| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering |
| * 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 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. |
| */ |
| |
| /* How much nesting do we support? */ |
| #define ACPIGEN_LENSTACK_SIZE 10 |
| |
| /* |
| * If you need to change this, change acpigen_write_len_f and |
| * acpigen_pop_len |
| */ |
| |
| #define ACPIGEN_MAXLEN 0xfffff |
| |
| #include <string.h> |
| #include <arch/acpigen.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| |
| static char *gencurrent; |
| |
| char *len_stack[ACPIGEN_LENSTACK_SIZE]; |
| int ltop = 0; |
| |
| void acpigen_write_len_f(void) |
| { |
| ASSERT(ltop < (ACPIGEN_LENSTACK_SIZE - 1)) |
| len_stack[ltop++] = gencurrent; |
| acpigen_emit_byte(0); |
| acpigen_emit_byte(0); |
| acpigen_emit_byte(0); |
| } |
| |
| void acpigen_pop_len(void) |
| { |
| int len; |
| ASSERT(ltop > 0) |
| char *p = len_stack[--ltop]; |
| len = gencurrent - p; |
| ASSERT(len <= ACPIGEN_MAXLEN) |
| /* generate store length for 0xfffff max */ |
| p[0] = (0x80 | (len & 0xf)); |
| p[1] = (len >> 4 & 0xff); |
| p[2] = (len >> 12 & 0xff); |
| |
| } |
| |
| void acpigen_set_current(char *curr) |
| { |
| gencurrent = curr; |
| } |
| |
| char *acpigen_get_current(void) |
| { |
| return gencurrent; |
| } |
| |
| void acpigen_emit_byte(unsigned char b) |
| { |
| (*gencurrent++) = b; |
| } |
| |
| void acpigen_emit_word(unsigned int data) |
| { |
| acpigen_emit_byte(data & 0xff); |
| acpigen_emit_byte((data >> 8) & 0xff); |
| } |
| |
| void acpigen_emit_dword(unsigned int data) |
| { |
| acpigen_emit_byte(data & 0xff); |
| acpigen_emit_byte((data >> 8) & 0xff); |
| acpigen_emit_byte((data >> 16) & 0xff); |
| acpigen_emit_byte((data >> 24) & 0xff); |
| } |
| |
| void acpigen_write_package(int nr_el) |
| { |
| /* package op */ |
| acpigen_emit_byte(0x12); |
| acpigen_write_len_f(); |
| acpigen_emit_byte(nr_el); |
| } |
| |
| void acpigen_write_byte(unsigned int data) |
| { |
| /* byte op */ |
| acpigen_emit_byte(0xa); |
| acpigen_emit_byte(data & 0xff); |
| } |
| |
| void acpigen_write_word(unsigned int data) |
| { |
| /* word op */ |
| acpigen_emit_byte(0xb); |
| acpigen_emit_word(data); |
| } |
| |
| void acpigen_write_dword(unsigned int data) |
| { |
| /* dword op */ |
| acpigen_emit_byte(0xc); |
| acpigen_emit_dword(data); |
| } |
| |
| void acpigen_write_qword(uint64_t data) |
| { |
| /* qword op */ |
| acpigen_emit_byte(0xe); |
| acpigen_emit_dword(data & 0xffffffff); |
| acpigen_emit_dword((data >> 32) & 0xffffffff); |
| } |
| |
| void acpigen_write_name_byte(const char *name, uint8_t val) |
| { |
| acpigen_write_name(name); |
| acpigen_write_byte(val); |
| } |
| |
| void acpigen_write_name_dword(const char *name, uint32_t val) |
| { |
| acpigen_write_name(name); |
| acpigen_write_dword(val); |
| } |
| |
| void acpigen_write_name_qword(const char *name, uint64_t val) |
| { |
| acpigen_write_name(name); |
| acpigen_write_qword(val); |
| } |
| |
| void acpigen_write_name_string(const char *name, const char *string) |
| { |
| acpigen_write_name(name); |
| acpigen_write_string(string); |
| } |
| |
| void acpigen_emit_stream(const char *data, int size) |
| { |
