summaryrefslogtreecommitdiff
path: root/src/arch/x86/acpigen.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/arch/x86/acpigen.c')
-rw-r--r--src/arch/x86/acpigen.c1888
1 files changed, 0 insertions, 1888 deletions
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
deleted file mode 100644
index dfc2a5adf4..0000000000
--- a/src/arch/x86/acpigen.c
+++ /dev/null
@@ -1,1888 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/* This file is part of the coreboot project. */
-
-/* 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 <lib.h>
-#include <string.h>
-#include <arch/acpigen.h>
-#include <assert.h>
-#include <console/console.h>
-#include <device/device.h>
-#include <device/pci_def.h>
-#include <device/pci_type.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_ext_op(uint8_t op)
-{
- acpigen_emit_byte(EXT_OP_PREFIX);
- acpigen_emit_byte(op);
-}
-
-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);
-}
-
-char *acpigen_write_package(int nr_el)
-{
- char *p;
- acpigen_emit_byte(PACKAGE_OP);
- acpigen_write_len_f();
- p = acpigen_get_current();
- acpigen_emit_byte(nr_el);
- return p;
-}
-
-void acpigen_write_byte(unsigned int data)
-{
- acpigen_emit_byte(BYTE_PREFIX);
- acpigen_emit_byte(data & 0xff);
-}
-
-void acpigen_write_word(unsigned int data)
-{
- acpigen_emit_byte(WORD_PREFIX);
- acpigen_emit_word(data);
-}
-
-void acpigen_write_dword(unsigned int data)
-{
- acpigen_emit_byte(DWORD_PREFIX);
- acpigen_emit_dword(data);
-}
-
-void acpigen_write_qword(uint64_t data)
-{
- acpigen_emit_byte(QWORD_PREFIX);
- acpigen_emit_dword(data & 0xffffffff);
- acpigen_emit_dword((data >> 32) & 0xffffffff);
-}
-
-void acpigen_write_zero(void)
-{
- acpigen_emit_byte(ZERO_OP);
-}
-
-void acpigen_write_one(void)
-{
- acpigen_emit_byte(ONE_OP);
-}
-
-void acpigen_write_ones(void)
-{
- acpigen_emit_byte(ONES_OP);
-}
-
-void acpigen_write_integer(uint64_t data)
-{
- if (data == 0)
- acpigen_write_zero();
- else if (data == 1)
- acpigen_write_one();
- else if (data <= 0xff)
- acpigen_write_byte((unsigned char)data);
- else if (data <= 0xffff)
- acpigen_write_word((unsigned int)data);
- else if (data <= 0xffffffff)
- acpigen_write_dword((unsigned int)data);
- else
- acpigen_write_qword(data);
-}
-
-void acpigen_write_name_zero(const char *name)
-{
- acpigen_write_name(name);
- acpigen_write_one();
-}
-
-void acpigen_write_name_one(const char *name)
-{
- acpigen_write_name(name);
- acpigen_write_zero();
-}
-
-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_integer(const char *name, uint64_t val)
-{
- acpigen_write_name(name);
- acpigen_write_integer(val);
-}
-
-void acpigen_write_name_string(const char *name, const char *string)
-{
- acpigen_write_name(name);
- acpigen_write_string(string);
-}
-
-void acpigen_write_name_unicode(const char *name, const char *string)
-{
- const size_t len = strlen(string) + 1;
- acpigen_write_name(name);
- acpigen_emit_byte(BUFFER_OP);
- acpigen_write_len_f();
- acpigen_write_integer(len);
- for (size_t i = 0; i < len; i++) {
- const char c = string[i];
- /* Simple ASCII to UTF-16 conversion, replace non ASCII characters */
- acpigen_emit_word(c >= 0 ? c : '?');
- }
- acpigen_pop_len();
-}
-
-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 ? strlen(string) : 0);
- acpigen_emit_byte('\0'); /* NUL */
-}
-
-void acpigen_write_string(const char *string)
-{
- acpigen_emit_byte(STRING_PREFIX);
- acpigen_emit_string(string);
-}
-
-void acpigen_write_coreboot_hid(enum coreboot_acpi_ids id)
-{
- char hid[9]; /* BOOTxxxx */
-
- snprintf(hid, sizeof(hid), "%.4s%04X", COREBOOT_ACPI_ID, id);
- acpigen_write_name_string("_HID", hid);
-}
-
-/*
- * 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;
- }
- acpigen_emit_byte(name[i]);
- }
-}
-
-static void acpigen_emit_double_namestring(const char *name, int dotpos)
-{
- acpigen_emit_byte(DUAL_NAME_PREFIX);
- 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;
- acpigen_emit_byte(MULTI_NAME_PREFIX);
- acpigen_emit_byte(ZERO_OP);
- 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(ZERO_OP);
- 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)
-{
- acpigen_emit_byte(NAME_OP);
- acpigen_emit_namestring(name);
-}
-
-void acpigen_write_scope(const char *name)
-{
- acpigen_emit_byte(SCOPE_OP);
- acpigen_write_len_f();
- acpigen_emit_namestring(name);
-}
-
-void acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len)
-{
-/*
- Processor (\_SB.CPcpuindex, cpuindex, pblock_addr, pblock_len)
- {
-*/
- char pscope[16];
- acpigen_emit_ext_op(PROCESSOR_OP);
- acpigen_write_len_f();
-
- snprintf(pscope, sizeof(pscope),
- CONFIG_ACPI_CPU_STRING, (unsigned int) cpuindex);
- acpigen_emit_namestring(pscope);
- acpigen_emit_byte(cpuindex);
- acpigen_emit_dword(pblock_addr);
- acpigen_emit_byte(pblock_len);
-}
-
-void acpigen_write_processor_package(const char *const name,
- const unsigned int first_core,
- const unsigned int core_count)
-{
- unsigned int i;
- char pscope[16];
-
- acpigen_write_name(name);
- acpigen_write_package(core_count);
- for (i = first_core; i < first_core + core_count; ++i) {
- snprintf(pscope, sizeof(pscope), CONFIG_ACPI_CPU_STRING, i);
- acpigen_emit_namestring(pscope);
- }
- acpigen_pop_len();
-}
-
-/* Method to notify all CPU cores */
-void acpigen_write_processor_cnot(const unsigned int number_of_cores)
-{
- int core_id;
-
- acpigen_write_method("\\_SB.CNOT", 1);
- for (core_id = 0; core_id < number_of_cores; core_id++) {
- char buffer[DEVICE_PATH_MAX];
- snprintf(buffer, sizeof(buffer), CONFIG_ACPI_CPU_STRING,
- core_id);
- acpigen_emit_byte(NOTIFY_OP);
- acpigen_emit_namestring(buffer);
- acpigen_emit_byte(ARG0_OP);
- }
- acpigen_pop_len();
-}
-
-/*
- * Generate ACPI AML code for OperationRegion
- * Arg0: Pointer to struct opregion opreg = OPREGION(rname, space, offset, len)
- * where rname is region name, space is region space, offset is region offset &
- * len is region length.
