diff options
Diffstat (limited to 'qemu/roms/seabios/src/apm.c')
| -rw-r--r-- | qemu/roms/seabios/src/apm.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/qemu/roms/seabios/src/apm.c b/qemu/roms/seabios/src/apm.c new file mode 100644 index 000000000..f7c2306c3 --- /dev/null +++ b/qemu/roms/seabios/src/apm.c @@ -0,0 +1,215 @@ +// Basic support for apmbios callbacks. +// +// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> +// Copyright (C) 2005 Struan Bartlett +// Copyright (C) 2004 Fabrice Bellard +// +// This file may be distributed under the terms of the GNU LGPLv3 license. + +#include "biosvar.h" // GET_GLOBAL +#include "bregs.h" // struct bregs +#include "config.h" // CONFIG_* +#include "output.h" // dprintf +#include "stacks.h" // yield_toirq +#include "util.h" // apm_shutdown +#include "x86.h" // outb + +// APM installation check +static void +handle_155300(struct bregs *regs) +{ + regs->ah = 1; // APM major version + regs->al = 2; // APM minor version + regs->bh = 'P'; + regs->bl = 'M'; + // bit 0 : 16 bit interface supported + // bit 1 : 32 bit interface supported + regs->cx = 0x03; + set_success(regs); +} + +// APM real mode interface connect +static void +handle_155301(struct bregs *regs) +{ + set_success(regs); +} + +// APM 16 bit protected mode interface connect +static void +handle_155302(struct bregs *regs) +{ + extern void entry_apm16(void); + regs->bx = (u32)entry_apm16; + regs->ax = SEG_BIOS; // 16 bit code segment base + regs->si = 0xfff0; // 16 bit code segment size + regs->cx = SEG_BIOS; // data segment address + regs->di = 0xfff0; // data segment length + set_success(regs); +} + +// APM 32 bit protected mode interface connect +static void +handle_155303(struct bregs *regs) +{ + extern void entry_apm32(void); + regs->ax = SEG_BIOS; // 32 bit code segment base + regs->ebx = (u32)entry_apm32; + regs->cx = SEG_BIOS; // 16 bit code segment base + // 32 bit code segment size (low 16 bits) + // 16 bit code segment size (high 16 bits) + regs->esi = 0xfff0fff0; + regs->dx = SEG_BIOS; // data segment address + regs->di = 0xfff0; // data segment length + set_success(regs); +} + +// APM interface disconnect +static void +handle_155304(struct bregs *regs) +{ + set_success(regs); +} + +// APM cpu idle +static void +handle_155305(struct bregs *regs) +{ + yield_toirq(); + set_success(regs); +} + +// APM cpu busy +static void +handle_155306(struct bregs *regs) +{ + set_success(regs); +} + +void +apm_shutdown(void) +{ + u16 pm1a_cnt = GET_GLOBAL(acpi_pm1a_cnt); + if (pm1a_cnt) + outw(0x2000, pm1a_cnt); + + irq_disable(); + for (;;) + hlt(); +} + +// APM Set Power State +static void +handle_155307(struct bregs *regs) +{ + if (regs->bx != 1) { + set_success(regs); + return; + } + switch (regs->cx) { + case 1: + dprintf(1, "APM standby request\n"); + break; + case 2: + dprintf(1, "APM suspend request\n"); + break; + case 3: + apm_shutdown(); + break; + } + set_success(regs); +} + +static void +handle_155308(struct bregs *regs) +{ + set_success(regs); +} + +// Get Power Status +static void +handle_15530a(struct bregs *regs) +{ + regs->bh = 0x01; // on line + regs->bl = 0xff; // unknown battery status + regs->ch = 0x80; // no system battery + regs->cl = 0xff; // unknown remaining time + regs->dx = 0xffff; // unknown remaining time + regs->si = 0x00; // zero battery + set_success(regs); +} + +#define RET_ENOEVENT 0x80 + +// Get PM Event +static void +handle_15530b(struct bregs *regs) +{ + set_code_invalid_silent(regs, RET_ENOEVENT); +} + +// APM Driver Version +static void +handle_15530e(struct bregs *regs) +{ + regs->ah = 1; + regs->al = 2; + set_success(regs); +} + +// APM Engage / Disengage +static void +handle_15530f(struct bregs *regs) +{ + set_success(regs); +} + +// APM Get Capabilities +static void +handle_155310(struct bregs *regs) +{ + regs->bl = 0; + regs->cx = 0; + set_success(regs); +} + +static void +handle_1553XX(struct bregs *regs) +{ + set_unimplemented(regs); +} + +void +handle_1553(struct bregs *regs) +{ + if (! CONFIG_APMBIOS) { + set_code_invalid(regs, RET_EUNSUPPORTED); + return; + } + + //debug_stub(regs); + switch (regs->al) { + case 0x00: handle_155300(regs); break; + case 0x01: handle_155301(regs); break; + case 0x02: handle_155302(regs); break; + case 0x03: handle_155303(regs); break; + case 0x04: handle_155304(regs); break; + case 0x05: handle_155305(regs); break; + case 0x06: handle_155306(regs); break; + case 0x07: handle_155307(regs); break; + case 0x08: handle_155308(regs); break; + case 0x0a: handle_15530a(regs); break; + case 0x0b: handle_15530b(regs); break; + case 0x0e: handle_15530e(regs); break; + case 0x0f: handle_15530f(regs); break; + case 0x10: handle_155310(regs); break; + default: handle_1553XX(regs); break; + } +} + +void VISIBLE16 VISIBLE32SEG +handle_apm(struct bregs *regs) +{ + debug_enter(regs, DEBUG_HDL_apm); + handle_1553(regs); +} |