| int i; |
| for (i = 0; i < size; i++) { |
| acpigen_emit_byte(data[i]); |
| } |
| } |
| |
| void acpigen_emit_string(const char *string) |
| { |
| acpigen_emit_stream(string, string ? 0 : strlen(string)); |
| acpigen_emit_byte('\0'); /* NUL */ |
| } |
| |
| void acpigen_write_string(const char *string) |
| { |
| acpigen_emit_byte(0x0d); |
| acpigen_emit_string(string); |
| } |
| |
| /* |
| * The naming conventions for ACPI namespace names are a bit tricky as |
| * each element has to be 4 chars wide (»All names are a fixed 32 bits.«) |
| * and »By convention, when an ASL compiler pads a name shorter than 4 |
| * characters, it is done so with trailing underscores (‘_’).«. |
| * |
| * Check sections 5.3, 18.2.2 and 18.4 of ACPI spec 3.0 for details. |
| */ |
| |
| static void acpigen_emit_simple_namestring(const char *name) { |
| int i; |
| char ud[] = "____"; |
| for (i = 0; i < 4; i++) { |
| if ((name[i] == '\0') || (name[i] == '.')) { |
| acpigen_emit_stream(ud, 4 - i); |
| break; |
| } else { |
| acpigen_emit_byte(name[i]); |
| } |
| } |
| } |
| |
| static void acpigen_emit_double_namestring(const char *name, int dotpos) { |
| /* mark dual name prefix */ |
| acpigen_emit_byte(0x2e); |
| acpigen_emit_simple_namestring(name); |
| acpigen_emit_simple_namestring(&name[dotpos + 1]); |
| } |
| |
| static void acpigen_emit_multi_namestring(const char *name) { |
| int count = 0; |
| unsigned char *pathlen; |
| /* mark multi name prefix */ |
| acpigen_emit_byte(0x2f); |
| acpigen_emit_byte(0x0); |
| pathlen = ((unsigned char *) acpigen_get_current()) - 1; |
| |
| while (name[0] != '\0') { |
| acpigen_emit_simple_namestring(name); |
| /* find end or next entity */ |
| while ((name[0] != '.') && (name[0] != '\0')) |
| name++; |
| /* forward to next */ |
| if (name[0] == '.') |
| name++; |
| count++; |
| } |
| |
| pathlen[0] = count; |
| } |
| |
| |
| void acpigen_emit_namestring(const char *namepath) { |
| int dotcount = 0, i; |
| int dotpos = 0; |
| |
| /* We can start with a '\'. */ |
| if (namepath[0] == '\\') { |
| acpigen_emit_byte('\\'); |
| namepath++; |
| } |
| |
| /* And there can be any number of '^' */ |
| while (namepath[0] == '^') { |
| acpigen_emit_byte('^'); |
| namepath++; |
| } |
| |
| /* If we have only \\ or only ^...^. Then we need to put a null |
| name (0x00). */ |
| if(namepath[0] == '\0') { |
| acpigen_emit_byte(0x00); |
| return; |
| } |
| |
| i = 0; |
| while (namepath[i] != '\0') { |
| if (namepath[i] == '.') { |
| dotcount++; |
| dotpos = i; |
| } |
| i++; |
| } |
| |
| if (dotcount == 0) { |
| acpigen_emit_simple_namestring(namepath); |
| } else if (dotcount == 1) { |
| acpigen_emit_double_namestring(namepath, dotpos); |
| } else { |
| acpigen_emit_multi_namestring(namepath); |
| } |
| } |
| |
| void acpigen_write_name(const char *name) |
| { |
| /* name op */ |
| acpigen_emit_byte(0x8); |
| acpigen_emit_namestring(name); |
| } |
| |
| void acpigen_write_scope(const char *name) |
| { |
| /* scope op */ |
| acpigen_emit_byte(0x10); |
| acpigen_write_len_f(); |
| acpigen_emit_namestring(name); |
| } |
| |
| void acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len) |
| { |
| /* |
