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-rw-r--r--src/mainboard/amd/dbm690t/acpi_tables.c755
1 files changed, 755 insertions, 0 deletions
diff --git a/src/mainboard/amd/dbm690t/acpi_tables.c b/src/mainboard/amd/dbm690t/acpi_tables.c
new file mode 100644
index 0000000000..a61db3d434
--- /dev/null
+++ b/src/mainboard/amd/dbm690t/acpi_tables.c
@@ -0,0 +1,755 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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
+ */
+
+#include <console/console.h>
+#include <string.h>
+#include <arch/acpi.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <cpu/x86/msr.h>
+#include <cpu/amd/mtrr.h>
+#include <cpu/amd/amdk8_sysconf.h>
+
+#include <arch/cpu.h>
+
+#define DUMP_ACPI_TABLES 0
+
+/*
+* Assume the max pstate number is 8
+* 0x21(33 bytes) is one package length of _PSS package
+*/
+
+#define Maxpstate 8
+#define Defpkglength 0x21
+
+#if DUMP_ACPI_TABLES == 1
+static void dump_mem(u32 start, u32 end)
+{
+
+ u32 i;
+ print_debug("dump_mem:");
+ for (i = start; i < end; i++) {
+ if ((i & 0xf) == 0) {
+ printk_debug("\n%08x:", i);
+ }
+ printk_debug(" %02x", (u8)*((u8 *)i));
+ }
+ print_debug("\n");
+}
+#endif
+
+extern u8 AmlCode[];
+extern u8 AmlCode_ssdt[];
+
+#if ACPI_SSDTX_NUM >= 1
+extern u8 AmlCode_ssdt2[];
+extern u8 AmlCode_ssdt3[];
+extern u8 AmlCode_ssdt4[];
+extern u8 AmlCode_ssdt5[];
+#endif
+
+#define IO_APIC_ADDR 0xfec00000UL
+
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+ /* Just a dummy */
+ return current;
+}
+
+unsigned long acpi_fill_madt(unsigned long current)
+{
+ /* create all subtables for processors */
+ current = acpi_create_madt_lapics(current);
+
+ /* Write SB600 IOAPIC, only one */
+ current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, 2,
+ IO_APIC_ADDR, 0);
+
+ current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
+ current, 0, 0, 2, 0);
+ current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
+ current, 0, 9, 9, 0xF);
+ /* 0: mean bus 0--->ISA */
+ /* 0: PIC 0 */
+ /* 2: APIC 2 */
+ /* 5 mean: 0101 --> Edige-triggered, Active high */
+
+ /* create all subtables for processors */
+ /* current = acpi_create_madt_lapic_nmis(current, 5, 1); */
+ /* 1: LINT1 connect to NMI */
+
+ return current;
+}
+
+extern void get_bus_conf(void);
+
+extern void update_ssdt(void *ssdt);
+
+void update_ssdtx(void *ssdtx, int i)
+{
+ uint8_t *PCI;
+ uint8_t *HCIN;
+ uint8_t *UID;
+
+ PCI = ssdtx + 0x32;
