Angel Pons | 182dbde | 2020-04-02 23:49:05 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 2 | |
Stefan Reinauer | 573f7d4 | 2009-07-21 21:50:34 +0000 | [diff] [blame] | 3 | #include <types.h> |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 4 | #include <console/console.h> |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 5 | #include <cpu/x86/smm.h> |
Stefan Reinauer | 7a3d095 | 2010-01-17 13:49:07 +0000 | [diff] [blame] | 6 | #include <device/pci_def.h> |
Kyösti Mälkki | 661ad46 | 2020-12-29 06:26:21 +0200 | [diff] [blame] | 7 | #include <soc/nvs.h> |
Arthur Heymans | 31312b2 | 2018-04-10 12:56:19 +0200 | [diff] [blame] | 8 | #include <southbridge/intel/common/pmutil.h> |
Stefan Reinauer | 573f7d4 | 2009-07-21 21:50:34 +0000 | [diff] [blame] | 9 | #include "i82801gx.h" |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 10 | |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 11 | /* I945 */ |
| 12 | #define SMRAM 0x9d |
| 13 | #define D_OPEN (1 << 6) |
| 14 | #define D_CLS (1 << 5) |
| 15 | #define D_LCK (1 << 4) |
| 16 | #define G_SMRANE (1 << 3) |
| 17 | #define C_BASE_SEG ((0 << 2) | (1 << 1) | (0 << 0)) |
| 18 | |
Elyes HAOUAS | 92646ea | 2020-04-04 13:43:03 +0200 | [diff] [blame] | 19 | /* While we read PMBASE dynamically in case it changed, let's initialize it with a sane value */ |
Stefan Reinauer | 573f7d4 | 2009-07-21 21:50:34 +0000 | [diff] [blame] | 20 | u16 pmbase = DEFAULT_PMBASE; |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 21 | |
Arthur Heymans | 31312b2 | 2018-04-10 12:56:19 +0200 | [diff] [blame] | 22 | void southbridge_smi_monitor(void) |
Stefan Reinauer | 573f7d4 | 2009-07-21 21:50:34 +0000 | [diff] [blame] | 23 | { |
| 24 | #define IOTRAP(x) (trap_sts & (1 << x)) |
| 25 | u32 trap_sts, trap_cycle; |
| 26 | u32 data, mask = 0; |
| 27 | int i; |
| 28 | |
| 29 | trap_sts = RCBA32(0x1e00); // TRSR - Trap Status Register |
| 30 | RCBA32(0x1e00) = trap_sts; // Clear trap(s) in TRSR |
| 31 | |
| 32 | trap_cycle = RCBA32(0x1e10); |
Arthur Heymans | 3f111b0 | 2017-03-09 12:02:52 +0100 | [diff] [blame] | 33 | for (i = 16; i < 20; i++) { |
Stefan Reinauer | 573f7d4 | 2009-07-21 21:50:34 +0000 | [diff] [blame] | 34 | if (trap_cycle & (1 << i)) |
Kyösti Mälkki | a072043 | 2022-12-03 19:35:53 +0200 | [diff] [blame] | 35 | mask |= (0xff << ((i - 16) << 3)); |
Stefan Reinauer | 573f7d4 | 2009-07-21 21:50:34 +0000 | [diff] [blame] | 36 | } |
| 37 | |
Stefan Reinauer | 573f7d4 | 2009-07-21 21:50:34 +0000 | [diff] [blame] | 38 | /* IOTRAP(3) SMI function call */ |
| 39 | if (IOTRAP(3)) { |
| 40 | if (gnvs && gnvs->smif) |
| 41 | io_trap_handler(gnvs->smif); // call function smif |
| 42 | return; |
| 43 | } |
| 44 | |
| 45 | /* IOTRAP(2) currently unused |
| 46 | * IOTRAP(1) currently unused */ |
| 47 | |
Vladimir Serbinenko | a485705 | 2014-08-31 01:09:12 +0200 | [diff] [blame] | 48 | /* IOTRAP(0) SMIC: currently unused */ |
Stefan Reinauer | 573f7d4 | 2009-07-21 21:50:34 +0000 | [diff] [blame] | 49 | |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 50 | printk(BIOS_DEBUG, " trapped io address = 0x%x\n", trap_cycle & 0xfffc); |
Arthur Heymans | 3f111b0 | 2017-03-09 12:02:52 +0100 | [diff] [blame] | 51 | for (i = 0; i < 4; i++) |
| 52 | if (IOTRAP(i)) |
| 53 | printk(BIOS_DEBUG, " TRAP = %d\n", i); |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 54 | printk(BIOS_DEBUG, " AHBE = %x\n", (trap_cycle >> 16) & 0xf); |
| 55 | printk(BIOS_DEBUG, " MASK = 0x%08x\n", mask); |
| 56 | printk(BIOS_DEBUG, " read/write: %s\n", (trap_cycle & (1 << 24)) ? "read" : "write"); |
Stefan Reinauer | 573f7d4 | 2009-07-21 21:50:34 +0000 | [diff] [blame] | 57 | |
| 58 | if (!(trap_cycle & (1 << 24))) { |
| 59 | /* Write Cycle */ |
| 60 | data = RCBA32(0x1e18); |
Stefan Reinauer | c02b4fc | 2010-03-22 11:42:32 +0000 | [diff] [blame] | 61 | printk(BIOS_DEBUG, " iotrap written data = 0x%08x\n", data); |
Stefan Reinauer | 573f7d4 | 2009-07-21 21:50:34 +0000 | [diff] [blame] | 62 | } |
| 63 | #undef IOTRAP |
| 64 | } |
| 65 | |
Arthur Heymans | 31312b2 | 2018-04-10 12:56:19 +0200 | [diff] [blame] | 66 | void southbridge_finalize_all(void) |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 67 | { |
Stefan Reinauer | debb11f | 2008-10-29 04:46:52 +0000 | [diff] [blame] | 68 | } |