- * OperationRegion(regionname, regionspace, regionoffset, regionlength)
- */
-void acpigen_write_opregion(struct opregion *opreg)
-{
- /* OpregionOp */
- acpigen_emit_ext_op(OPREGION_OP);
- /* NameString 4 chars only */
- acpigen_emit_simple_namestring(opreg->name);
- /* RegionSpace */
- acpigen_emit_byte(opreg->regionspace);
- /* RegionOffset & RegionLen, it can be byte word or double word */
- acpigen_write_integer(opreg->regionoffset);
- acpigen_write_integer(opreg->regionlen);
-}
-
-/*
- * Generate ACPI AML code for Mutex
- * Arg0: Pointer to name of mutex
- * Arg1: Initial value of mutex
- */
-void acpigen_write_mutex(const char *name, const uint8_t flags)
-{
- /* MutexOp */
- acpigen_emit_ext_op(MUTEX_OP);
- /* NameString 4 chars only */
- acpigen_emit_simple_namestring(name);
- acpigen_emit_byte(flags);
-}
-
-void acpigen_write_acquire(const char *name, const uint16_t val)
-{
- /* AcquireOp */
- acpigen_emit_ext_op(ACQUIRE_OP);
- /* NameString 4 chars only */
- acpigen_emit_simple_namestring(name);
- acpigen_emit_word(val);
-}
-
-void acpigen_write_release(const char *name)
-{
- /* ReleaseOp */
- acpigen_emit_ext_op(RELEASE_OP);
- /* NameString 4 chars only */
- acpigen_emit_simple_namestring(name);
-}
-
-static void acpigen_write_field_length(uint32_t len)
-{
- uint8_t i, j;
- uint8_t emit[4];
-
- i = 1;
- if (len < 0x40) {
- emit[0] = len & 0x3F;
- } else {
- emit[0] = len & 0xF;
- len >>= 4;
- while (len) {
- emit[i] = len & 0xFF;
- i++;
- len >>= 8;
- }
- }
- /* Update bit 7:6 : Number of bytes followed by emit[0] */
- emit[0] |= (i - 1) << 6;
-
- for (j = 0; j < i; j++)
- acpigen_emit_byte(emit[j]);
-}
-
-static void acpigen_write_field_offset(uint32_t offset,
- uint32_t current_bit_pos)
-{
- uint32_t diff_bits;
-
- if (offset < current_bit_pos) {
- printk(BIOS_WARNING, "%s: Cannot move offset backward",
- __func__);
- return;
- }
-
- diff_bits = offset - current_bit_pos;
- /* Upper limit */
- if (diff_bits > 0xFFFFFFF) {
- printk(BIOS_WARNING, "%s: Offset very large to encode",
- __func__);
- return;
- }
-
- acpigen_emit_byte(0);
- acpigen_write_field_length(diff_bits);
-}
-
-static void acpigen_write_field_name(const char *name, uint32_t size)
-{
- acpigen_emit_simple_namestring(name);
- acpigen_write_field_length(size);
-}
-
-/*
- * Generate ACPI AML code for Field
- * Arg0: region name
- * Arg1: Pointer to struct fieldlist.
- * Arg2: no. of entries in Arg1
- * Arg3: flags which indicate filed access type, lock rule & update rule.