+ HCIN = ssdtx + 0x39;
+ UID = ssdtx + 0x40;
+
+ if (i < 7) {
+ *PCI = (uint8_t) ('4' + i - 1);
+ } else {
+ *PCI = (uint8_t) ('A' + i - 1 - 6);
+ }
+ *HCIN = (uint8_t) i;
+ *UID = (uint8_t) (i + 3);
+
+ /* FIXME: need to update the GSI id in the ssdtx too */
+
+}
+
+/*
+* Details about this algorithm , refert to BDKG 10.5.1
+* Two parts are included, the another is the DSDT reconstruction process
+*/
+u32 pstates_algorithm(acpi_header_t * dsdt)
+{
+ u8 processor_brand[49];
+ u32 *v;
+ struct cpuid_result cpuid1;
+
+ typedef struct power_limit_encoding {
+ u8 socket_type;
+ u8 cmp_cap;
+ u8 pwr_lmt;
+ u32 power_limit;
+ };
+ u8 Max_fid, Max_vid, Start_fid, Start_vid, Min_fid, Min_vid;
+ u16 Max_feq;
+ u8 Pstate_fid[10];
+ u16 Pstate_feq[10];
+ u8 Pstate_vid[10];
+ u32 Pstate_power[10];
+ u32 Pstate_volt[10];
+ u8 PstateStep, PstateStep_coef;
+ u8 IntPstateSup;
+ u8 Pstate_num;
+ u16 Cur_feq;
+ u8 Cur_fid;
+ u8 cmp_cap, pwr_lmt;
+ u32 power_limit = 0;
+ u8 index;
+ u32 i, j;
+ u32 processor_length, scope_length;
+ msr_t msr;
+ u8 *dsdt_pointer;
+ u8 *pointer1;
+ u8 *pointer2;
+ u8 byte_index;
+ u32 old_dsdt_length, new_dsdt_length;
+ u32 corefeq, power, transitionlatency, busmasterlatency, control,
+ status;
+ u32 new_package_length;
+ u8 sum, checksum;
+ u32 fid_multiplier;
+ static struct power_limit_encoding TDP[20] = {
+ {0x11, 0x0, 0x8, 62},
+ {0x11, 0x1, 0x8, 89},
+ {0x11, 0x1, 0xa, 103},
+ {0x11, 0x1, 0xc, 125},
+ {0x11, 0x0, 0x2, 15},
+ {0x11, 0x0, 0x4, 35},
+ {0x11, 0x1, 0x2, 35},
+ {0x11, 0x0, 0x5, 45},
+ {0x11, 0x1, 0x7, 76},
+ {0x11, 0x1, 0x6, 65},
+ {0x11, 0x1, 0x8, 89},
+ {0x11, 0x0, 0x1, 8},
+ {0x11, 0x1, 0x1, 22},
+ {0x12, 0x0, 0x6, 25},
+ {0x12, 0x0, 0x1, 8},
+ {0x12, 0x0, 0x2, 9},
+ {0x12, 0x0, 0x4, 15},
+ {0x12, 0x0, 0xc, 35},
+ {0x12, 0x1, 0xc, 35},
+ {0x12, 0x1, 0x4, 20}
+ };
+
+ /* Get the Processor Brand String using cpuid(0x8000000x) command x=2,3,4 */
+ cpuid1 = cpuid(0x80000002);
+ v = (u32 *) processor_brand;
+ v[0] = cpuid1.eax;
+ v[1] = cpuid1.ebx;
+ v[2] = cpuid1.ecx;
+ v[3] = cpuid1.edx;
+ cpuid1 = cpuid(0x80000003);
+ v[4] = cpuid1.eax;
+ v[5] = cpuid1.ebx;
+ v[6] = cpuid1.ecx;
+ v[7] = cpuid1.edx;
+ cpuid1 = cpuid(0x80000004);
+ v[8] = cpuid1.eax;
+ v[9] = cpuid1.ebx;
+ v[10] = cpuid1.ecx;
+ v[11] = cpuid1.edx;
+ processor_brand[48] = 0;
+ printk_info("processor_brand=%s\n", processor_brand);
+
+ /*
+ * Based on the CPU socket type,cmp_cap and pwr_lmt , get the power limit.
