Following patch adds dynamic ACPI AML code generator which can be used to

generate run-time ACPI ASL code.

Moreover it demonstrates its use on Asus M2V-MX SE where the SSDT table is
generated by new function k8acpi_write_vars (technically similar to
update_ssdt). But lot of nicer.
x
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3925 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

2 files changed, 99 insertions, 1 deletions

diff --git a/src/northbridge/amd/amdk8/amdk8_acpi.c b/src/northbridge/amd/amdk8/amdk8_acpi.c
index e3709c4753..16739c4751 100644
--- a/src/northbridge/amd/amdk8/amdk8_acpi.c
+++ b/src/northbridge/amd/amdk8/amdk8_acpi.c
@@ -226,7 +226,6 @@ unsigned long acpi_fill_slit(unsigned long current)
 				p[i*nodes+j] = hops_8[i*nodes+j] * 2 + 10;
 #endif
 
-
 			}
 		}
 	}
@@ -236,6 +235,80 @@ unsigned long acpi_fill_slit(unsigned long current)
 	return current;
 }
 
+static int k8acpi_write_HT(void) {
+	device_t dev;
+	uint32_t dword;
+	int len, lenp, i;
+
+	len = acpigen_write_name("HCLK");
+	lenp = acpigen_write_package(HC_POSSIBLE_NUM);
+
+	for(i=0;i<sysconf.hc_possible_num;i++) {
+		lenp += acpigen_write_dword(sysconf.pci1234[i]);
+	}
+	for(i=sysconf.hc_possible_num; i<HC_POSSIBLE_NUM; i++) { // in case we set array size to other than 8
+		lenp += acpigen_write_dword(0x0);
+	}
+
+	acpigen_patch_len(lenp - 1);
+	len += lenp;
+
+	len += acpigen_write_name("HCDN");
+	lenp = acpigen_write_package(HC_POSSIBLE_NUM);
+
+	for(i=0;i<sysconf.hc_possible_num;i++) {
+		lenp += acpigen_write_dword(sysconf.hcdn[i]);
+	}
+	for(i=sysconf.hc_possible_num; i<HC_POSSIBLE_NUM; i++) { // in case we set array size to other than 8
+		lenp += acpigen_write_dword(0x20202020);
+	}
+	acpigen_patch_len(lenp - 1);
+	len += lenp;
+
+	return len;
+}
+
+static int k8acpi_write_pci_data(int dlen, char *name, int offset) {
+	device_t dev;
+	uint32_t dword;
+	int len, lenp, i;
+
+	dev = dev_find_slot(0, PCI_DEVFN(0x18, 1));
+
+	len = acpigen_write_name(name);
+	lenp = acpigen_write_package(dlen);
+	for(i=0; i<dlen; i++) {
+		dword = pci_read_config32(dev, offset+i*4);
+		lenp += acpigen_write_dword(dword);
+	}
+	// minus the opcode
+	acpigen_patch_len(lenp - 1);
+	return len + lenp;
+}
+
+int k8acpi_write_vars(void)
+{
+	int lens;
+	msr_t msr;
+	char pscope[] = "\\._SB_PCI0";
+
+	lens = acpigen_write_scope(pscope);
+	lens += k8acpi_write_pci_data(4, "BUSN", 0xe0);
+	lens += k8acpi_write_pci_data(8, "PCIO", 0xc0);
+	lens += k8acpi_write_pci_data(16, "MMIO", 0x80);
+	lens += acpigen_write_name_byte("SBLK", sysconf.sblk);
+	lens += acpigen_write_name_byte("CBST",
+	    ((sysconf.pci1234[0] >> 12) & 0xff) ? 0xf : 0x0);
+	lens += acpigen_write_name_dword("SBDN", sysconf.sbdn);
+	msr = rdmsr(TOP_MEM);
+	lens += acpigen_write_name_dword("TOM1", msr.lo);
+
+	lens += k8acpi_write_HT();
+	//minus opcode
+	acpigen_patch_len(lens - 1);
+	return lens;
+}
+
 // moved from mb acpi_tables.c
 static void intx_to_stream(u32 val, u32 len, u8 *dest)
 {
diff --git a/src/northbridge/amd/amdk8/amdk8_acpi.h b/src/northbridge/amd/amdk8/amdk8_acpi.h
new file mode 100644
index 0000000000..faf0474e65
--- /dev/null
+++ b/src/northbridge/amd/amdk8/amdk8_acpi.h
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2009 Rudolf Marek <r.marek@assembler.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License v2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+#ifndef AMDK8_ACPI_H
+#define AMDK8_ACPI_H
+#include <arch/acpigen.h>
+
+int k8acpi_write_vars(void);
+
+#endif