grub/kern/i386/coreboot/init.c

162 lines
3.9 KiB
C
Raw Normal View History

/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2004,2005,2006,2007,2008 Free Software Foundation, Inc.
*
* GRUB 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, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/kernel.h>
#include <grub/mm.h>
#include <grub/machine/time.h>
#include <grub/machine/init.h>
#include <grub/machine/memory.h>
#include <grub/machine/console.h>
#include <grub/machine/kernel.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/loader.h>
#include <grub/env.h>
#include <grub/cache.h>
#include <grub/time.h>
#include <grub/symbol.h>
#include <grub/cpu/io.h>
2008-08-14 Robert Millan <rmh@aybabtu.com> * conf/common.rmk (bin_UTILITIES): Add `grub-mkelfimage'. (grub_mkelfimage_SOURCES): New variable. (util/elf/grub-mkimage.c_DEPENDENCIES): Likewise. * conf/i386-coreboot.rmk (bin_UTILITIES, grub_mkimage_SOURCES) (grub_mkimage_LDFLAGS, util/elf/grub-mkimage.c_DEPENDENCIES): Remove. * conf/powerpc-ieee1275.rmk: Likewise. * conf/i386-ieee1275.rmk: Likewise. * kern/ieee1275/init.c: Include `<grub/cpu/kernel.h>'. * kern/i386/coreboot/init.c: Likewise. * kern/i386/ieee1275/startup.S: Replace `<grub/machine/kernel.h>' with `<grub/cpu/kernel.h>'. (GRUB_KERNEL_MACHINE_PREFIX, GRUB_KERNEL_MACHINE_DATA_END): Renamed to ... (GRUB_KERNEL_CPU_PREFIX, GRUB_KERNEL_CPU_DATA_END): ... this. * kern/i386/coreboot/startup.S: Likewise. * include/grub/powerpc/ieee1275/kernel.h (GRUB_MOD_ALIGN) (GRUB_MOD_GAP): Remove. * include/grub/powerpc/kernel.h: New file. * include/grub/i386/ieee1275/kernel.h (GRUB_KERNEL_MACHINE_PREFIX) (GRUB_KERNEL_MACHINE_DATA_END): Remove. * include/grub/i386/kernel.h: New file. * include/grub/i386/coreboot/kernel.h (GRUB_MOD_ALIGN) (GRUB_MOD_GAP, GRUB_KERNEL_MACHINE_PREFIX) (GRUB_KERNEL_MACHINE_DATA_END): Remove. * util/ieee1275/grub-install.in (grub_mkimage): Initialize to use `grub-mkelfimage'. Use --directory when invoking grub_mkimage. * util/elf/grub-mkimage.c: Include `<grub/cpu/kernel.h>'. (add_segments): Replace GRUB_KERNEL_MACHINE_DATA_END and GRUB_KERNEL_MACHINE_PREFIX with GRUB_KERNEL_CPU_DATA_END and GRUB_KERNEL_CPU_PREFIX.