+ * socket_type : 0x10 SocketF; 0x11 AM2/ASB1 ; 0x12 S1G1
+ * cmp_cap : 0x0 SingleCore ; 0x1 DualCore
+ */
+ printk_info("Pstates Algorithm ...\n");
+ cmp_cap =
+ (pci_read_config16(dev_find_slot(0, PCI_DEVFN(0x18, 3)), 0xE8) &
+ 0x3000) >> 12;
+ cpuid1 = cpuid(0x80000001);
+ pwr_lmt = ((cpuid1.ebx & 0x1C0) >> 5) | ((cpuid1.ebx & 0x4000) >> 14);
+ for (index = 0; index <= sizeof(TDP) / sizeof(TDP[0]); index++)
+ if (TDP[index].socket_type == CPU_SOCKET_TYPE &&
+ TDP[index].cmp_cap == cmp_cap &&
+ TDP[index].pwr_lmt == pwr_lmt) {
+ power_limit = TDP[index].power_limit;
+ }
+
+ /* See if the CPUID(0x80000007) returned EDX[2:1]==11b */
+ cpuid1 = cpuid(0x80000007);
+ if ((cpuid1.edx & 0x6) != 0x6) {
+ printk_info("No valid set of P-states\n");
+ return 0;
+ }
+
+ msr = rdmsr(0xc0010042);
+ Max_fid = (msr.lo & 0x3F0000) >> 16;
+ Start_fid = (msr.lo & 0x3F00) >> 8;
+ Max_vid = (msr.hi & 0x3F0000) >> 16;
+ Start_vid = (msr.hi & 0x3F00) >> 8;
+ PstateStep = (msr.hi & 0x1000000) >> 24;
+ IntPstateSup = (msr.hi & 0x20000000) >> 29;
+
+ /*
+ * The P1...P[Min+1] VID need PstateStep to calculate
+ * P[N] = P[N-1]VID + 2^PstateStep
+ * PstateStep_coef = 2^PstateStep
+ */
+ if (PstateStep == 0)
+ PstateStep_coef = 1;
+ else
+ PstateStep_coef = 2;
+
+ if (IntPstateSup == 0) {
+ printk_info("No intermediate P-states are supported\n");
+ return 0;
+ }
+
+ /*get the multipier of the fid frequency */
+ /*
+ * In RevG, 100MHz step is added
+ */
+ cpuid1 = cpuid(0x80000007);
+ fid_multiplier = ((cpuid1.edx & 0x40) >> 6) * 100;
+
+ /*
+ * Formula1: CPUFreq = FID * fid_multiplier + 800
+ * Formula2: CPUVolt = 1550 - VID * 25 (mv)
+ * Formula3: Power = (PwrLmt * P[N]Frequency*(P[N]Voltage^2))/(P[0]Frequency * P[0]Voltage^2))
+ */
+
+ /* Construct P0(P[Max]) state */
+ Pstate_num = 0;
+ Max_feq = Max_fid * fid_multiplier + 800;
+ if (Max_fid == 0x2A && Max_vid != 0x0) {
+ Min_fid = 0x2;
+ Pstate_fid[0] = Start_fid + 0xA; /* Start Frequency + 1GHz */
+ Pstate_feq[0] = Pstate_fid[0] * fid_multiplier + 800;
+ Min_vid = Start_vid;
+ Pstate_vid[0] = Max_vid + 0x2; /* Maximum Voltage - 50mV */
+ Pstate_volt[0] = 1550 - Pstate_vid[0] * 25;
+ Pstate_power[0] = power_limit * 1000; /* mw */
+ Pstate_num++;
+ } else {
+ Min_fid = Start_fid;
+ Pstate_fid[0] = Max_fid;
+ Pstate_feq[0] = Max_feq;
+ Min_vid = Start_vid;
+ Pstate_vid[0] = Max_vid + 0x2;
+ Pstate_volt[0] = 1550 - Pstate_vid[0] * 25;
+ Pstate_power[0] = power_limit * 1000; /* mw */
+ Pstate_num++;
+ }
+
+ Cur_feq = Max_feq;
+ Cur_fid = Max_fid;
+ /* Construct P1 state */
+ if (((Max_fid & 0x1) != 0) && ((Max_fid - 0x1) >= (Min_fid + 0x8))) { /* odd value */
+ Pstate_fid[1] = Max_fid - 0x1;
+ Pstate_feq[1] = Pstate_fid[1] * fid_multiplier + 800;