- * Example with fieldlist
- * struct fieldlist l[] = {
- * FIELDLIST_OFFSET(0x84),
- * FIELDLIST_NAMESTR("PMCS", 2),
- * };
- * acpigen_write_field("UART", l, ARRAY_SIZE(l), FIELD_ANYACC | FIELD_NOLOCK |
- * FIELD_PRESERVE);
- * Output:
- * Field (UART, AnyAcc, NoLock, Preserve)
- * {
- * Offset (0x84),
- * PMCS, 2
- * }
- */
-void acpigen_write_field(const char *name, const struct fieldlist *l, size_t count,
- uint8_t flags)
-{
- uint16_t i;
- uint32_t current_bit_pos = 0;
-
- /* FieldOp */
- acpigen_emit_ext_op(FIELD_OP);
- /* Package Length */
- acpigen_write_len_f();
- /* NameString 4 chars only */
- acpigen_emit_simple_namestring(name);
- /* Field Flag */
- acpigen_emit_byte(flags);
-
- for (i = 0; i < count; i++) {
- switch (l[i].type) {
- case NAME_STRING:
- acpigen_write_field_name(l[i].name, l[i].bits);
- current_bit_pos += l[i].bits;
- break;
- case OFFSET:
- acpigen_write_field_offset(l[i].bits, current_bit_pos);
- current_bit_pos = l[i].bits;
- break;
- default:
- printk(BIOS_ERR, "%s: Invalid field type 0x%X\n"
- , __func__, l[i].type);
- break;
- }
- }
- acpigen_pop_len();
-}
-
-/*
- * Generate ACPI AML code for IndexField
- * Arg0: region name
- * Arg1: Pointer to struct fieldlist.
- * Arg2: no. of entries in Arg1
- * Arg3: flags which indicate filed access type, lock rule & update rule.
- * Example with fieldlist
- * struct fieldlist l[] = {
- * FIELDLIST_OFFSET(0x84),
- * FIELDLIST_NAMESTR("PMCS", 2),
- * };
- * acpigen_write_field("IDX", "DATA" l, ARRAY_SIZE(l), FIELD_ANYACC |
- * FIELD_NOLOCK |
- * FIELD_PRESERVE);
- * Output:
- * IndexField (IDX, DATA, AnyAcc, NoLock, Preserve)
- * {
- * Offset (0x84),
- * PMCS, 2
- * }
- */
-void acpigen_write_indexfield(const char *idx, const char *data,
- struct fieldlist *l, size_t count, uint8_t flags)
-{
- uint16_t i;
- uint32_t current_bit_pos = 0;
-
- /* FieldOp */
- acpigen_emit_ext_op(INDEX_FIELD_OP);
- /* Package Length */
- acpigen_write_len_f();
- /* NameString 4 chars only */
- acpigen_emit_simple_namestring(idx);
- /* NameString 4 chars only */
- acpigen_emit_simple_namestring(data);
- /* Field Flag */
- acpigen_emit_byte(flags);
-
- for (i = 0; i < count; i++) {
- switch (l[i].type) {
- case NAME_STRING:
- acpigen_write_field_name(l[i].name, l[i].bits);
- current_bit_pos += l[i].bits;
- break;
- case OFFSET:
- acpigen_write_field_offset(l[i].bits, current_bit_pos);
- current_bit_pos = l[i].bits;
- break;
- default:
- printk(BIOS_ERR, "%s: Invalid field type 0x%X\n"
- , __func__, l[i].type);
- break;
- }
- }
- acpigen_pop_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[] = {
- /* 00000030 "0._PCT.," */
- 0x08, 0x5F, 0x50, 0x43, 0x54, 0x12, 0x2C,
- /* 00000038 "........" */
- 0x02, 0x11, 0x14, 0x0A, 0x11, 0x82, 0x0C, 0x00,
- /* 00000040 "........" */
- 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- /* 00000048 "....y..." */
- 0x00, 0x00, 0x00, 0x00, 0x79, 0x00, 0x11, 0x14,
- /* 00000050 "........" */
- 0x0A, 0x11, 0x82, 0x0C, 0x00, 0x7F, 0x00, 0x00,
- /* 00000058 "........" */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 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,
- .access_size = 0,
- .addrl = 0,
- .addrh = 0,
- };
-
- acpigen_write_name("_PTC");
- acpigen_write_package(2);
-
- /* ControlRegister */
- acpigen_write_register_resource(&addr);
-
- /* StatusRegister */
- acpigen_write_register_resource(&addr);
-
- acpigen_pop_len();
-}
-
-static void __acpigen_write_method(const char *name, uint8_t flags)
-{
- acpigen_emit_byte(METHOD_OP);
- acpigen_write_len_f();
- acpigen_emit_namestring(name);
- acpigen_emit_byte(flags);
-}
-
-/* Method (name, nargs, NotSerialized) */
-void acpigen_write_method(const char *name, int nargs)
-{
- __acpigen_write_method(name, (nargs & 7));
-}
-
-/* Method (name, nargs, Serialized) */
-void acpigen_write_method_serialized(const char *name, int nargs)
-{
- __acpigen_write_method(name, (nargs & 7) | (1 << 3));
-}
-
-void acpigen_write_device(const char *name)
-{
- acpigen_emit_ext_op(DEVICE_OP);
- acpigen_write_len_f();
- acpigen_emit_namestring(name);
-}
-
-void acpigen_write_STA(uint8_t status)
-{
- /*
- * Method (_STA, 0, NotSerialized) { Return (status) }
- */
- acpigen_write_method("_STA", 0);
- acpigen_emit_byte(RETURN_OP);
- acpigen_write_byte(status);
- acpigen_pop_len();
-}
-
-/*
- * 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);
- acpigen_emit_byte(RETURN_OP);
- /* 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);
- acpigen_emit_byte(RETURN_OP);
- /* 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(RETURN_OP);
- acpigen_emit_namestring(gnvs_tpc_limit);
- acpigen_pop_len();
-}
-
-void acpigen_write_PRW(u32 wake, u32 level)
-{
- /*
- * Name (_PRW, Package () { wake, level }
- */
- acpigen_write_name("_PRW");
- acpigen_write_package(2);
- acpigen_write_integer(wake);
- acpigen_write_integer(level);
- 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_register_resource(&cstate->resource);
- 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);
-}
-
-static void acpigen_write_register(const 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->access_size); /* Register Access Size */
- acpigen_emit_dword(addr->addrl); /* Register Address Low */
- acpigen_emit_dword(addr->addrh); /* Register Address High */
-}
-
-void acpigen_write_register_resource(const acpi_addr_t *addr)
-{
- acpigen_write_resourcetemplate_header();
- acpigen_write_register(addr);
- acpigen_write_resourcetemplate_footer();
-}
-
-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(BUFFER_OP);
- acpigen_write_len_f();
- acpigen_emit_byte(WORD_PREFIX);
- len_stack[ltop++] = acpigen_get_current();
- /* Add 2 dummy bytes for the ACPI word (keep aligned with
- the calculation in acpigen_write_resourcetemplate() below). */
- 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);
-
- /* Start counting past the 2-bytes length added in
- acpigen_write_resourcetemplate() above. */
- len = acpigen_get_current() - (p + 2);
-
- /* 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);
-}
-
-/*
- * ToUUID(uuid)
- *
- * ACPI 6.1 Section 19.6.136 table 19-385 defines a special output
- * order for the bytes that make up a UUID Buffer object.
