diff options
Diffstat (limited to 'arch/x86/lib/bios_setup.c')
| -rw-r--r-- | arch/x86/lib/bios_setup.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/arch/x86/lib/bios_setup.c b/arch/x86/lib/bios_setup.c deleted file mode 100644 index 265f7d6..0000000 --- a/arch/x86/lib/bios_setup.c +++ /dev/null @@ -1,179 +0,0 @@ -/* - * (C) Copyright 2002 - * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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; either version 2 of - * the License, or (at your option) any later version. - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -/* - * Partly based on msbios.c from rolo 1.6: - *---------------------------------------------------------------------- - * (C) Copyright 2000 - * Sysgo Real-Time Solutions GmbH - * Klein-Winternheim, Germany - *---------------------------------------------------------------------- - */ - -#include <common.h> -#include <pci.h> -#include <asm/realmode.h> -#include <asm/io.h> -#include "bios.h" - -DECLARE_GLOBAL_DATA_PTR; - -#define NUMVECTS 256 - -static int set_jmp_vector(int entry_point, void *target) -{ - if (entry_point & ~0xffff) - return -1; - - if (((u32)target - 0xf0000) & ~0xffff) - return -1; - - printf("set_jmp_vector: 0xf000:%04x -> %p\n", - entry_point, target); - - /* jmp opcode */ - writeb(0xea, 0xf0000 + entry_point); - - /* offset */ - writew(((u32)target-0xf0000), 0xf0000 + entry_point + 1); - - /* segment */ - writew(0xf000, 0xf0000 + entry_point + 3); - - return 0; -} - -/* Install an interrupt vector */ -static void setvector(int vector, u16 segment, void *handler) -{ - u16 *ptr = (u16 *)(vector * 4); - ptr[0] = ((u32)handler - (segment << 4)) & 0xffff; - ptr[1] = segment; - -#if 0 - printf("setvector: int%02x -> %04x:%04x\n", - vector, ptr[1], ptr[0]); -#endif -} - -int bios_setup(void) -{ - /* The BIOS section is not relocated and still in the ROM. */ - ulong bios_start = (ulong)&__bios_start; - ulong bios_size = (ulong)&__bios_size; - - static int done; - int vector; -#ifdef CONFIG_PCI - struct pci_controller *pri_hose; -#endif - if (done) - return 0; - - done = 1; - - if (bios_size > 65536) { - printf("BIOS too large (%ld bytes, max is 65536)\n", - bios_size); - return -1; - } - - memcpy(BIOS_BASE, (void *)bios_start, bios_size); - - /* clear bda */ - memset(BIOS_DATA, 0, BIOS_DATA_SIZE); - - /* enter some values to the bda */ - writew(0x3f8, BIOS_DATA); /* com1 addr */ - writew(0x2f8, BIOS_DATA+2); /* com2 addr */ - writew(0x3e8, BIOS_DATA+4); /* com3 addr */ - writew(0x2e8, BIOS_DATA+6); /* com4 addr */ - writew(0x278, BIOS_DATA+8); /* lpt1 addr */ - /* - * The kernel wants to read the base memory size - * from 40:13. Put a zero there to avoid an error message - */ - writew(0, BIOS_DATA+0x13); /* base memory size */ - - - /* setup realmode interrupt vectors */ - for (vector = 0; vector < NUMVECTS; vector++) - setvector(vector, BIOS_CS, &rm_def_int); - - setvector(0x00, BIOS_CS, &rm_int00); - setvector(0x01, BIOS_CS, &rm_int01); - setvector(0x02, BIOS_CS, &rm_int02); - setvector(0x03, BIOS_CS, &rm_int03); - setvector(0x04, BIOS_CS, &rm_int04); - setvector(0x05, BIOS_CS, &rm_int05); - setvector(0x06, BIOS_CS, &rm_int06); - setvector(0x07, BIOS_CS, &rm_int07); - setvector(0x08, BIOS_CS, &rm_int08); - setvector(0x09, BIOS_CS, &rm_int09); - setvector(0x0a, BIOS_CS, &rm_int0a); - setvector(0x0b, BIOS_CS, &rm_int0b); - setvector(0x0c, BIOS_CS, &rm_int0c); - setvector(0x0d, BIOS_CS, &rm_int0d); - setvector(0x0e, BIOS_CS, &rm_int0e); - setvector(0x0f, BIOS_CS, &rm_int0f); - setvector(0x10, BIOS_CS, &rm_int10); - setvector(0x11, BIOS_CS, &rm_int11); - setvector(0x12, BIOS_CS, &rm_int12); - setvector(0x13, BIOS_CS, &rm_int13); - setvector(0x14, BIOS_CS, &rm_int14); - setvector(0x15, BIOS_CS, &rm_int15); - setvector(0x16, BIOS_CS, &rm_int16); - setvector(0x17, BIOS_CS, &rm_int17); - setvector(0x18, BIOS_CS, &rm_int18); - setvector(0x19, BIOS_CS, &rm_int19); - setvector(0x1a, BIOS_CS, &rm_int1a); - setvector(0x1b, BIOS_CS, &rm_int1b); - setvector(0x1c, BIOS_CS, &rm_int1c); - setvector(0x1d, BIOS_CS, &rm_int1d); - setvector(0x1e, BIOS_CS, &rm_int1e); - setvector(0x1f, BIOS_CS, &rm_int1f); - - set_jmp_vector(0xfff0, &realmode_reset); - set_jmp_vector(0xfe6e, &realmode_pci_bios_call_entry); - - /* fill in data area */ - RELOC_16_WORD(0xf000, ram_in_64kb_chunks) = gd->ram_size >> 16; - RELOC_16_WORD(0xf000, bios_equipment) = 0; /* FixMe */ - - /* If we assume only one PCI hose, this PCI hose - * will own PCI bus #0, and the last PCI bus of - * that PCI hose will be the last PCI bus in the - * system. - * (This, ofcause break on multi hose systems, - * but our PCI BIOS only support one hose anyway) - */ -#ifdef CONFIG_PCI - pri_hose = pci_bus_to_hose(0); - if (NULL != pri_hose) { - /* fill in last pci bus number for use by the realmode - * PCI BIOS */ - RELOC_16_BYTE(0xf000, pci_last_bus) = pri_hose->last_busno; - } -#endif - return 0; -} |