+ Cur_fid = Pstate_fid[1];
+ Cur_feq = Pstate_feq[1];
+ if (((Pstate_vid[0] & 0x1) != 0) && ((Pstate_vid[0] - 0x1) < Min_vid)) { /* odd value */
+ Pstate_vid[1] = Pstate_vid[0] + 0x1;
+ Pstate_volt[1] = 1550 - Pstate_vid[1] * 25;
+ Pstate_power[1] =
+ (unsigned long long)Pstate_power[0] *
+ Pstate_feq[1] * Pstate_volt[1] * Pstate_volt[1] /
+ (Pstate_feq[0] * Pstate_volt[0] * Pstate_volt[0]);
+ }
+ if (((Pstate_vid[0] & 0x1) == 0) && ((Pstate_vid[0] - 0x1) < Min_vid)) { /* even value */
+ Pstate_vid[1] = Pstate_vid[0] + PstateStep_coef;
+ Pstate_volt[1] = 1550 - Pstate_vid[1] * 25;
+ Pstate_power[1] =
+ (unsigned long long)Pstate_power[0] *
+ Pstate_feq[1] * Pstate_volt[1] * Pstate_volt[1] /
+ (Pstate_feq[0] * Pstate_volt[0] * Pstate_volt[0]);
+ }
+ Pstate_num++;
+ }
+
+ if (((Max_fid & 0x1) == 0) && ((Max_fid - 0x2) >= (Min_fid + 0x8))) { /* even value */
+ Pstate_fid[1] = Max_fid - 0x2;
+ Pstate_feq[1] = Pstate_fid[1] * fid_multiplier + 800;
+ Cur_fid = Pstate_fid[1];
+ Cur_feq = Pstate_feq[1];
+ if (((Pstate_vid[0] & 0x1) != 0) && ((Pstate_vid[0] - 0x1) < Min_vid)) { /* odd value */
+ Pstate_vid[1] = Pstate_vid[0] + 0x1;
+ Pstate_volt[1] = 1550 - Pstate_vid[1] * 25;
+ Pstate_power[1] =
+ (unsigned long long)Pstate_power[0] *
+ Pstate_feq[1] * Pstate_volt[1] * Pstate_volt[1] /
+ (Pstate_feq[0] * Pstate_volt[0] * Pstate_volt[0]);
+ }
+ if (((Pstate_vid[0] & 0x1) == 0) && ((Pstate_vid[0] - 0x1) < Min_vid)) { /* even value */
+ Pstate_vid[1] = Pstate_vid[0] + PstateStep_coef;
+ Pstate_volt[1] = 1550 - Pstate_vid[1] * 25;
+ Pstate_power[1] =
+ (unsigned long long)Pstate_power[0] *
+ Pstate_feq[1] * Pstate_volt[1] * Pstate_volt[1] /
+ (Pstate_feq[0] * Pstate_volt[0] * Pstate_volt[0]);
+ }
+
+ Pstate_num++;
+ }
+
+ /* Construct P2...P[Min-1] state */
+ Cur_fid = Cur_fid - 0x2;
+ Cur_feq = Cur_fid * fid_multiplier + 800;
+ while (Cur_feq >= ((Min_fid * fid_multiplier) + 800) * 2) {
+ Pstate_fid[Pstate_num] = Cur_fid;
+ Pstate_feq[Pstate_num] =
+ Pstate_fid[Pstate_num] * fid_multiplier + 800;
+ Cur_fid = Cur_fid - 0x2;
+ Cur_feq = Cur_fid * fid_multiplier + 800;
+ if (Pstate_vid[Pstate_num - 1] >= Min_vid) {
+ Pstate_vid[Pstate_num] = Pstate_vid[Pstate_num - 1];
+ Pstate_volt[Pstate_num] = Pstate_volt[Pstate_num - 1];
+ Pstate_power[Pstate_num] = Pstate_power[Pstate_num - 1];
+ } else {
+ Pstate_vid[Pstate_num] =
+ Pstate_vid[Pstate_num - 1] + PstateStep_coef;
+ Pstate_volt[Pstate_num] =
+ 1550 - Pstate_vid[Pstate_num] * 25;
+ Pstate_power[Pstate_num] =
+ (unsigned long long)Pstate_power[0] *
+ Pstate_feq[Pstate_num] * Pstate_volt[Pstate_num] *
+ Pstate_volt[Pstate_num] / (Pstate_feq[0] *
+ Pstate_volt[0] *
+ Pstate_volt[0]);