| Processor (\_PR.CPUcpuindex, cpuindex, pblock_addr, pblock_len) |
| { |
| */ |
| char pscope[16]; |
| /* processor op */ |
| acpigen_emit_byte(0x5b); |
| acpigen_emit_byte(0x83); |
| acpigen_write_len_f(); |
| |
| snprintf(pscope, sizeof (pscope), |
| "\\_PR.CP%02d", (unsigned int) cpuindex); |
| acpigen_emit_namestring(pscope); |
| acpigen_emit_byte(cpuindex); |
| acpigen_emit_dword(pblock_addr); |
| acpigen_emit_byte(pblock_len); |
| } |
| |
| void acpigen_write_empty_PCT(void) |
| { |
| /* |
| Name (_PCT, Package (0x02) |
| { |
| ResourceTemplate () |
| { |
| Register (FFixedHW, |
| 0x00, // Bit Width |
| 0x00, // Bit Offset |
| 0x0000000000000000, // Address |
| ,) |
| }, |
| |
| ResourceTemplate () |
| { |
| Register (FFixedHW, |
| 0x00, // Bit Width |
| 0x00, // Bit Offset |
| 0x0000000000000000, // Address |
| ,) |
| } |
| }) |
| */ |
| static char stream[] = { |
| 0x08, 0x5F, 0x50, 0x43, 0x54, 0x12, 0x2C, /* 00000030 "0._PCT.," */ |
| 0x02, 0x11, 0x14, 0x0A, 0x11, 0x82, 0x0C, 0x00, /* 00000038 "........" */ |
| 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00000040 "........" */ |
| 0x00, 0x00, 0x00, 0x00, 0x79, 0x00, 0x11, 0x14, /* 00000048 "....y..." */ |
| 0x0A, 0x11, 0x82, 0x0C, 0x00, 0x7F, 0x00, 0x00, /* 00000050 "........" */ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00000058 "........" */ |
| 0x00, 0x79, 0x00 |
| }; |
| acpigen_emit_stream(stream, ARRAY_SIZE(stream)); |
| } |
| |
| void acpigen_write_empty_PTC(void) |
| { |
| /* |
| Name (_PTC, Package (0x02) |
| { |
| ResourceTemplate () |
| { |
| Register (FFixedHW, |
| 0x00, // Bit Width |
| 0x00, // Bit Offset |
| 0x0000000000000000, // Address |
| ,) |
| }, |
| |
| ResourceTemplate () |
| { |
| Register (FFixedHW, |
| 0x00, // Bit Width |
| 0x00, // Bit Offset |
| 0x0000000000000000, // Address |
| ,) |
| } |
| }) |
| */ |
| acpi_addr_t addr = { |
| .space_id = ACPI_ADDRESS_SPACE_FIXED, |
| .bit_width = 0, |
| .bit_offset = 0, |
| { |
| .resv = 0 |
| }, |
| .addrl = 0, |
| .addrh = 0, |
| }; |
| |
| acpigen_write_name("_PTC"); |
| acpigen_write_package(2); |
| |
| /* ControlRegister */ |
| acpigen_write_resourcetemplate_header(); |
| acpigen_write_register(&addr); |
| acpigen_write_resourcetemplate_footer(); |
| |
| /* StatusRegister */ |
| acpigen_write_resourcetemplate_header(); |
| acpigen_write_register(&addr); |
| acpigen_write_resourcetemplate_footer(); |
| |
| acpigen_pop_len(); |
| } |
| |
| void acpigen_write_method(const char *name, int nargs) |
| { |
| /* method op */ |
| acpigen_emit_byte(0x14); |
| acpigen_write_len_f(); |
| acpigen_emit_namestring(name); |
| acpigen_emit_byte(nargs & 7); |
| } |
| |
| void acpigen_write_device(const char *name) |
| { |
| /* device op */ |
| acpigen_emit_byte(0x5b); |
| acpigen_emit_byte(0x82); |
| acpigen_write_len_f(); |
| acpigen_emit_namestring(name); |
| } |
| |
| /* |
| * Generates a func with max supported P-states. |
| */ |
| void acpigen_write_PPC(u8 nr) |
| { |
| /* |
| Method (_PPC, 0, NotSerialized) |
| { |
| Return (nr) |
| } |
| */ |
| acpigen_write_method("_PPC", 0); |
| /* return */ |
| acpigen_emit_byte(0xa4); |
| /* arg */ |
| acpigen_write_byte(nr); |
| acpigen_pop_len(); |
| } |
| |
| /* |
