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authorAlexandru Gagniuc <mr.nuke.me@gmail.com>2014-04-20 14:36:29 -0500
committerAlexandru Gagniuc <mr.nuke.me@gmail.com>2014-04-21 21:33:01 +0200
commit86777e36b3238feaf91558b969c1794057c5ff47 (patch)
treed49b3a7bc38402738fd492a2118a7dc455a5f575
parentcf38facbd2255562cfbf2a2bc528794fafa5891a (diff)
downloadcoreboot-86777e36b3238feaf91558b969c1794057c5ff47.tar.xz
southbridge/hudson: Initialize ACPI IO ports separate of FADT
The ACPI IO ports, and the respective SMI (for HAVE_SMI_HANDLER), were initialized when the FADT table was written. This works well on a cold boot, but the ACPI ports are not initialized on S3 resume, as ACPI tables are not written. This will not work on S3 resume if the default ports are not what we set them, or if AGESA sets them to some other value. To solve this, move the port configuration to southbridge chip init. Change-Id: Ib4043f0fa5e20f08d320acd12ce84d4d789cd035 Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/5559 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@gmail.com>
-rw-r--r--src/southbridge/amd/agesa/hudson/fadt.c16
-rw-r--r--src/southbridge/amd/agesa/hudson/hudson.c33
2 files changed, 33 insertions, 16 deletions
diff --git a/src/southbridge/amd/agesa/hudson/fadt.c b/src/southbridge/amd/agesa/hudson/fadt.c
index fcfbb44580..f86016ab8b 100644
--- a/src/southbridge/amd/agesa/hudson/fadt.c
+++ b/src/southbridge/amd/agesa/hudson/fadt.c
@@ -65,9 +65,6 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
fadt->preferred_pm_profile = FADT_PM_PROFILE;
fadt->sci_int = 9; /* HUDSON - IRQ 09 – ACPI SCI */
- /* We write to this port further down; configure it first */
- pm_write16(0x62, ACPI_PM1_CNT_BLK);
-
if (IS_ENABLED(CONFIG_HAVE_SMI_HANDLER)) {
fadt->smi_cmd = ACPI_SMI_CTL_PORT;
fadt->acpi_enable = ACPI_SMI_CMD_ENABLE;
@@ -75,7 +72,6 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
fadt->s4bios_req = 0; /* Not supported */
fadt->pstate_cnt = 0; /* Not supported */
fadt->cst_cnt = 0; /* Not supported */
- hudson_enable_acpi_cmd_smi();
outl(0x0, ACPI_PM1_CNT_BLK); /* clear SCI_EN */
} else {
fadt->smi_cmd = 0; /* disable system management mode */
@@ -87,18 +83,6 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
outl(0x1, ACPI_PM1_CNT_BLK); /* set SCI_EN */
}
- pm_write16(0x60, ACPI_PM_EVT_BLK);
- pm_write16(0x64, ACPI_PM_TMR_BLK);
- pm_write16(0x68, ACPI_GPE0_BLK);
- /* CpuControl is in \_PR.CPU0, 6 bytes */
- pm_write16(0x66, ACPI_CPU_CONTROL);
- pm_write16(0x6a, fadt->smi_cmd);
-
- pm_write8(0x74, 1<<0 | 1<<1 | 1<<4 | 1<<2); /* AcpiDecodeEnable, When set, SB uses
- * the contents of the PM registers at
- * index 60-6B to decode ACPI I/O address.
- * AcpiSmiEn & SmiCmdEn*/
-
fadt->pm1a_evt_blk = ACPI_PM_EVT_BLK;
fadt->pm1b_evt_blk = 0x0000;
fadt->pm1a_cnt_blk = ACPI_PM1_CNT_BLK;
diff --git a/src/southbridge/amd/agesa/hudson/hudson.c b/src/southbridge/amd/agesa/hudson/hudson.c
index 39dab23d0d..0edca6eafe 100644
--- a/src/southbridge/amd/agesa/hudson/hudson.c
+++ b/src/southbridge/amd/agesa/hudson/hudson.c
@@ -29,6 +29,7 @@
#include <cbmem.h>
#include "hudson.h"
#include "smbus.h"
+#include "smi.h"
/* Offsets from ACPI_MMIO_BASE
* This is defined by AGESA, but we don't include AGESA headers to avoid
@@ -129,7 +130,39 @@ unsigned long get_top_of_ram(void)
}
#endif
+static void hudson_init_acpi_ports(void)
+{
+ /* We use some of these ports in SMM regardless of whether or not
+ * ACPI tables are generated. Enable these ports indiscriminately.
+ */
+
+ pm_write16(0x60, ACPI_PM_EVT_BLK);
+ pm_write16(0x62, ACPI_PM1_CNT_BLK);
+ pm_write16(0x64, ACPI_PM_TMR_BLK);
+ pm_write16(0x68, ACPI_GPE0_BLK);
+ /* CpuControl is in \_PR.CPU0, 6 bytes */
+ pm_write16(0x66, ACPI_CPU_CONTROL);
+
+ if (IS_ENABLED(CONFIG_HAVE_SMI_HANDLER)) {
+ pm_write16(0x6a, ACPI_SMI_CTL_PORT);
+ hudson_enable_acpi_cmd_smi();
+ } else {
+ pm_write16(0x6a, 0);
+ }
+
+ /* AcpiDecodeEnable, When set, SB uses the contents of the PM registers
+ * at index 60-6B to decode ACPI I/O address. AcpiSmiEn & SmiCmdEn
+ */
+ pm_write8(0x74, 1<<0 | 1<<1 | 1<<4 | 1<<2);
+}
+
+static void hudson_init(void *chip_info)
+{
+ hudson_init_acpi_ports();
+}
+
struct chip_operations southbridge_amd_agesa_hudson_ops = {
CHIP_NAME("ATI HUDSON")
.enable_dev = hudson_enable,
+ .init = hudson_init
};