+ }
+ Pstate_num++;
+ }
+
+ /* Constuct P[Min] State */
+ if (Max_fid == 0x2A && Max_vid != 0x0) {
+ Pstate_fid[Pstate_num] = 0x2;
+ Pstate_feq[Pstate_num] =
+ Pstate_fid[Pstate_num] * fid_multiplier + 800;
+ Pstate_vid[Pstate_num] = Min_vid;
+ Pstate_volt[Pstate_num] = 1550 - Pstate_vid[Pstate_num] * 25;
+ Pstate_power[Pstate_num] =
+ (unsigned long long)Pstate_power[0] *
+ Pstate_feq[Pstate_num] * Pstate_volt[Pstate_num] *
+ Pstate_volt[Pstate_num] / (Pstate_feq[0] * Pstate_volt[0] *
+ Pstate_volt[0]);
+ Pstate_num++;
+ } else {
+ Pstate_fid[Pstate_num] = Start_fid;
+ Pstate_feq[Pstate_num] =
+ Pstate_fid[Pstate_num] * fid_multiplier + 800;
+ Pstate_vid[Pstate_num] = Min_vid;
+ Pstate_volt[Pstate_num] = 1550 - Pstate_vid[Pstate_num] * 25;
+ Pstate_power[Pstate_num] =
+ (unsigned long long)Pstate_power[0] *
+ Pstate_feq[Pstate_num] * Pstate_volt[Pstate_num] *
+ Pstate_volt[Pstate_num] / (Pstate_feq[0] * Pstate_volt[0] *
+ Pstate_volt[0]);
+ Pstate_num++;
+ }
+
+ /* Print Pstate feq,vid,volt,power */
+
+ for (index = 0; index < Pstate_num; index++) {
+ printk_info("Pstate_feq[%d] = %dMHz\t", index,
+ Pstate_feq[index]);
+ printk_info("Pstate_vid[%d] = %d\t", index, Pstate_vid[index]);
+ printk_info("Pstate_volt[%d] = %dmv\t", index,
+ Pstate_volt[index]);
+ printk_info("Pstate_power[%d] = %dmw\n", index,
+ Pstate_power[index]);
+ }
+
+ /*
+ * Modify the DSDT Table to put the actural _PSS package
+ * corefeq-->Pstate_feq[index] power-->Pstate_power[index] transitionlatency-->0x64 busmasterlatency-->0x7,
+ * control-->0xE8202C00| Pstate_vid[index]<<6 | Pstate_fid[index]
+ * status --> Pstate_vid[index]<<6 | Pstate_fid[index]
+ * Get the _PSS control method Sig.
+ */
+
+ dsdt_pointer = (u8 *) dsdt;
+ old_dsdt_length = dsdt->length;
+ new_dsdt_length = old_dsdt_length;
+ printk_info("DSDT reconstruction...\n");
+ for (i = 0x20; i < new_dsdt_length; i++)
+ if ((*(dsdt_pointer + i) == '_')
+ && (*(dsdt_pointer + i + 1) == 'P')
+ && (*(dsdt_pointer + i + 2) == 'S')
+ && (*(dsdt_pointer + i + 3) == 'S')) {
+
+ if ((*(dsdt_pointer + i + 4) !=
+ 0x12) | (*(dsdt_pointer + i + 5) !=
+ 0x4B) | (*(dsdt_pointer + i + 6) !=
+ 0x10)) {
+ printk_info
+ ("Error:No _PSS package leader byte!\n");
+ } else {
+ new_package_length =
+ 0x10B - Defpkglength * (Maxpstate -
+ Pstate_num);
+ /* two Pstates length will larger than 63, so we need not worry about the length */
+ if (new_package_length > 63) {
+ *(dsdt_pointer + i + 5) =
+ 0x40 | (new_package_length & 0xf);
+ *(dsdt_pointer + i + 6) =
+ (new_package_length & 0xff0) >> 4;
+ }
+ *(dsdt_pointer + i + 7) = Pstate_num;
+ }
+
+ if ((*(dsdt_pointer + i + 8) !=
+ 0x12) | (*(dsdt_pointer + i + 9) !=
