Update amd/south_station/fadt.c with various fixes

This is a model fadt.c that I would like to use for updating
several other AMD platforms with after acceptance.

- Updated to match ACPI 3.0b specification and added comments
  to reflect that.
- Since smi_cmd is 0, remove commands that rely on it:
  acpi_enable, acpi_disable, & pstate_cnt
  Add comments to that effect.
- Changed preferred_pm_profile to SOHO Server (platform
  specific)
- The southstation platform is legacy free - Updated
  iapc_boot_arch and flags to reflect that.
- Added reset_register flag so that operating systems
  will actually use the reset_reg.  This is important
  on legacy free systems.
- Updated Generic Address Structures to use access_size
  name in the updated acpi.h.  Added access sizes to
  the structures where reasonable.
- Removed 64-bit x_firmware_ctl pointer to facs.  This was
  causing a fwts failure and windows-64 BSOD.
- Added bit width for pm2_cnt_blk and modified gpe0_blk bit
  to match the hardware.

Change-Id: Icf1a982aa122636d1088c8b80f53d04732b54c49
Signed-off-by: Martin L Roth <martin@se-eng.com>
Reviewed-on: http://review.coreboot.org/942
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>

1 files changed, 62 insertions, 43 deletions

diff --git a/src/mainboard/amd/south_station/fadt.c b/src/mainboard/amd/south_station/fadt.c
index 020d011fdf..f8888d33c3 100644
--- a/src/mainboard/amd/south_station/fadt.c
+++ b/src/mainboard/amd/south_station/fadt.c
@@ -30,17 +30,23 @@
 #include <device/device.h>
 #include "SBPLATFORM.h"
 
+
+/*
+ * Reference section 5.2.9 Fixed ACPI Description Table (FADT)
+ * in the ACPI 3.0b specification.
+ */
 void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 {
 	u16 val = 0;
 	acpi_header_t *header = &(fadt->header);
 
 	printk(BIOS_DEBUG, "ACPI_BLK_BASE: 0x%04x\n", ACPI_BLK_BASE);
+
 	/* Prepare the header */
 	memset((void *)fadt, 0, sizeof(acpi_fadt_t));
 	memcpy(header->signature, "FACP", 4);
-	header->length = 244;
-	header->revision = 3;
+	header->length = sizeof(acpi_fadt_t);
+	header->revision = ACPI_FADT_REV_ACPI_3_0;
 	memcpy(header->oem_id, OEM_ID, 6);
 	memcpy(header->oem_table_id, "COREBOOT", 8);
 	memcpy(header->asl_compiler_id, ASLC, 4);
@@ -48,15 +54,14 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 
 	fadt->firmware_ctrl = (u32) facs;
 	fadt->dsdt = (u32) dsdt;
-	/* 3=Workstation,4=Enterprise Server, 7=Performance Server */
-	fadt->preferred_pm_profile = 0x03;
-	fadt->sci_int = 9;
-	/* disable system management mode by setting to 0: */
-	fadt->smi_cmd = 0;
-	fadt->acpi_enable = 0xf0;
-	fadt->acpi_disable = 0xf1;
-	fadt->s4bios_req = 0x0;
-	fadt->pstate_cnt = 0xe2;
+	fadt->model = 0;		/* reserved, should be 0 ACPI 3.0 */
+	fadt->preferred_pm_profile = PM_SOHO_SERVER;
+	fadt->sci_int = 9;		/* HUDSON 1 - IRQ 09 – ACPI SCI */
+	fadt->smi_cmd = 0;		/* disable system management mode */
+	fadt->acpi_enable = 0;	/* unused if SMI_CMD = 0 */
+	fadt->acpi_disable = 0;	/* unused if SMI_CMD = 0 */
+	fadt->s4bios_req = 0;	/* unused if SMI_CMD = 0 */
+	fadt->pstate_cnt = 0;	/* unused if SMI_CMD = 0 */
 
 	val = PM1_EVT_BLK_ADDRESS;
 	WritePMIO(SB_PMIOA_REG60, AccWidthUint16, &val);
@@ -90,7 +95,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->pm2_cnt_blk = ACPI_PMA_CNT_BLK_ADDRESS;
 	fadt->pm_tmr_blk = PM1_TMR_BLK_ADDRESS;
 	fadt->gpe0_blk = GPE0_BLK_ADDRESS;
-	fadt->gpe1_blk = 0x0000;	/* we dont have gpe1 block, do we? */
+	fadt->gpe1_blk = 0;		/* No gpe1 block in hudson1 */
 
