From f997b5554acd2c3ddcc9080b78a834853e59c783 Mon Sep 17 00:00:00 2001 From: Rudolf Marek Date: Sat, 14 Feb 2009 15:40:23 +0000 Subject: Following patch adds dynamically generated P-States infrastructure as well as M2V-MX SE as example how to do that. It is based on AMD code and mine code for ACPI generation. Signed-off-by: Rudolf Marek Acked-by: Peter Stuge git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3946 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/arch/i386/boot/acpigen.c | 100 +++++++++++++++++++++++++++++++++++ src/arch/i386/include/arch/acpigen.h | 5 ++ 2 files changed, 105 insertions(+) (limited to 'src/arch/i386') diff --git a/src/arch/i386/boot/acpigen.c b/src/arch/i386/boot/acpigen.c index 203f5a0f3b..6342a69572 100644 --- a/src/arch/i386/boot/acpigen.c +++ b/src/arch/i386/boot/acpigen.c @@ -136,3 +136,103 @@ int acpigen_write_scope(char *name) len = acpigen_write_len_f(); return len + acpigen_emit_stream(name, strlen(name)) + 1; } + +int acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len) +{ +/* + Processor (\_PR.CPUcpuindex, cpuindex, pblock_addr, pblock_len) + { +*/ + char pscope[16]; + int len; + /* processor op */ + acpigen_emit_byte(0x5b); + acpigen_emit_byte(0x83); + len = acpigen_write_len_f(); + + sprintf(pscope, "\\._PR_CPU%x", (unsigned int) cpuindex); + len += acpigen_emit_stream(pscope, strlen(pscope)); + acpigen_emit_byte(cpuindex); + acpigen_emit_byte(pblock_addr & 0xff); + acpigen_emit_byte((pblock_addr >> 8) & 0xff); + acpigen_emit_byte((pblock_addr >> 16) & 0xff); + acpigen_emit_byte((pblock_addr >> 24) & 0xff); + acpigen_emit_byte(pblock_len); + return 6 + 2 + len; +} + +int 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 + }; + return acpigen_emit_stream(stream, ARRAY_SIZE(stream)); +} + +/* generates a func with max supported P states */ +int acpigen_write_PPC(u8 nr) +{ +/* + Method (_PPC, 0, NotSerialized) + { + Return (nr) + } +*/ + int len; + /* method op */ + acpigen_emit_byte(0x14); + len = acpigen_write_len_f(); + len += acpigen_emit_stream("_PPC", 4); + /* no fnarg */ + acpigen_emit_byte(0x00); + /* return */ + acpigen_emit_byte(0xa4); + /* arg */ + len += acpigen_write_byte(nr); + acpigen_patch_len(len - 1); + return len + 3; +} + +int acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, u32 busmLat, + u32 control, u32 status) +{ + int len; + len = acpigen_write_package(6); + len += acpigen_write_dword(coreFreq); + len += acpigen_write_dword(power); + len += acpigen_write_dword(transLat); + len += acpigen_write_dword(busmLat); + len += acpigen_write_dword(control); + len += acpigen_write_dword(status); + //pkglen without the len opcode + acpigen_patch_len(len - 1); + return len; +} diff --git a/src/arch/i386/include/arch/acpigen.h b/src/arch/i386/include/arch/acpigen.h index 710593c005..e024f67d64 100644 --- a/src/arch/i386/include/arch/acpigen.h +++ b/src/arch/i386/include/arch/acpigen.h @@ -34,4 +34,9 @@ int acpigen_write_name(char *name); int acpigen_write_name_dword(char *name, uint32_t val); int acpigen_write_name_byte(char *name, uint8_t val); int acpigen_write_scope(char *name); +int acpigen_write_PPC(u8 nr); +int acpigen_write_empty_PCT(void); +int acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, u32 busmLat, + u32 control, u32 status); +int acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len); #endif -- cgit v1.2.3