+ 0x20) | (*(dsdt_pointer + i + 10) != 0x6))
+ printk_info
+ ("Error:No package leader for the first Pstate!\n");
+ for (index = 0; index < Pstate_num; index++) {
+ corefeq = Pstate_feq[index];
+ power = Pstate_power[index];
+ transitionlatency = 0x64;
+ busmasterlatency = 0x7;
+ control =
+ 0xE8202C00 | (Pstate_vid[index] << 6) |
+ Pstate_fid[index];
+ status =
+ (Pstate_vid[index] << 6) |
+ Pstate_fid[index];
+ for (byte_index = 0; byte_index < 4;
+ byte_index++) {
+ *(dsdt_pointer + i + 0xC +
+ Defpkglength * index + byte_index) =
+ corefeq >> (8 * byte_index);
+ *(dsdt_pointer + i + 0xC +
+ Defpkglength * index + 0x5 +
+ byte_index) =
+ power >> (8 * byte_index);
+ *(dsdt_pointer + i + 0xC +
+ Defpkglength * index + 0x5 * 2 +
+ byte_index) =
+ transitionlatency >> (8 * byte_index);
+ *(dsdt_pointer + i + 0xC +
+ Defpkglength * index + 0x5 * 3 +
+ byte_index) =
+ busmasterlatency >> (8 * byte_index);
+ *(dsdt_pointer + i + 0xC +
+ Defpkglength * index + 0x5 * 4 +
+ byte_index) =
+ control >> (8 * byte_index);
+ *(dsdt_pointer + i + 0xC +
+ Defpkglength * index + 0x5 * 5 +
+ byte_index) =
+ status >> (8 * byte_index);
+ }
+ }
+ pointer1 =
+ dsdt_pointer + i + 8 + Pstate_num * Defpkglength;
+ pointer2 =
+ dsdt_pointer + i + 8 + Maxpstate * Defpkglength;
+ while (pointer2 < dsdt_pointer + new_dsdt_length) {
+ *pointer1 = *pointer2;
+ pointer1++;
+ pointer2++;
+ }
+ /* Recalcute the DSDT length */
+ new_dsdt_length =
+ new_dsdt_length - Defpkglength * (Maxpstate -
+ Pstate_num);
+
+ /* Search the first processor(CPUx) item and recalculate the processor length */
+ for (j = 0; (dsdt_pointer + i - j) > dsdt_pointer; j++) {
+ if ((*(dsdt_pointer + i - j) == 'C')
+ && (*(dsdt_pointer + i - j + 1) == 'P')
+ && (*(dsdt_pointer + i - j + 2) == 'U')) {
+ processor_length =
+ ((*(dsdt_pointer + i - j - 1) << 4)
+ | (*(dsdt_pointer + i - j - 2) &
+ 0xf));
+ processor_length =
+ processor_length -
+ Defpkglength * (Maxpstate -
+ Pstate_num);
+ *(dsdt_pointer + i - j - 2) =
+ (processor_length & 0xf) | 0x40;
+ *(dsdt_pointer + i - j - 1) =
+ (processor_length & 0xff0) >> 4;
+ break;
+ }
+ }
+
+ /* Search the first scope(_PR_) item and recalculate the scope length */
+ for (j = 0; (dsdt_pointer + i - j) > dsdt_pointer; j++) {
+ if ((*(dsdt_pointer + i - j) == '_')
+ && (*(dsdt_pointer + i - j + 1) == 'P')
+ && (*(dsdt_pointer + i - j + 2) == 'R')
+ && (*(dsdt_pointer + i - j + 3) == '_')) {
+ scope_length =
+ ((*(dsdt_pointer + i - j - 1) << 4)
+ | (*(dsdt_pointer + i - j - 2) &
+ 0xf));
+ scope_length =
+ scope_length -
+ Defpkglength * (Maxpstate -
+ Pstate_num);
+ *(dsdt_pointer + i - j - 2) =
+ (scope_length & 0xf) | 0x40;
+ *(dsdt_pointer + i - j - 1) =
+ (scope_length & 0xff0) >> 4;