2008-08-14 18:59:33 +00:00
#include <grub/cpu/kernel.h>
#define GRUB_FLOPPY_REG_DIGITAL_OUTPUT 0x3f2
extern char _start[];
extern char _end[];
grub_addr_t grub_os_area_addr;
grub_size_t grub_os_area_size;
grub_size_t grub_lower_mem, grub_upper_mem;
/* FIXME: we need interrupts to do this right */
static grub_uint32_t grub_time_tics = 0;
grub_uint32_t
grub_get_rtc (void)
{
return grub_time_tics;
}
/* Stop the floppy drive from spinning, so that other software is
jumped to with a known state. */
void
grub_stop_floppy (void)
{
grub_outb (0, GRUB_FLOPPY_REG_DIGITAL_OUTPUT);
}
void
grub_exit (void)
{
grub_printf ("grub_exit() is not implemented.\n");
grub_stop ();
}
void
grub_arch_sync_caches (void *address __attribute__ ((unused)),
grub_size_t len __attribute__ ((unused)))
{
}
void
grub_machine_init (void)
{
/* Initialize the console as early as possible. */
grub_console_init ();
grub_lower_mem = GRUB_MEMORY_MACHINE_LOWER_USABLE;
grub_upper_mem = 0;
2008-08-17 Robert Millan <rmh@aybabtu.com> * conf/i386-pc.rmk (kernel_img_SOURCES): Add `kern/i386/pc/mmap.c'. * include/grub/i386/pc/init.h (GRUB_MACHINE_MEMORY_AVAILABLE) (GRUB_MACHINE_MEMORY_RESERVED): New macros. (grub_machine_mmap_iterate): New function declaration. * include/grub/multiboot.h (struct grub_multiboot_mmap_entry): New structure. (GRUB_MMAP_MEMORY_AVAILABLE, GRUB_MMAP_MEMORY_RESERVED): New macros. * kern/i386/pc/init.c (grub_machine_init): Replace hardcoded region type check value with `GRUB_MACHINE_MEMORY_AVAILABLE'. Move e820 parsing from here ... * kern/i386/pc/mmap.c: New file. (grub_machine_mmap_iterate): ... to here. * include/grub/i386/coreboot/memory.h: Remove `<grub/err.h>'. (GRUB_LINUXBIOS_MEMORY_AVAILABLE): Rename (for consistency) to ... (GRUB_MACHINE_MEMORY_AVAILABLE): ... this. Update all users. (grub_available_iterate): Redeclare to return `void', and redeclare its hook to use grub_uint64_t as addr and size parameters, and rename to ... (grub_machine_mmap_iterate): ... this. Update all users. * kern/i386/coreboot/mmap.c (grub_mmap_iterate): Simplify parser loop to make it more readable. Rename to ... (grub_machine_mmap_iterate): ... this. * loader/i386/pc/multiboot.c (mmap_addr, mmap_length): New variables. (grub_get_multiboot_mmap_len, grub_fill_multiboot_mmap): New functions. (grub_multiboot): Allocate an extra region after the payload, and fill it with a Multiboot memory map. Adjust a.out loader to calculate size with the extra space. (grub_multiboot_load_elf32): Adjust elf32 loader to calculate size with the extra space.
2008-08-17 16:32:18 +00:00
auto int NESTED_FUNC_ATTR heap_init (grub_uint64_t, grub_uint64_t, grub_uint32_t);
int NESTED_FUNC_ATTR heap_init (grub_uint64_t addr, grub_uint64_t size, grub_uint32_t type)
{
#if GRUB_CPU_SIZEOF_VOID_P == 4
/* Restrict ourselves to 32-bit memory space. */
if (addr > ULONG_MAX)
{
grub_upper_mem = ULONG_MAX;
return 0;
}
if (addr + size > ULONG_MAX)
size = ULONG_MAX - addr;
#endif
grub_upper_mem = grub_max (grub_upper_mem, addr + size);
2008-08-17 Robert Millan <rmh@aybabtu.com> * conf/i386-pc.rmk (kernel_img_SOURCES): Add `kern/i386/pc/mmap.c'. * include/grub/i386/pc/init.h (GRUB_MACHINE_MEMORY_AVAILABLE) (GRUB_MACHINE_MEMORY_RESERVED): New macros. (grub_machine_mmap_iterate): New function declaration. * include/grub/multiboot.h (struct grub_multiboot_mmap_entry): New structure. (GRUB_MMAP_MEMORY_AVAILABLE, GRUB_MMAP_MEMORY_RESERVED): New macros. * kern/i386/pc/init.c (grub_machine_init): Replace hardcoded region type check value with `GRUB_MACHINE_MEMORY_AVAILABLE'. Move e820 parsing from here ... * kern/i386/pc/mmap.c: New file. (grub_machine_mmap_iterate): ... to here. * include/grub/i386/coreboot/memory.h: Remove `<grub/err.h>'. (GRUB_LINUXBIOS_MEMORY_AVAILABLE): Rename (for consistency) to ... (GRUB_MACHINE_MEMORY_AVAILABLE): ... this. Update all users. (grub_available_iterate): Redeclare to return `void', and redeclare its hook to use grub_uint64_t as addr and size parameters, and rename to ... (grub_machine_mmap_iterate): ... this. Update all users. * kern/i386/coreboot/mmap.c (grub_mmap_iterate): Simplify parser loop to make it more readable. Rename to ... (grub_machine_mmap_iterate): ... this. * loader/i386/pc/multiboot.c (mmap_addr, mmap_length): New variables. (grub_get_multiboot_mmap_len, grub_fill_multiboot_mmap): New functions. (grub_multiboot): Allocate an extra region after the payload, and fill it with a Multiboot memory map. Adjust a.out loader to calculate size with the extra space. (grub_multiboot_load_elf32): Adjust elf32 loader to calculate size with the extra space.