| * Generates a func with max supported P-states saved |
| * in the variable PPCM. |
| */ |
| void acpigen_write_PPC_NVS(void) |
| { |
| /* |
| Method (_PPC, 0, NotSerialized) |
| { |
| Return (PPCM) |
| } |
| */ |
| acpigen_write_method("_PPC", 0); |
| /* return */ |
| acpigen_emit_byte(0xa4); |
| /* arg */ |
| acpigen_emit_namestring("PPCM"); |
| acpigen_pop_len(); |
| } |
| |
| void acpigen_write_TPC(const char *gnvs_tpc_limit) |
| { |
| /* |
| // Sample _TPC method |
| Method (_TPC, 0, NotSerialized) |
| { |
| Return (\TLVL) |
| } |
| */ |
| acpigen_write_method("_TPC", 0); |
| acpigen_emit_byte(0xa4); /* ReturnOp */ |
| acpigen_emit_namestring(gnvs_tpc_limit); |
| acpigen_pop_len(); |
| } |
| |
| void acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, |
| u32 busmLat, u32 control, u32 status) |
| { |
| acpigen_write_package(6); |
| acpigen_write_dword(coreFreq); |
| acpigen_write_dword(power); |
| acpigen_write_dword(transLat); |
| acpigen_write_dword(busmLat); |
| acpigen_write_dword(control); |
| acpigen_write_dword(status); |
| acpigen_pop_len(); |
| |
| printk(BIOS_DEBUG, "PSS: %uMHz power %u control 0x%x status 0x%x\n", |
| coreFreq, power, control, status); |
| } |
| |
| void acpigen_write_PSD_package(u32 domain, u32 numprocs, PSD_coord coordtype) |
| { |
| acpigen_write_name("_PSD"); |
| acpigen_write_package(1); |
| acpigen_write_package(5); |
| acpigen_write_byte(5); // 5 values |
| acpigen_write_byte(0); // revision 0 |
| acpigen_write_dword(domain); |
| acpigen_write_dword(coordtype); |
| acpigen_write_dword(numprocs); |
| acpigen_pop_len(); |
| acpigen_pop_len(); |
| } |
| |
| void acpigen_write_CST_package_entry(acpi_cstate_t *cstate) |
| { |
| acpigen_write_package(4); |
| acpigen_write_resourcetemplate_header(); |
| acpigen_write_register(&cstate->resource); |
| acpigen_write_resourcetemplate_footer(); |
| acpigen_write_dword(cstate->ctype); |
| acpigen_write_dword(cstate->latency); |
| acpigen_write_dword(cstate->power); |
| acpigen_pop_len(); |
| } |
| |
| void acpigen_write_CST_package(acpi_cstate_t *cstate, int nentries) |
| { |
| int i; |
| acpigen_write_name("_CST"); |
| acpigen_write_package(nentries+1); |
| acpigen_write_dword(nentries); |
| |
| for (i = 0; i < nentries; i++) |
| acpigen_write_CST_package_entry(cstate + i); |
| |
| acpigen_pop_len(); |
| } |
| |
| void acpigen_write_CSD_package(u32 domain, u32 numprocs, CSD_coord coordtype, u32 index) |
| { |
| acpigen_write_name("_CSD"); |
| acpigen_write_package(1); |
| acpigen_write_package(6); |
| acpigen_write_byte(6); // 6 values |
| acpigen_write_byte(0); // revision 0 |
| acpigen_write_dword(domain); |
| acpigen_write_dword(coordtype); |
| acpigen_write_dword(numprocs); |
| acpigen_write_dword(index); |
| acpigen_pop_len(); |
| acpigen_pop_len(); |
| } |
| |
| void acpigen_write_TSS_package(int entries, acpi_tstate_t *tstate_list) |
| { |
| /* |
| Sample _TSS package with 100% and 50% duty cycles |
| Name (_TSS, Package (0x02) |
| { |
| Package(){100, 1000, 0, 0x00, 0) |
| Package(){50, 520, 0, 0x18, 0) |
| }) |
| */ |
| int i; |
| acpi_tstate_t *tstate = tstate_list; |
| |
| acpigen_write_name("_TSS"); |
| acpigen_write_package(entries); |
| |