- * UUID byte order for input:
- * aabbccdd-eeff-gghh-iijj-kkllmmnnoopp
- * UUID byte order for output:
- * ddccbbaa-ffee-hhgg-iijj-kkllmmnnoopp
- */
-#define UUID_LEN 16
-void acpigen_write_uuid(const char *uuid)
-{
- uint8_t buf[UUID_LEN];
- size_t i, order[UUID_LEN] = { 3, 2, 1, 0, 5, 4, 7, 6,
- 8, 9, 10, 11, 12, 13, 14, 15 };
-
- /* Parse UUID string into bytes */
- if (hexstrtobin(uuid, buf, UUID_LEN) < UUID_LEN)
- return;
-
- /* BufferOp */
- acpigen_emit_byte(BUFFER_OP);
- acpigen_write_len_f();
-
- /* Buffer length in bytes */
- acpigen_write_word(UUID_LEN);
-
- /* Output UUID in expected order */
- for (i = 0; i < UUID_LEN; i++)
- acpigen_emit_byte(buf[order[i]]);
-
- acpigen_pop_len();
-}
-
-/*
- * Name (_PRx, Package(One) { name })
- * ...
- * PowerResource (name, level, order)
- */
-void acpigen_write_power_res(const char *name, uint8_t level, uint16_t order,
- const char * const dev_states[], size_t dev_states_count)
-{
- size_t i;
- for (i = 0; i < dev_states_count; i++) {
- acpigen_write_name(dev_states[i]);
- acpigen_write_package(1);
- acpigen_emit_simple_namestring(name);
- acpigen_pop_len(); /* Package */
- }
-
- acpigen_emit_ext_op(POWER_RES_OP);
-
- acpigen_write_len_f();
-
- acpigen_emit_simple_namestring(name);
- acpigen_emit_byte(level);
- acpigen_emit_word(order);
-}
-
-/* Sleep (ms) */
-void acpigen_write_sleep(uint64_t sleep_ms)
-{
- acpigen_emit_ext_op(SLEEP_OP);
- acpigen_write_integer(sleep_ms);
-}
-
-void acpigen_write_store(void)
-{
- acpigen_emit_byte(STORE_OP);
-}
-
-/* Store (src, dst) */
-void acpigen_write_store_ops(uint8_t src, uint8_t dst)
-{
- acpigen_write_store();
- acpigen_emit_byte(src);
- acpigen_emit_byte(dst);
-}
-
-/* Store (src, "namestr") */
-void acpigen_write_store_op_to_namestr(uint8_t src, const char *dst)
-{
- acpigen_write_store();
- acpigen_emit_byte(src);
- acpigen_emit_namestring(dst);
-}
-
-/* Or (arg1, arg2, res) */
-void acpigen_write_or(uint8_t arg1, uint8_t arg2, uint8_t res)
-{
- acpigen_emit_byte(OR_OP);
- acpigen_emit_byte(arg1);
- acpigen_emit_byte(arg2);
- acpigen_emit_byte(res);
-}
-
-/* Xor (arg1, arg2, res) */
-void acpigen_write_xor(uint8_t arg1, uint8_t arg2, uint8_t res)
-{
- acpigen_emit_byte(XOR_OP);
- acpigen_emit_byte(arg1);
- acpigen_emit_byte(arg2);
- acpigen_emit_byte(res);
-}
-
-/* And (arg1, arg2, res) */
-void acpigen_write_and(uint8_t arg1, uint8_t arg2, uint8_t res)
-{
- acpigen_emit_byte(AND_OP);
- acpigen_emit_byte(arg1);
- acpigen_emit_byte(arg2);
- acpigen_emit_byte(res);
-}
-
-/* Not (arg, res) */
-void acpigen_write_not(uint8_t arg, uint8_t res)
-{
- acpigen_emit_byte(NOT_OP);
- acpigen_emit_byte(arg);
- acpigen_emit_byte(res);
-}
-
-/* Store (str, DEBUG) */
-void acpigen_write_debug_string(const char *str)
-{
- acpigen_write_store();
- acpigen_write_string(str);
- acpigen_emit_ext_op(DEBUG_OP);
-}
-
-/* Store (val, DEBUG) */
-void acpigen_write_debug_integer(uint64_t val)
-{
- acpigen_write_store();
- acpigen_write_integer(val);
- acpigen_emit_ext_op(DEBUG_OP);
-}
-
-/* Store (op, DEBUG) */
-void acpigen_write_debug_op(uint8_t op)
-{
- acpigen_write_store();
- acpigen_emit_byte(op);
- acpigen_emit_ext_op(DEBUG_OP);
-}
-
-void acpigen_write_if(void)
-{
- acpigen_emit_byte(IF_OP);
- acpigen_write_len_f();
-}
-
-/* If (And (arg1, arg2)) */
-void acpigen_write_if_and(uint8_t arg1, uint8_t arg2)
-{
- acpigen_write_if();
- acpigen_emit_byte(AND_OP);
- acpigen_emit_byte(arg1);
- acpigen_emit_byte(arg2);
-}
-
-/*
- * Generates ACPI code for checking if operand1 and operand2 are equal, where,
- * operand1 is ACPI op and operand2 is an integer.
