New patch to review for coreboot: 753ee18 AMD hudson: add IMC fan control support

[WANG Siyuan]

WANG Siyuan ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4300

-gerrit

commit 753ee1862dba469801ea68b66388057dd5432463
Author: WANG Siyuan 
Date:   Mon Dec 2 10:18:04 2013 +0800

AMD hudson: add IMC fan control support

imc_reg_init: init fan control related registers.
    enable_imc_thermal_zone: AGESA does not enable thermal zone. We enable
    it here.

Change-Id: I93c729982d78b6d2c7c20bcb1a3e27a7dd0eba91
    Signed-off-by: WANG Siyuan 
    Signed-off-by: WANG Siyuan 
---
 src/southbridge/amd/agesa/hudson/Makefile.inc |  3 ++
 src/southbridge/amd/agesa/hudson/imc.c        | 70 +++++++++++++++++++++++++++
 src/southbridge/amd/agesa/hudson/imc.h        |  7 +++
 3 files changed, 80 insertions(+)

diff --git a/src/southbridge/amd/agesa/hudson/Makefile.inc b/src/southbridge/amd/agesa/hudson/Makefile.inc
index 6a097fc..54a93d2 100644
--- a/src/southbridge/amd/agesa/hudson/Makefile.inc
+++ b/src/southbridge/amd/agesa/hudson/Makefile.inc
@@ -19,6 +19,9 @@ romstage-y += early_setup.c
 ramstage-$(CONFIG_HAVE_ACPI_RESUME) += spi.c
 ramstage-$(CONFIG_HAVE_ACPI_RESUME) += resume.c

+romstage-y += imc.c
+ramstage-y += imc.c
+
 # ROMSIG At ROMBASE + 0x20000:
 # +-----------+---------------+----------------+------------+
 # |0x55AA55AA |EC ROM Address |GEC ROM Address |USB3 ROM    |
diff --git a/src/southbridge/amd/agesa/hudson/imc.c b/src/southbridge/amd/agesa/hudson/imc.c
new file mode 100644
index 0000000..19fa840
--- /dev/null
+++ b/src/southbridge/amd/agesa/hudson/imc.c
@@ -0,0 +1,70 @@
+#include "imc.h"
+#include <arch/io.h>
+#include <delay.h>
+#include "Porting.h"
+#include "AGESA.h"
+#include "amdlib.h"
+#include "Fch.h"
+#include "FchCommonCfg.h"
+#include "FchPlatform.h"
+
+void imc_reg_init(void)
+{
+	/* Init Power Management Block 2 (PM2) Registers.
+	 * Check BKDG for AMD Family 16h for details. */
+	write8(ACPI_MMIO_BASE + PMIO2_BASE + 0x00, 0x06);
+	write8(ACPI_MMIO_BASE + PMIO2_BASE + 0x01, 0x06);
+	write8(ACPI_MMIO_BASE + PMIO2_BASE + 0x02, 0xf7);
+	write8(ACPI_MMIO_BASE + PMIO2_BASE + 0x03, 0xff);
+	write8(ACPI_MMIO_BASE + PMIO2_BASE + 0x04, 0xff);
+
+#if !CONFIG_SOUTHBRIDGE_AMD_AGESA_YANGTZE
+	write8(ACPI_MMIO_BASE + PMIO2_BASE + 0x10, 0x06);
+	write8(ACPI_MMIO_BASE + PMIO2_BASE + 0x11, 0x06);
+	write8(ACPI_MMIO_BASE + PMIO2_BASE + 0x12, 0xf7);
+	write8(ACPI_MMIO_BASE + PMIO2_BASE + 0x13, 0xff);
+	write8(ACPI_MMIO_BASE + PMIO2_BASE + 0x14, 0xff);
+#endif
+
+#if CONFIG_SOUTHBRIDGE_AMD_AGESA_YANGTZE
+	UINT8                         PciData;
+	PCI_ADDR                      PciAddress;
+	AMD_CONFIG_PARAMS             StdHeader;
+	PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 0x3, 0x1E4);
+	LibAmdPciRead(AccessWidth8, PciAddress, &PciData, &StdHeader);
+	PciData &= (UINT8)0x8F;
+	PciData |= 0x10;
+	LibAmdPciWrite(AccessWidth8, PciAddress, &PciData, &StdHeader);
+#endif
+}
+
+#ifndef __PRE_RAM__
+void enable_imc_thermal_zone(void)
+{
+	AMD_CONFIG_PARAMS StdHeader;
+	UINT8 FunNum;
+	UINT8 regs[9];
+	int i;
+
+	regs[0] = 0;
+	regs[1] = 0;
+	FunNum = Fun_80;
+	for (i=0; i<=1; i++)
+		WriteECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);
+	WriteECmsg(MSG_SYS_TO_IMC, AccessWidth8, &FunNum, &StdHeader);     // function number
+	WaitForEcLDN9MailboxCmdAck(&StdHeader);
+
+	for (i=2; i<=9; i++) {
+		ReadECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);
+	}
+	/* enable thermal zone 0 */
+	regs[2] |= 1;
+	regs[0] = 0;
+	regs[1] = 0;
+	FunNum = Fun_81;
+	for (i=0; i<=9; i++)
+		WriteECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);
+	WriteECmsg(MSG_SYS_TO_IMC, AccessWidth8, &FunNum, &StdHeader);     // function number
+	WaitForEcLDN9MailboxCmdAck(&StdHeader);
+}
+#endif
diff --git a/src/southbridge/amd/agesa/hudson/imc.h b/src/southbridge/amd/agesa/hudson/imc.h
new file mode 100644
index 0000000..f117ea4
--- /dev/null
+++ b/src/southbridge/amd/agesa/hudson/imc.h
@@ -0,0 +1,7 @@
+#ifndef HUDSON_IMC_H
+#define HUDSON_IMC_H
+
+void imc_reg_init(void);
+void enable_imc_thermal_zone(void);
+
+#endif