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| Source at commit 1580 created 12 years 9 months ago. By blackosx, Attempted to enable 'exclusive' choices in auto generated boot options, but it's not working at present. I've added notes to remind me to look again at some point. | |
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| 1 | /*␊ |
| 2 | * ␊ |
| 3 | */␊ |
| 4 | ␊ |
| 5 | #include "libsaio.h"␊ |
| 6 | #include "pci.h"␊ |
| 7 | #include "hpet.h"␊ |
| 8 | ␊ |
| 9 | #ifndef DEBUG_HPET␊ |
| 10 | #define DEBUG_HPET 0␊ |
| 11 | #endif␊ |
| 12 | ␊ |
| 13 | #if DEBUG_HPET␊ |
| 14 | #define DBG(x...) printf(x)␊ |
| 15 | #else␊ |
| 16 | #define DBG(x...)␊ |
| 17 | #endif␊ |
| 18 | ␊ |
| 19 | static struct lpc_controller_t lpc_controllers[] = {␊ |
| 20 | ␊ |
| 21 | ␉// Default unknown chipset␊ |
| 22 | ␉{ 0, 0, "" },␊ |
| 23 | ␊ |
| 24 | ␉// Intel␊ |
| 25 | ␉{ 0x8086, 0x24dc, "ICH5" },␊ |
| 26 | ␉{ 0x8086, 0x2640, "ICH6" },␊ |
| 27 | ␉{ 0x8086, 0x2641, "ICH6M" },␊ |
| 28 | ␊ |
| 29 | ␉{ 0x8086, 0x27b0, "ICH7 DH" },␊ |
| 30 | ␉{ 0x8086, 0x27b8, "ICH7" },␊ |
| 31 | ␉{ 0x8086, 0x27b9, "ICH7M" },␊ |
| 32 | ␉{ 0x8086, 0x27bd, "ICH7M DH" },␊ |
| 33 | ␊ |
| 34 | ␉{ 0x8086, 0x2810, "ICH8R" },␊ |
| 35 | ␉{ 0x8086, 0x2811, "ICH8M-E" },␊ |
| 36 | ␉{ 0x8086, 0x2812, "ICH8DH" },␊ |
| 37 | ␉{ 0x8086, 0x2814, "ICH8DO" },␊ |
| 38 | ␉{ 0x8086, 0x2815, "ICH8M" },␊ |
| 39 | ␊ |
| 40 | ␉{ 0x8086, 0x2912, "ICH9DH" },␊ |
| 41 | ␉{ 0x8086, 0x2914, "ICH9DO" },␊ |
| 42 | ␉{ 0x8086, 0x2916, "ICH9R" },␊ |
| 43 | ␉{ 0x8086, 0x2917, "ICH9M-E" },␊ |
| 44 | ␉{ 0x8086, 0x2918, "ICH9" },␊ |
| 45 | ␉{ 0x8086, 0x2919, "ICH9M" },␊ |
| 46 | ␊ |
| 47 | ␉{ 0x8086, 0x3a14, "ICH10DO" },␊ |
| 48 | ␉{ 0x8086, 0x3a16, "ICH10R" },␊ |
| 49 | ␉{ 0x8086, 0x3a18, "ICH10" },␊ |
| 50 | ␉{ 0x8086, 0x3a1a, "ICH10D" },␊ |
| 51 | ␊ |
| 52 | };␊ |
| 53 | ␊ |
| 54 | void force_enable_hpet(pci_dt_t *lpc_dev)␊ |
| 55 | {␊ |
| 56 | ␉int i;␊ |
| 57 | ␉uint32_t␉val, hpet_address = 0xFED00000;␊ |
| 58 | ␉void␉␉*rcba;␊ |
| 59 | ␊ |
| 60 | ␉/* LPC on Intel ICH is always (?) at 00:1f.0 */␊ |
| 61 | ␉for(i = 1; i < sizeof(lpc_controllers) / sizeof(lpc_controllers[0]); i++)␊ |
| 62 | ␉␉if ((lpc_controllers[i].vendor == lpc_dev->vendor_id) ␊ |
| 63 | ␉␉␉&& (lpc_controllers[i].device == lpc_dev->device_id))␊ |
| 64 | ␉␉{␊ |
| 65 | ␉␉␉rcba = (void *)(pci_config_read32(lpc_dev->dev.addr, 0xF0) & 0xFFFFC000);␊ |
| 66 | ␊ |
| 67 | ␉␉␉DBG("Intel(R) %s LPC Interface [%04x:%04x], MMIO @ 0x%lx\n", ␊ |
| 68 | ␉␉␉␉lpc_controllers[i].name, lpc_dev->vendor_id, lpc_dev->device_id, rcba);␊ |
| 69 | ␊ |
| 70 | ␉␉␉if (rcba == 0)␊ |
| 71 | ␉␉␉␉printf(" RCBA disabled; cannot force enable HPET\n");␊ |
| 72 | ␉␉␉else␊ |
| 73 | ␉␉␉{␊ |
| 74 | ␉␉␉␉val = REG32(rcba, 0x3404);␊ |
| 75 | ␉␉␉␉if (val & 0x80)␊ |
| 76 | ␉␉␉␉{␊ |
| 77 | ␉␉␉␉␉// HPET is enabled in HPTC. Just not reported by BIOS␊ |
| 78 | ␉␉␉␉␉DBG(" HPET is enabled in HPTC, just not reported by BIOS\n");␊ |
| 79 | ␉␉␉␉␉hpet_address |= (val & 3) << 12 ;␊ |
| 80 | ␉␉␉␉␉DBG(" HPET MMIO @ 0x%lx\n", hpet_address);␊ |
| 81 | ␉␉␉␉}␊ |
| 82 | ␉␉␉␉else␊ |
| 83 | ␉␉␉␉{␊ |
| 84 | ␉␉␉␉␉// HPET disabled in HPTC. Trying to enable␊ |
| 85 | ␉␉␉␉␉DBG(" HPET is disabled in HPTC, trying to enable\n");␉␉␉␉␉␉␉␉␉␊ |
| 86 | ␉␉␉␉␉REG32(rcba, 0x3404) = val | 0x80;␊ |
| 87 | ␉␉␉␉␉hpet_address |= (val & 3) << 12 ;␊ |
| 88 | ␉␉␉␉␉DBG(" Force enabled HPET, MMIO @ 0x%lx\n", hpet_address);␊ |
| 89 | ␉␉␉␉}␊ |
| 90 | ␊ |
| 91 | ␉␉␉␉// verify if the job is done␊ |
| 92 | ␉␉␉␉val = REG32(rcba, 0x3404);␊ |
| 93 | ␉␉␉␉if (!(val & 0x80))␊ |
| 94 | ␉␉␉␉␉printf(" Failed to force enable HPET\n");␊ |
| 95 | ␉␉␉}␊ |
| 96 | ␉␉␉break;␊ |
| 97 | ␉␉}␊ |
| 98 | ␊ |
| 99 | #if DEBUG_HPET␊ |
| 100 | ␉printf("Press [Enter] to continue...\n");␊ |
| 101 | ␉getchar();␊ |
| 102 | #endif␊ |
| 103 | }␊ |
| 104 | |