- *
- * If (Lequal (op, val))
- */
-void acpigen_write_if_lequal_op_int(uint8_t op, uint64_t val)
-{
- acpigen_write_if();
- acpigen_emit_byte(LEQUAL_OP);
- acpigen_emit_byte(op);
- acpigen_write_integer(val);
-}
-
-/*
- * Generates ACPI code for checking if operand1 and operand2 are equal, where,
- * operand1 is namestring and operand2 is an integer.
- *
- * If (Lequal ("namestr", val))
- */
-void acpigen_write_if_lequal_namestr_int(const char *namestr, uint64_t val)
-{
- acpigen_write_if();
- acpigen_emit_byte(LEQUAL_OP);
- acpigen_emit_namestring(namestr);
- acpigen_write_integer(val);
-}
-
-void acpigen_write_else(void)
-{
- acpigen_emit_byte(ELSE_OP);
- acpigen_write_len_f();
-}
-
-void acpigen_write_to_buffer(uint8_t src, uint8_t dst)
-{
- acpigen_emit_byte(TO_BUFFER_OP);
- acpigen_emit_byte(src);
- acpigen_emit_byte(dst);
-}
-
-void acpigen_write_to_integer(uint8_t src, uint8_t dst)
-{
- acpigen_emit_byte(TO_INTEGER_OP);
- acpigen_emit_byte(src);
- acpigen_emit_byte(dst);
-}
-
-void acpigen_write_byte_buffer(uint8_t *arr, size_t size)
-{
- size_t i;
-
- acpigen_emit_byte(BUFFER_OP);
- acpigen_write_len_f();
- acpigen_write_integer(size);
-
- for (i = 0; i < size; i++)
- acpigen_emit_byte(arr[i]);
-
- acpigen_pop_len();
-}
-
-void acpigen_write_return_byte_buffer(uint8_t *arr, size_t size)
-{
- acpigen_emit_byte(RETURN_OP);
- acpigen_write_byte_buffer(arr, size);
-}
-
-void acpigen_write_return_singleton_buffer(uint8_t arg)
-{
- acpigen_write_return_byte_buffer(&arg, 1);
-}
-
-void acpigen_write_return_byte(uint8_t arg)
-{
- acpigen_emit_byte(RETURN_OP);
- acpigen_write_byte(arg);
-}
-
-void acpigen_write_return_integer(uint64_t arg)
-{
- acpigen_emit_byte(RETURN_OP);
- acpigen_write_integer(arg);
-}
-
-void acpigen_write_return_string(const char *arg)
-{
- acpigen_emit_byte(RETURN_OP);
- acpigen_write_string(arg);
-}
-
-void acpigen_write_upc(enum acpi_upc_type type)
-{
- acpigen_write_name("_UPC");
- acpigen_write_package(4);
- /* Connectable */
- acpigen_write_byte(type == UPC_TYPE_UNUSED ? 0 : 0xff);
- /* Type */
- acpigen_write_byte(type);
- /* Reserved0 */
- acpigen_write_zero();
- /* Reserved1 */
- acpigen_write_zero();
- acpigen_pop_len();
-}
-
-void acpigen_write_pld(const struct acpi_pld *pld)
-{
- uint8_t buf[20];
-
- if (acpi_pld_to_buffer(pld, buf, ARRAY_SIZE(buf)) < 0)
- return;
-
- acpigen_write_name("_PLD");
- acpigen_write_package(1);
- acpigen_write_byte_buffer(buf, ARRAY_SIZE(buf));
- acpigen_pop_len();
-}
-
-void acpigen_write_dsm(const char *uuid, void (**callbacks)(void *),
- size_t count, void *arg)
-{
- struct dsm_uuid id = DSM_UUID(uuid, callbacks, count, arg);
- acpigen_write_dsm_uuid_arr(&id, 1);
-}
-
-static void acpigen_write_dsm_uuid(struct dsm_uuid *id)
-{
- size_t i;
-
- /* If (LEqual (Local0, ToUUID(uuid))) */
- acpigen_write_if();
- acpigen_emit_byte(LEQUAL_OP);
- acpigen_emit_byte(LOCAL0_OP);
- acpigen_write_uuid(id->uuid);
-
- /* ToInteger (Arg2, Local1) */
- acpigen_write_to_integer(ARG2_OP, LOCAL1_OP);
-
- for (i = 0; i < id->count; i++) {
- /* If (LEqual (Local1, i)) */
- acpigen_write_if_lequal_op_int(LOCAL1_OP, i);
-
- /* Callback to write if handler. */
- if (id->callbacks[i])
- id->callbacks[i](id->arg);
-
- acpigen_pop_len(); /* If */
- }
-
- /* Default case: Return (Buffer (One) { 0x0 }) */
- acpigen_write_return_singleton_buffer(0x0);
-
- acpigen_pop_len(); /* If (LEqual (Local0, ToUUID(uuid))) */
-
-}
-
-/*
- * Generate ACPI AML code for _DSM method.