| for (i = 0; i < entries; i++) { |
| acpigen_write_package(5); |
| acpigen_write_dword(tstate->percent); |
| acpigen_write_dword(tstate->power); |
| acpigen_write_dword(tstate->latency); |
| acpigen_write_dword(tstate->control); |
| acpigen_write_dword(tstate->status); |
| acpigen_pop_len(); |
| tstate++; |
| } |
| |
| acpigen_pop_len(); |
| } |
| |
| void acpigen_write_TSD_package(u32 domain, u32 numprocs, PSD_coord coordtype) |
| { |
| acpigen_write_name("_TSD"); |
| acpigen_write_package(1); |
| acpigen_write_package(5); |
| acpigen_write_byte(5); // 5 values |
| acpigen_write_byte(0); // revision 0 |
| acpigen_write_dword(domain); |
| acpigen_write_dword(coordtype); |
| acpigen_write_dword(numprocs); |
| acpigen_pop_len(); |
| acpigen_pop_len(); |
| } |
| |
| |
| |
| void acpigen_write_mem32fixed(int readwrite, u32 base, u32 size) |
| { |
| /* |
| * acpi 4.0 section 6.4.3.4: 32-Bit Fixed Memory Range Descriptor |
| * Byte 0: |
| * Bit7 : 1 => big item |
| * Bit6-0: 0000110 (0x6) => 32-bit fixed memory |
| */ |
| acpigen_emit_byte(0x86); |
| /* Byte 1+2: length (0x0009) */ |
| acpigen_emit_byte(0x09); |
| acpigen_emit_byte(0x00); |
| /* bit1-7 are ignored */ |
| acpigen_emit_byte(readwrite ? 0x01 : 0x00); |
| acpigen_emit_dword(base); |
| acpigen_emit_dword(size); |
| } |
| |
| void acpigen_write_register(acpi_addr_t *addr) |
| { |
| acpigen_emit_byte(0x82); /* Register Descriptor */ |
| acpigen_emit_byte(0x0c); /* Register Length 7:0 */ |
| acpigen_emit_byte(0x00); /* Register Length 15:8 */ |
| acpigen_emit_byte(addr->space_id); /* Address Space ID */ |
| acpigen_emit_byte(addr->bit_width); /* Register Bit Width */ |
| acpigen_emit_byte(addr->bit_offset); /* Register Bit Offset */ |
| acpigen_emit_byte(addr->resv); /* Register Access Size */ |
| acpigen_emit_dword(addr->addrl); /* Register Address Low */ |
| acpigen_emit_dword(addr->addrh); /* Register Address High */ |
| } |
| |
| void acpigen_write_irq(u16 mask) |
| { |
| /* |
| * acpi 3.0b section 6.4.2.1: IRQ Descriptor |
| * Byte 0: |
| * Bit7 : 0 => small item |
| * Bit6-3: 0100 (0x4) => IRQ port descriptor |
| * Bit2-0: 010 (0x2) => 2 Bytes long |
| */ |
| acpigen_emit_byte(0x22); |
| acpigen_emit_byte(mask & 0xff); |
| acpigen_emit_byte((mask >> 8) & 0xff); |
| } |
| |
| void acpigen_write_io16(u16 min, u16 max, u8 align, u8 len, u8 decode16) |
| { |
| /* |
| * acpi 4.0 section 6.4.2.6: I/O Port Descriptor |
| * Byte 0: |
| * Bit7 : 0 => small item |
| * Bit6-3: 1000 (0x8) => I/O port descriptor |
| * Bit2-0: 111 (0x7) => 7 Bytes long |
| */ |
| acpigen_emit_byte(0x47); |
| /* Does the device decode all 16 or just 10 bits? */ |
| /* bit1-7 are ignored */ |
| acpigen_emit_byte(decode16 ? 0x01 : 0x00); |
| /* minimum base address the device may be configured for */ |
| acpigen_emit_byte(min & 0xff); |
| acpigen_emit_byte((min >> 8) & 0xff); |
| /* maximum base address the device may be configured for */ |
| acpigen_emit_byte(max & 0xff); |
| acpigen_emit_byte((max >> 8) & 0xff); |
| /* alignment for min base */ |
| acpigen_emit_byte(align & 0xff); |
| acpigen_emit_byte(len & 0xff); |
| } |
| |
| void acpigen_write_resourcetemplate_header(void) |
| { |
| /* |