2008-08-17 16:32:18 +00:00
if (type != GRUB_MACHINE_MEMORY_AVAILABLE)
return 0;
/* Avoid the lower memory. */
if (addr < GRUB_MEMORY_MACHINE_LOWER_SIZE)
{
if (addr + size <= GRUB_MEMORY_MACHINE_LOWER_SIZE)
return 0;
else
{
size -= GRUB_MEMORY_MACHINE_LOWER_SIZE - addr;
addr = GRUB_MEMORY_MACHINE_LOWER_SIZE;
}
}
if (addr == GRUB_MEMORY_MACHINE_UPPER_START
|| (addr >= GRUB_MEMORY_MACHINE_LOWER_SIZE
&& addr <= GRUB_MEMORY_MACHINE_UPPER_START
&& (addr + size > GRUB_MEMORY_MACHINE_UPPER_START)))
{
grub_size_t quarter = size >> 2;
grub_os_area_addr = addr;
grub_os_area_size = size - quarter;
grub_mm_init_region ((void *) (grub_os_area_addr + grub_os_area_size),
quarter);
}
else
grub_mm_init_region ((void *) (grub_addr_t) addr, (grub_size_t) size);
return 0;
}
2008-08-17 Robert Millan <rmh@aybabtu.com> * conf/i386-pc.rmk (kernel_img_SOURCES): Add `kern/i386/pc/mmap.c'. * include/grub/i386/pc/init.h (GRUB_MACHINE_MEMORY_AVAILABLE) (GRUB_MACHINE_MEMORY_RESERVED): New macros. (grub_machine_mmap_iterate): New function declaration. * include/grub/multiboot.h (struct grub_multiboot_mmap_entry): New structure. (GRUB_MMAP_MEMORY_AVAILABLE, GRUB_MMAP_MEMORY_RESERVED): New macros. * kern/i386/pc/init.c (grub_machine_init): Replace hardcoded region type check value with `GRUB_MACHINE_MEMORY_AVAILABLE'. Move e820 parsing from here ... * kern/i386/pc/mmap.c: New file. (grub_machine_mmap_iterate): ... to here. * include/grub/i386/coreboot/memory.h: Remove `<grub/err.h>'. (GRUB_LINUXBIOS_MEMORY_AVAILABLE): Rename (for consistency) to ... (GRUB_MACHINE_MEMORY_AVAILABLE): ... this. Update all users. (grub_available_iterate): Redeclare to return `void', and redeclare its hook to use grub_uint64_t as addr and size parameters, and rename to ... (grub_machine_mmap_iterate): ... this. Update all users. * kern/i386/coreboot/mmap.c (grub_mmap_iterate): Simplify parser loop to make it more readable. Rename to ... (grub_machine_mmap_iterate): ... this. * loader/i386/pc/multiboot.c (mmap_addr, mmap_length): New variables. (grub_get_multiboot_mmap_len, grub_fill_multiboot_mmap): New functions. (grub_multiboot): Allocate an extra region after the payload, and fill it with a Multiboot memory map. Adjust a.out loader to calculate size with the extra space. (grub_multiboot_load_elf32): Adjust elf32 loader to calculate size with the extra space.