- * This function takes as input array of uuid for the device, set of callbacks
- * and argument to pass into the callbacks. Callbacks should ensure that Local0
- * and Local1 are left untouched. Use of Local2-Local7 is permitted in
- * callbacks.
- *
- * Arguments passed into _DSM method:
- * Arg0 = UUID
- * Arg1 = Revision
- * Arg2 = Function index
- * Arg3 = Function specific arguments
- *
- * AML code generated would look like:
- * Method (_DSM, 4, Serialized) {
- * ToBuffer (Arg0, Local0)
- * If (LEqual (Local0, ToUUID(uuid))) {
- * ToInteger (Arg2, Local1)
- * If (LEqual (Local1, 0)) {
- * <acpigen by callback[0]>
- * }
- * ...
- * If (LEqual (Local1, n)) {
- * <acpigen by callback[n]>
- * }
- * Return (Buffer (One) { 0x0 })
- * }
- * ...
- * If (LEqual (Local0, ToUUID(uuidn))) {
- * ...
- * }
- * Return (Buffer (One) { 0x0 })
- * }
- */
-void acpigen_write_dsm_uuid_arr(struct dsm_uuid *ids, size_t count)
-{
- size_t i;
-
- /* Method (_DSM, 4, Serialized) */
- acpigen_write_method_serialized("_DSM", 0x4);
-
- /* ToBuffer (Arg0, Local0) */
- acpigen_write_to_buffer(ARG0_OP, LOCAL0_OP);
-
- for (i = 0; i < count; i++)
- acpigen_write_dsm_uuid(&ids[i]);
-
- /* Return (Buffer (One) { 0x0 }) */
- acpigen_write_return_singleton_buffer(0x0);
-
- acpigen_pop_len(); /* Method _DSM */
-}
-
-#define CPPC_PACKAGE_NAME "\\GCPC"
-
-void acpigen_write_CPPC_package(const struct cppc_config *config)
-{
- u32 i;
- u32 max;
- switch (config->version) {
- case 1:
- max = CPPC_MAX_FIELDS_VER_1;
- break;
- case 2:
- max = CPPC_MAX_FIELDS_VER_2;
- break;
- case 3:
- max = CPPC_MAX_FIELDS_VER_3;
- break;
- default:
- printk(BIOS_ERR, "ERROR: CPPC version %u is not implemented\n",
- config->version);
- return;
- }
- acpigen_write_name(CPPC_PACKAGE_NAME);
-
- /* Adding 2 to account for length and version fields */
- acpigen_write_package(max + 2);
- acpigen_write_dword(max + 2);
-
- acpigen_write_byte(config->version);
-
- for (i = 0; i < max; ++i) {
- const acpi_addr_t *reg = &(config->regs[i]);
- if (reg->space_id == ACPI_ADDRESS_SPACE_MEMORY &&
- reg->bit_width == 32 && reg->access_size == 0) {
- acpigen_write_dword(reg->addrl);
- } else {
- acpigen_write_register_resource(reg);
- }
- }
- acpigen_pop_len();
-}
-
-void acpigen_write_CPPC_method(void)
-{
- acpigen_write_method("_CPC", 0);
- acpigen_emit_byte(RETURN_OP);
- acpigen_emit_namestring(CPPC_PACKAGE_NAME);
- acpigen_pop_len();
-}
-
-/*
- * Generate ACPI AML code for _ROM method.
- * This function takes as input ROM data and ROM length.
- *
- * The ACPI spec isn't clear about what should happen at the end of the
- * ROM. Tests showed that it shouldn't truncate, but fill the remaining
- * bytes in the returned buffer with zeros.
- *
- * Arguments passed into _DSM method:
- * Arg0 = Offset in Bytes
- * Arg1 = Bytes to return
- *
- * Example:
- * acpigen_write_rom(0xdeadbeef, 0x10000)
- *
- * AML code generated would look like:
- * Method (_ROM, 2, NotSerialized) {
- *
- * OperationRegion("ROMS", SYSTEMMEMORY, 0xdeadbeef, 0x10000)
- * Field (ROMS, AnyAcc, NoLock, Preserve)
- * {
- * Offset (0),
- * RBF0, 0x80000
- * }
- *
- * Store (Arg0, Local0)
- * Store (Arg1, Local1)
- *
- * If (LGreater (Local1, 0x1000))
- * {
- * Store (0x1000, Local1)
- * }
- *
- * Store (Local1, Local3)
- *
- * If (LGreater (Local0, 0x10000))
- * {
- * Return(Buffer(Local1){0})
- * }
- *
- * If (LGreater (Local0, 0x0f000))
- * {
- * Subtract (0x10000, Local0, Local2)
- * If (LGreater (Local1, Local2))
- * {
- * Store (Local2, Local1)
- * }
- * }
- *
- * Name (ROM1, Buffer (Local3) {0})
- *
- * Multiply (Local0, 0x08, Local0)
- * Multiply (Local1, 0x08, Local1)
- *
- * CreateField (RBF0, Local0, Local1, TMPB)
- * Store (TMPB, ROM1)
- * Return (ROM1)
- * }
- */
-
-void acpigen_write_rom(void *bios, const size_t length)
-{
- ASSERT(bios)
- ASSERT(length)
-
- /* Method (_ROM, 2, Serialized) */
- acpigen_write_method_serialized("_ROM", 2);
-
- /* OperationRegion("ROMS", SYSTEMMEMORY, current, length) */
- struct opregion opreg = OPREGION("ROMS", SYSTEMMEMORY,
- (uintptr_t)bios, length);
- acpigen_write_opregion(&opreg);
-
- struct fieldlist l[] = {
- FIELDLIST_OFFSET(0),