+ break;
+ }
+ }
+
+ }
+
+ /* Recalculate the DSDT length and fill back to the table */
+ *(dsdt_pointer + 0x4) = new_dsdt_length;
+ *(dsdt_pointer + 0x5) = new_dsdt_length >> 8;
+
+ /*
+ * Recalculate the DSDT checksum and fill back to the table
+ * We must make sure the sum of the whole table is 0
+ */
+ sum = 0;
+ for (i = 0; i < new_dsdt_length; i++)
+ if (i != 9)
+ sum = sum + *(dsdt_pointer + i);
+ checksum = 0x100 - sum;
+ *(dsdt_pointer + 0x9) = checksum;
+
+ /*Check the DSDT Table */
+ /*
+ * printk_info("The new DSDT table length is %x\n", new_dsdt_length);
+ * printk_info("Details is as below:\n");
+ * for(i=0; i< new_dsdt_length; i++){
+ * printk_info("%x\t",(unsigned char)*(dsdt_pointer+i));
+ * if( ((i+1)&0x7) == 0x0)
+ * printk_info("**0x%x**\n",i-7);
+ *}
+ */
+
+ return 1;
+
+}
+
+unsigned long write_acpi_tables(unsigned long start)
+{
+ unsigned long current;
+ acpi_rsdp_t *rsdp;
+ acpi_rsdt_t *rsdt;
+ acpi_hpet_t *hpet;
+ acpi_madt_t *madt;
+ acpi_fadt_t *fadt;
+ acpi_facs_t *facs;
+ acpi_header_t *dsdt;
+ acpi_header_t *ssdt;
+
+ get_bus_conf(); /* it will get sblk, pci1234, hcdn, and sbdn */
+
+ /* Align ACPI tables to 16byte */
+ start = (start + 0x0f) & -0x10;
+ current = start;
+
+ printk_info("ACPI: Writing ACPI tables at %lx...\n", start);
+
+ /* We need at least an RSDP and an RSDT Table */
+ rsdp = (acpi_rsdp_t *) current;
+ current += sizeof(acpi_rsdp_t);
+ rsdt = (acpi_rsdt_t *) current;
+ current += sizeof(acpi_rsdt_t);
+
+ /* clear all table memory */
+ memset((void *)start, 0, current - start);
+
+ acpi_write_rsdp(rsdp, rsdt);
+ acpi_write_rsdt(rsdt);
+
+ /*
+ * We explicitly add these tables later on:
+ */
+ /* If we want to use HPET Timers Linux wants an MADT */
+ printk_debug("ACPI: * HPET\n");
+ hpet = (acpi_hpet_t *) current;
+ current += sizeof(acpi_hpet_t);
+ acpi_create_hpet(hpet);
+ acpi_add_table(rsdt, hpet);
+
+ printk_debug("ACPI: * MADT\n");
+ madt = (acpi_madt_t *) current;
+ acpi_create_madt(madt);
+ current += madt->header.length;
+ acpi_add_table(rsdt, madt);
+
+#if 0
+ /* SRAT */
+ printk_debug("ACPI: * SRAT\n");
+ srat = (acpi_srat_t *) current;
+ acpi_create_srat(srat);
+ current += srat->header.length;
+ acpi_add_table(rsdt, srat);
+
+ /* SLIT */
+ printk_debug("ACPI: * SLIT\n");
+ slit = (acpi_slit_t *) current;
+ acpi_create_slit(slit);
+ current += slit->header.length;
+ acpi_add_table(rsdt, slit);
+#endif
+
+ /* SSDT */
+ printk_debug("ACPI: * SSDT\n");
+ ssdt = (acpi_header_t *) current;
+ current += ((acpi_header_t *) AmlCode_ssdt)->length;
+ memcpy((void *)ssdt, (void *)AmlCode_ssdt,
+ ((acpi_header_t *) AmlCode_ssdt)->length);
+ /* Here you need to set value in pci1234, sblk and sbdn in get_bus_conf.c */
