518,528 ****
void machine_power_off(void)
{
- printk("MACHINE_POWER_OFF\n");
- #ifdef CONFIG_LINUXBIOS_PM
- linuxbios_poweroff();
- #endif
-
if (pm_power_off)
pm_power_off();
}
--- 375,380 ----