- FIELDLIST_NAMESTR("RBF0", 8 * length),
- };
-
- /* Field (ROMS, AnyAcc, NoLock, Preserve)
- * {
- * Offset (0),
- * RBF0, 0x80000
- * } */
- acpigen_write_field(opreg.name, l, 2, FIELD_ANYACC |
- FIELD_NOLOCK | FIELD_PRESERVE);
-
- /* Store (Arg0, Local0) */
- acpigen_write_store();
- acpigen_emit_byte(ARG0_OP);
- acpigen_emit_byte(LOCAL0_OP);
-
- /* Store (Arg1, Local1) */
- acpigen_write_store();
- acpigen_emit_byte(ARG1_OP);
- acpigen_emit_byte(LOCAL1_OP);
-
- /* ACPI SPEC requires to return at maximum 4KiB */
- /* If (LGreater (Local1, 0x1000)) */
- acpigen_write_if();
- acpigen_emit_byte(LGREATER_OP);
- acpigen_emit_byte(LOCAL1_OP);
- acpigen_write_integer(0x1000);
-
- /* Store (0x1000, Local1) */
- acpigen_write_store();
- acpigen_write_integer(0x1000);
- acpigen_emit_byte(LOCAL1_OP);
-
- /* Pop if */
- acpigen_pop_len();
-
- /* Store (Local1, Local3) */
- acpigen_write_store();
- acpigen_emit_byte(LOCAL1_OP);
- acpigen_emit_byte(LOCAL3_OP);
-
- /* If (LGreater (Local0, length)) */
- acpigen_write_if();
- acpigen_emit_byte(LGREATER_OP);
- acpigen_emit_byte(LOCAL0_OP);
- acpigen_write_integer(length);
-
- /* Return(Buffer(Local1){0}) */
- acpigen_emit_byte(RETURN_OP);
- acpigen_emit_byte(BUFFER_OP);
- acpigen_write_len_f();
- acpigen_emit_byte(LOCAL1_OP);
- acpigen_emit_byte(0);
- acpigen_pop_len();
-
- /* Pop if */
- acpigen_pop_len();
-
- /* If (LGreater (Local0, length - 4096)) */
- acpigen_write_if();
- acpigen_emit_byte(LGREATER_OP);
- acpigen_emit_byte(LOCAL0_OP);
- acpigen_write_integer(length - 4096);
-
- /* Subtract (length, Local0, Local2) */
- acpigen_emit_byte(SUBTRACT_OP);
- acpigen_write_integer(length);
- acpigen_emit_byte(LOCAL0_OP);
- acpigen_emit_byte(LOCAL2_OP);
-
- /* If (LGreater (Local1, Local2)) */
- acpigen_write_if();
- acpigen_emit_byte(LGREATER_OP);
- acpigen_emit_byte(LOCAL1_OP);
- acpigen_emit_byte(LOCAL2_OP);
-
- /* Store (Local2, Local1) */
- acpigen_write_store();
- acpigen_emit_byte(LOCAL2_OP);
- acpigen_emit_byte(LOCAL1_OP);
-
- /* Pop if */
- acpigen_pop_len();
-
- /* Pop if */
- acpigen_pop_len();
-
- /* Name (ROM1, Buffer (Local3) {0}) */
- acpigen_write_name("ROM1");
- acpigen_emit_byte(BUFFER_OP);
- acpigen_write_len_f();
- acpigen_emit_byte(LOCAL3_OP);
- acpigen_emit_byte(0);
- acpigen_pop_len();
-
- /* Multiply (Local1, 0x08, Local1) */
- acpigen_emit_byte(MULTIPLY_OP);
- acpigen_emit_byte(LOCAL1_OP);
- acpigen_write_integer(0x08);
- acpigen_emit_byte(LOCAL1_OP);
-
- /* Multiply (Local0, 0x08, Local0) */
- acpigen_emit_byte(MULTIPLY_OP);
- acpigen_emit_byte(LOCAL0_OP);
- acpigen_write_integer(0x08);
- acpigen_emit_byte(LOCAL0_OP);
-
- /* CreateField (RBF0, Local0, Local1, TMPB) */
- acpigen_emit_ext_op(CREATEFIELD_OP);
- acpigen_emit_namestring("RBF0");
- acpigen_emit_byte(LOCAL0_OP);
- acpigen_emit_byte(LOCAL1_OP);
- acpigen_emit_namestring("TMPB");
-
- /* Store (TMPB, ROM1) */
- acpigen_write_store();
- acpigen_emit_namestring("TMPB");
- acpigen_emit_namestring("ROM1");
-
- /* Return (ROM1) */
- acpigen_emit_byte(RETURN_OP);
- acpigen_emit_namestring("ROM1");
-
- /* Pop method */
- acpigen_pop_len();
-}
-
-
-/* Soc-implemented functions -- weak definitions. */
-int __weak acpigen_soc_read_rx_gpio(unsigned int gpio_num)
-{
- printk(BIOS_ERR, "ERROR: %s not implemented\n", __func__);
- acpigen_write_debug_string("read_rx_gpio not available");
- return -1;
-}
-
-int __weak acpigen_soc_get_tx_gpio(unsigned int gpio_num)
-{
- printk(BIOS_ERR, "ERROR: %s not implemented\n", __func__);
- acpigen_write_debug_string("get_tx_gpio not available");
- return -1;
-}
-
-int __weak acpigen_soc_set_tx_gpio(unsigned int gpio_num)
-{
- printk(BIOS_ERR, "ERROR: %s not implemented\n", __func__);
- acpigen_write_debug_string("set_tx_gpio not available");
- return -1;
-}
-
-int __weak acpigen_soc_clear_tx_gpio(unsigned int gpio_num)
-{
- printk(BIOS_ERR, "ERROR: %s not implemented\n", __func__);
- acpigen_write_debug_string("clear_tx_gpio not available");
- return -1;
-}
-
-/*
- * Helper functions for enabling/disabling Tx GPIOs based on the GPIO
- * polarity. These functions end up calling acpigen_soc_{set,clear}_tx_gpio to
- * make callbacks into SoC acpigen code.