2008-08-17 16:32:18 +00:00
grub_machine_mmap_iterate (heap_init);
/* This variable indicates size, not offset. */
grub_upper_mem -= GRUB_MEMORY_MACHINE_UPPER_START;
2008-08-05 Colin D Bennett <colin@gibibit.com> High resolution timer support. Implemented for x86 CPUs using TSC. Extracted generic grub_millisleep() so it's linked in only as needed. This requires a Pentium compatible CPU; if the RDTSC instruction is not supported, then it falls back on the generic grub_get_time_ms() implementation that uses the machine's RTC. * conf/i386-pc.rmk (kernel_img_SOURCES): Add `kern/time.c', `kern/i386/tsc.c', `kern/generic/rtc_get_time_ms.c' and `kern/generic/millisleep.c'. * conf/i386-efi.rmk (kernel_mod_SOURCES): Add `kern/i386/tsc.c', `kern/generic/rtc_get_time_ms.c' and `kern/generic/millisleep.c'. * conf/x86_64-efi.rml (kernel_mod_SOURCES): Add `kern/generic/millisleep.c' and `kern/generic/rtc_get_time_ms.c'. * conf/sparc64-ieee1275.rmk (kernel_elf_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (kernel_elf_SOURCES): Add `kern/generic/millisleep.c'. * conf/i386-ieee1275.rmk (kernel_elf_SOURCES): Likewise. * conf/i386-coreboot.rmk (kernel_elf_SOURCES): Add `kern/time.c'. * kern/generic/rtc_get_time_ms.c: New file. * kern/generic/millisleep.c: New file. * kern/misc.c: Don't include <kern/time.h> anymore. (grub_millisleep_generic): Removed. * commands/sleep.c (grub_interruptible_millisleep): Uses grub_get_time_ms() instead of grub_get_rtc(). * include/grub/i386/tsc.h (grub_get_tsc): New file. New inline function. (grub_cpu_is_cpuid_supported): New inline function. (grub_cpu_is_tsc_supported): New inline function. (grub_tsc_init): New function prototype. (grub_tsc_get_time_ms): New function prototype. * kern/i386/tsc.c (grub_get_time_ms): New file. * include/grub/time.h: Include <grub/types.h. (grub_millisleep_generic): Removed. (grub_get_time_ms): New prototype. (grub_install_get_time_ms): New prototype. (grub_rtc_get_time_ms): New prototype. * kern/time.c (grub_get_time_ms): New function. (grub_install_get_time_ms): New function. * kern/i386/efi/init.c: Include <grub/cpu/tsc.h>. Don't include <grub/time.h> anymore. (grub_millisleep): Removed. (grub_machine_init): Call grub_tsc_init. * kern/i386/linuxbios/init.c (grub_machine_init): Install the RTC get_time_ms() implementation. * kern/sparc64/ieee1275/init.c (grub_millisleep): Removed. (ieee1275_get_time_ms): New function. (grub_machine_init): Install get_time_ms() implementation. * kern/i386/pc/init.c: Include <grub/cpu/tsc.h>. (grub_machine_init): Call grub_tsc_init(). (grub_millisleep): Removed. * kern/ieee1275/init.c (grub_millisleep): Removed. (grub_machine_init): Install ieee1275_get_time_ms() implementation. (ieee1275_get_time_ms): New function. (grub_get_rtc): Now calls ieee1275_get_time_ms(), which does the real work.
2008-08-05 11:54:37 +00:00
grub_tsc_init ();
}
void
grub_machine_set_prefix (void)
{
/* Initialize the prefix. */
grub_env_set ("prefix", grub_prefix);
}
void
grub_machine_fini (void)
{
grub_console_fini ();
}
/* Return the end of the core image. */
grub_addr_t
grub_arch_modules_addr (void)
{
return ALIGN_UP((grub_addr_t) _end, GRUB_MOD_ALIGN);
}