| * A ResourceTemplate() is a Buffer() with a |
| * (Byte|Word|DWord) containing the length, followed by one or more |
| * resource items, terminated by the end tag. |
| * (small item 0xf, len 1) |
| */ |
| acpigen_emit_byte(0x11); /* Buffer opcode */ |
| acpigen_write_len_f(); |
| acpigen_emit_byte(0x0b); /* Word opcode */ |
| len_stack[ltop++] = acpigen_get_current(); |
| acpigen_emit_byte(0x00); |
| acpigen_emit_byte(0x00); |
| } |
| |
| void acpigen_write_resourcetemplate_footer(void) |
| { |
| char *p = len_stack[--ltop]; |
| int len; |
| /* |
| * end tag (acpi 4.0 Section 6.4.2.8) |
| * 0x79 <checksum> |
| * 0x00 is treated as a good checksum according to the spec |
| * and is what iasl generates. |
| */ |
| acpigen_emit_byte(0x79); |
| acpigen_emit_byte(0x00); |
| |
| len = gencurrent - p; |
| |
| /* patch len word */ |
| p[0] = len & 0xff; |
| p[1] = (len >> 8) & 0xff; |
| /* patch len field */ |
| acpigen_pop_len(); |
| } |
| |
| static void acpigen_add_mainboard_rsvd_mem32(void *gp, struct device *dev, |
| struct resource *res) |
| { |
| acpigen_write_mem32fixed(0, res->base, res->size); |
| } |
| |
| static void acpigen_add_mainboard_rsvd_io(void *gp, struct device *dev, |
| struct resource *res) |
| { |
| resource_t base = res->base; |
| resource_t size = res->size; |
| while (size > 0) { |
| resource_t sz = size > 255 ? 255 : size; |
| acpigen_write_io16(base, base, 0, sz, 1); |
| size -= sz; |
| base += sz; |
| } |
| } |
| |
| void acpigen_write_mainboard_resource_template(void) |
| { |
| acpigen_write_resourcetemplate_header(); |
| |
| /* Add reserved memory ranges. */ |
| search_global_resources( |
| IORESOURCE_MEM | IORESOURCE_RESERVE, |
| IORESOURCE_MEM | IORESOURCE_RESERVE, |
| acpigen_add_mainboard_rsvd_mem32, 0); |
| |
| /* Add reserved io ranges. */ |
| search_global_resources( |
| IORESOURCE_IO | IORESOURCE_RESERVE, |
| IORESOURCE_IO | IORESOURCE_RESERVE, |
| acpigen_add_mainboard_rsvd_io, 0); |
| |
| acpigen_write_resourcetemplate_footer(); |
| } |
| |
| void acpigen_write_mainboard_resources(const char *scope, const char *name) |
| { |
| acpigen_write_scope(scope); |
| acpigen_write_name(name); |
| acpigen_write_mainboard_resource_template(); |
| acpigen_pop_len(); |
| } |
| |
| static int hex2bin(const char c) |
| { |
| if (c >= 'A' && c <= 'F') |
| return c - 'A' + 10; |
| if (c >= 'a' && c <= 'f') |
| return c - 'a' + 10; |
| return c - '0'; |
| } |
| |
| void acpigen_emit_eisaid(const char *eisaid) |
| { |
| u32 compact = 0; |
| |
| /* Clamping individual values would be better but |
| there is a disagreement over what is a valid |
| EISA id, so accept anything and don't clamp, |
| parent code should create a valid EISAid. |
| */ |
| compact |= (eisaid[0] - 'A' + 1) << 26; |
| compact |= (eisaid[1] - 'A' + 1) << 21; |
| compact |= (eisaid[2] - 'A' + 1) << 16; |
| compact |= hex2bin(eisaid[3]) << 12; |
| compact |= hex2bin(eisaid[4]) << 8; |
| compact |= hex2bin(eisaid[5]) << 4; |
| compact |= hex2bin(eisaid[6]); |
| |
| acpigen_emit_byte(0xc); |
| acpigen_emit_byte((compact >> 24) & 0xff); |
| acpigen_emit_byte((compact >> 16) & 0xff); |
| acpigen_emit_byte((compact >> 8) & 0xff); |
| acpigen_emit_byte(compact & 0xff); |
| } |