Fix an early timer-related hang

This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-04-06 02:40:44 +02:00
parent 04a3792f87
commit f9e7780cff
2 changed files with 50 additions and 0 deletions

View file

@ -29,8 +29,12 @@
#define GRUB_CS5536_MSR_MAILBOX_ADDR 0xf4
#define GRUB_CS5536_MSR_MAILBOX_DATA0 0xf8
#define GRUB_CS5536_MSR_MAILBOX_DATA1 0xfc
#define GRUB_CS5536_MSR_IRQ_MAP_BAR 0x80000008
#define GRUB_CS5536_MSR_SMB_BAR 0x8000000b
#define GRUB_CS5536_MSR_GPIO_BAR 0x8000000c
#define GRUB_CS5536_MSR_MFGPT_BAR 0x8000000d
#define GRUB_CS5536_MSR_ACPI_BAR 0x8000000e
#define GRUB_CS5536_MSR_PM_BAR 0x8000000f
#define GRUB_CS5536_SMB_REG_DATA 0x0
#define GRUB_CS5536_SMB_REG_STATUS 0x1
#define GRUB_CS5536_SMB_REG_STATUS_SDAST (1 << 6)
@ -55,10 +59,15 @@
#define GRUB_CS5536_LBAR_ADDR_MASK GRUB_ULL (0x000000000000fff8)
#define GRUB_CS5536_LBAR_ENABLE GRUB_ULL (0x0000000100000000)
#define GRUB_CS5536_LBAR_MASK_MASK GRUB_ULL (0x0000f00000000000)
#define GRUB_CS5536_LBAR_TURN_ON (GRUB_CS5536_LBAR_ENABLE | GRUB_CS5536_LBAR_MASK_MASK)
/* PMON-compatible LBARs. */
#define GRUB_CS5536_LBAR_IRQ_MAP 0x0b360
#define GRUB_CS5536_LBAR_GPIO 0x0b000
#define GRUB_CS5536_LBAR_MFGPT 0x0b300
#define GRUB_CS5536_LBAR_SMBUS 0x0b390
#define GRUB_CS5536_LBAR_ACPI 0x0b340
#define GRUB_CS5536_LBAR_PM 0x0b280
#define GRUB_GPIO_SMBUS_PINS ((1 << 14) | (1 << 15))
#define GRUB_GPIO_REG_OUT_EN 0x4

View file

@ -67,6 +67,26 @@ grub_machine_mmap_iterate (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t,
return GRUB_ERR_NONE;
}
/* Dump of GPIO connections. FIXME: Remove useless and macroify. */
static grub_uint32_t gpiodump[] = {
0xffff0000, 0x2ffdd002, 0xffff0000, 0xffff0000,
0x2fffd000, 0xffff0000, 0x1000efff, 0xefff1000,
0x3ffbc004, 0xffff0000, 0xffff0000, 0xffff0000,
0x3ffbc004, 0x3ffbc004, 0xffff0000, 0x00000000,
0xffff0000, 0xffff0000, 0x3ffbc004, 0x3f9bc064,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0xffff0000, 0xffff0000, 0xffff0000, 0xffff0000,
0xffff0000, 0xffff0000, 0x0000ffff, 0xffff0000,
0xefff1000, 0xffff0000, 0xffff0000, 0xffff0000,
0xefff1000, 0xefff1000, 0xffff0000, 0x00000000,
0xffff0000, 0xffff0000, 0xefff1000, 0xffff0000,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x50000000, 0x00000000, 0x00000000,
};
void
grub_machine_init (void)
{
@ -121,6 +141,27 @@ grub_machine_init (void)
grub_arch_memsize = (totalmem >> 20);
grub_arch_highmemsize = 0;
}
/* Make sure GPIO is where we expect it to be. */
grub_cs5536_write_msr (dev, GRUB_CS5536_MSR_GPIO_BAR,
GRUB_CS5536_LBAR_TURN_ON
| GRUB_CS5536_LBAR_GPIO);
for (i = 0; i < (int) ARRAY_SIZE (gpiodump); i++)
((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_IO_BASE
+ GRUB_CS5536_LBAR_GPIO)) [i]
= gpiodump[i];
/* Enable more BARs. */
grub_cs5536_write_msr (dev, GRUB_CS5536_MSR_IRQ_MAP_BAR,
GRUB_CS5536_LBAR_TURN_ON
| GRUB_CS5536_LBAR_IRQ_MAP);
grub_cs5536_write_msr (dev, GRUB_CS5536_MSR_MFGPT_BAR,
GRUB_CS5536_LBAR_TURN_ON | GRUB_CS5536_LBAR_MFGPT);
grub_cs5536_write_msr (dev, GRUB_CS5536_MSR_ACPI_BAR,
GRUB_CS5536_LBAR_TURN_ON | GRUB_CS5536_LBAR_ACPI);
grub_cs5536_write_msr (dev, GRUB_CS5536_MSR_PM_BAR,
GRUB_CS5536_LBAR_TURN_ON | GRUB_CS5536_LBAR_PM);
}
modend = grub_modules_get_end ();