 	fadt->pm1_evt_len = 4;
 	fadt->pm1_cnt_len = 2;
@@ -103,89 +108,103 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->cst_cnt = 0xe3;
 	fadt->p_lvl2_lat = 101;
 	fadt->p_lvl3_lat = 1001;
-	fadt->flush_size = 0;
-	fadt->flush_stride = 0;
+	fadt->flush_size = 0;	/* set to 0 if WBINVD is 1 in flags */
+	fadt->flush_stride = 0;	/* set to 0 if WBINVD is 1 in flags */
 	fadt->duty_offset = 1;
 	fadt->duty_width = 3;
 	fadt->day_alrm = 0;	/* 0x7d these have to be */
 	fadt->mon_alrm = 0;	/* 0x7e added to cmos.layout */
 	fadt->century = 0;	/* 0x7f to make rtc alrm work */
-	fadt->iapc_boot_arch = 0x3;	/* See table 5-11 */
-	fadt->flags = 0x0001c1a5;/* 0x25; */
-
-	fadt->res2 = 0;
-
-	fadt->reset_reg.space_id = 1;
+	fadt->iapc_boot_arch = ACPI_FADT_LEGACY_FREE;	/* See table 5-10 */
+	fadt->res2 = 0;		/* reserved, MUST be 0 ACPI 3.0 */
+	fadt->flags = ACPI_FADT_WBINVD | /* See table 5-10 ACPI 3.0a spec */
+				ACPI_FADT_C1_SUPPORTED |
+				ACPI_FADT_SLEEP_BUTTON |
+				ACPI_FADT_S4_RTC_WAKE |
+				ACPI_FADT_32BIT_TIMER |
+				ACPI_FADT_RESET_REGISTER |
+				ACPI_FADT_PCI_EXPRESS_WAKE |
+				ACPI_FADT_S4_RTC_VALID |
+				ACPI_FADT_REMOTE_POWER_ON;
+
+	/* Format is from 5.2.3.1: Generic Address Structure */
+	/* reset_reg: see section 4.7.3.6 ACPI 3.0a spec */
+	/* 8 bit write of value 0x06 to 0xCF9 in IO space */
+	fadt->reset_reg.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0x0;
-
 	fadt->reset_value = 6;
-	fadt->x_firmware_ctl_l = (u32) facs;
+
+	fadt->res3 = 0;		/* reserved, MUST be 0 ACPI 3.0 */
+	fadt->res4 = 0;		/* reserved, MUST be 0 ACPI 3.0 */
+	fadt->res5 = 0;		/* reserved, MUST be 0 ACPI 3.0 */
+
+	fadt->x_firmware_ctl_l = 0;	/* set to 0 if firmware_ctrl is used */
 	fadt->x_firmware_ctl_h = 0;
 	fadt->x_dsdt_l = (u32) dsdt;
 	fadt->x_dsdt_h = 0;
 
-	fadt->x_pm1a_evt_blk.space_id = 1;
+	fadt->x_pm1a_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = PM1_EVT_BLK_ADDRESS;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
-	fadt->x_pm1b_evt_blk.space_id = 1;
-	fadt->x_pm1b_evt_blk.bit_width = 4;
+	fadt->x_pm1b_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
+	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 
-	fadt->x_pm1a_cnt_blk.space_id = 1;
+	fadt->x_pm1a_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm1a_cnt_blk.bit_width = 16;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = PM1_CNT_BLK_ADDRESS;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
-	fadt->x_pm1b_cnt_blk.space_id = 1;
-	fadt->x_pm1b_cnt_blk.bit_width = 2;
+	fadt->x_pm1b_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
+	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 
-	fadt->x_pm2_cnt_blk.space_id = 1;
-	fadt->x_pm2_cnt_blk.bit_width = 0;
+	fadt->x_pm2_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
+	fadt->x_pm2_cnt_blk.bit_width = 8;	/* Hudson 1 Pm2Control is 8 bits */
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_pm2_cnt_blk.addrl = ACPI_PMA_CNT_BLK_ADDRESS;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 
-	fadt->x_pm_tmr_blk.space_id = 1;
+	fadt->x_pm_tmr_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = PM1_TMR_BLK_ADDRESS;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 
-	fadt->x_gpe0_blk.space_id = 1;
-	fadt->x_gpe0_blk.bit_width = 32;
+	fadt->x_gpe0_blk.space_id = ACPI_ADDRESS_SPACE_IO;
+	fadt->x_gpe0_blk.bit_width = 64;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
 	fadt->x_gpe0_blk.addrl = GPE0_BLK_ADDRESS;
 	fadt->x_gpe0_blk.addrh = 0x0;
 
 
-	fadt->x_gpe1_blk.space_id = 1;
+	fadt->x_gpe1_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_gpe1_blk.bit_width = 0;
 	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0;
 	fadt->x_gpe1_blk.addrh = 0x0;