+ update_ssdt((void *)ssdt);
+ /* recalculate checksum */
+ ssdt->checksum = 0;
+ ssdt->checksum = acpi_checksum((u8 *)ssdt, ssdt->length);
+ acpi_add_table(rsdt, ssdt);
+
+#if ACPI_SSDTX_NUM >= 1
+
+ /* same htio, but different position? We may have to copy, change HCIN, and recalculate the checknum and add_table */
+
+ for (i = 1; i < sysconf.hc_possible_num; i++) { /* 0: is hc sblink */
+ if ((sysconf.pci1234[i] & 1) != 1)
+ continue;
+ uint8_t c;
+ if (i < 7) {
+ c = (uint8_t) ('4' + i - 1);
+ } else {
+ c = (uint8_t) ('A' + i - 1 - 6);
+ }
+ printk_debug("ACPI: * SSDT for PCI%c Aka hcid = %d\n", c, sysconf.hcid[i]); /* pci0 and pci1 are in dsdt */
+ current = (current + 0x07) & -0x08;
+ ssdtx = (acpi_header_t *) current;
+ switch (sysconf.hcid[i]) {
+ case 1: /* 8132 */
+ p = AmlCode_ssdt2;
+ break;
+ case 2: /* 8151 */
+ p = AmlCode_ssdt3;
+ break;
+ case 3: /* 8131 */
+ p = AmlCode_ssdt4;
+ break;
+ default:
+ /* HTX no io apic */
+ p = AmlCode_ssdt5;
+ break;
+ }
+ current += ((acpi_header_t *) p)->length;
+ memcpy((void *)ssdtx, (void *)p, ((acpi_header_t *) p)->length);
+ update_ssdtx((void *)ssdtx, i);
+ ssdtx->checksum = 0;
+ ssdtx->checksum =
+ acpi_checksum((u8 *)ssdtx, ssdtx->length);
+ acpi_add_table(rsdt, ssdtx);
+ }
+#endif
+
+ /* FACS */
+ printk_debug("ACPI: * FACS\n");
+ facs = (acpi_facs_t *) current;
+ current += sizeof(acpi_facs_t);
+ acpi_create_facs(facs);
+
+ /* DSDT */
+ printk_debug("ACPI: * DSDT\n");
+ dsdt = (acpi_header_t *) current;
+ memcpy((void *)dsdt, (void *)AmlCode,
+ ((acpi_header_t *) AmlCode)->length);
+ if (!pstates_algorithm(dsdt))
+ printk_debug("pstates_algorithm error!\n");
+ else
+ printk_debug("pstates_algorithm success.\n");
+
+ current += dsdt->length;
+ printk_debug("ACPI: * DSDT @ %08x Length %x\n", dsdt, dsdt->length);
+ /* FDAT */
+ printk_debug("ACPI: * FADT\n");
+ fadt = (acpi_fadt_t *) current;
+ current += sizeof(acpi_fadt_t);
+
+ acpi_create_fadt(fadt, facs, dsdt);
+ acpi_add_table(rsdt, fadt);
+
+#if DUMP_ACPI_TABLES == 1
+ printk_debug("rsdp\n");
+ dump_mem(rsdp, ((void *)rsdp) + sizeof(acpi_rsdp_t));
+
+ printk_debug("rsdt\n");
+ dump_mem(rsdt, ((void *)rsdt) + sizeof(acpi_rsdt_t));
+
+ printk_debug("madt\n");
+ dump_mem(madt, ((void *)madt) + madt->header.length);
+
+ printk_debug("srat\n");
+ dump_mem(srat, ((void *)srat) + srat->header.length);
+
+ printk_debug("slit\n");
+ dump_mem(slit, ((void *)slit) + slit->header.length);
+
+ printk_debug("ssdt\n");
+ dump_mem(ssdt, ((void *)ssdt) + ssdt->length);
+
+ printk_debug("fadt\n");
+ dump_mem(fadt, ((void *)fadt) + fadt->header.length);
+#endif
+
+ printk_info("ACPI: done.\n");
+ return current;
+}