- *
- * Returns 0 on success and -1 on error.
- */
-int acpigen_enable_tx_gpio(struct acpi_gpio *gpio)
-{
- if (gpio->polarity == ACPI_GPIO_ACTIVE_HIGH)
- return acpigen_soc_set_tx_gpio(gpio->pins[0]);
- else
- return acpigen_soc_clear_tx_gpio(gpio->pins[0]);
-}
-
-int acpigen_disable_tx_gpio(struct acpi_gpio *gpio)
-{
- if (gpio->polarity == ACPI_GPIO_ACTIVE_LOW)
- return acpigen_soc_set_tx_gpio(gpio->pins[0]);
- else
- return acpigen_soc_clear_tx_gpio(gpio->pins[0]);
-}
-
-void acpigen_get_rx_gpio(struct acpi_gpio *gpio)
-{
- acpigen_soc_read_rx_gpio(gpio->pins[0]);
-
- if (gpio->polarity == ACPI_GPIO_ACTIVE_LOW)
- acpigen_write_xor(LOCAL0_OP, 1, LOCAL0_OP);
-}
-
-/* refer to ACPI 6.4.3.5.3 Word Address Space Descriptor section for details */
-void acpigen_resource_word(u16 res_type, u16 gen_flags, u16 type_flags, u16 gran,
- u16 range_min, u16 range_max, u16 translation, u16 length)
-{
- acpigen_emit_byte(0x88);
- /* Byte 1+2: length (0x000d) */
- acpigen_emit_byte(0x0d);
- acpigen_emit_byte(0x00);
- /* resource type */
- acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus
- /* general flags */
- acpigen_emit_byte(gen_flags);
- /* type flags */
- // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details
- acpigen_emit_byte(type_flags);
- /* granularity, min, max, translation, length */
- acpigen_emit_word(gran);
- acpigen_emit_word(range_min);
- acpigen_emit_word(range_max);
- acpigen_emit_word(translation);
- acpigen_emit_word(length);
-}
-
-/* refer to ACPI 6.4.3.5.2 DWord Address Space Descriptor section for details */
-void acpigen_resource_dword(u16 res_type, u16 gen_flags, u16 type_flags,
- u32 gran, u32 range_min, u32 range_max, u32 translation, u32 length)
-{
- acpigen_emit_byte(0x87);
- /* Byte 1+2: length (0023) */
- acpigen_emit_byte(23);
- acpigen_emit_byte(0x00);
- /* resource type */
- acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus
- /* general flags */
- acpigen_emit_byte(gen_flags);
- /* type flags */
- // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details
- acpigen_emit_byte(type_flags);
- /* granularity, min, max, translation, length */
- acpigen_emit_dword(gran);
- acpigen_emit_dword(range_min);
- acpigen_emit_dword(range_max);
- acpigen_emit_dword(translation);
- acpigen_emit_dword(length);
-}
-
-static void acpigen_emit_qword(u64 data)
-{
- acpigen_emit_dword(data & 0xffffffff);
- acpigen_emit_dword((data >> 32) & 0xffffffff);
-}
-
-/* refer to ACPI 6.4.3.5.1 QWord Address Space Descriptor section for details */
-void acpigen_resource_qword(u16 res_type, u16 gen_flags, u16 type_flags,
- u64 gran, u64 range_min, u64 range_max, u64 translation, u64 length)
-{
- acpigen_emit_byte(0x8a);
- /* Byte 1+2: length (0x002b) */
- acpigen_emit_byte(0x2b);
- acpigen_emit_byte(0x00);
- /* resource type */
- acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus
- /* general flags */
- acpigen_emit_byte(gen_flags);
- /* type flags */
- // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details
- acpigen_emit_byte(type_flags);
- /* granularity, min, max, translation, length */
- acpigen_emit_qword(gran);
- acpigen_emit_qword(range_min);
- acpigen_emit_qword(range_max);
- acpigen_emit_qword(translation);
- acpigen_emit_qword(length);
-}
-
-void acpigen_write_ADR(uint64_t adr)
-{
- acpigen_write_name_qword("_ADR", adr);
-}
-
-void acpigen_write_ADR_pci_devfn(pci_devfn_t devfn)
-{
- /*
- * _ADR for PCI Bus is encoded as follows:
- * [63:32] - unused
- * [31:16] - device #
- * [15:0] - function #
- */
- acpigen_write_ADR(PCI_SLOT(devfn) << 16 | PCI_FUNC(devfn));
-}
-
-void acpigen_write_ADR_pci_device(const struct device *dev)
-{
- assert(dev->path.type == DEVICE_PATH_PCI);
- acpigen_write_ADR_pci_devfn(dev->path.pci.devfn);
-}