diff options
author | 2017-04-25 03:31:15 -0700 | |
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committer | 2017-05-22 06:48:08 +0000 | |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/roms/seabios/src/system.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/roms/seabios/src/system.c')
-rw-r--r-- | qemu/roms/seabios/src/system.c | 357 |
1 files changed, 0 insertions, 357 deletions
diff --git a/qemu/roms/seabios/src/system.c b/qemu/roms/seabios/src/system.c deleted file mode 100644 index 438e60e2c..000000000 --- a/qemu/roms/seabios/src/system.c +++ /dev/null @@ -1,357 +0,0 @@ -// Handler for int 0x15 "system" calls -// -// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> -// Copyright (C) 2002 MandrakeSoft S.A. -// -// This file may be distributed under the terms of the GNU LGPLv3 license. - -#include "biosvar.h" // GET_GLOBAL -#include "bregs.h" // struct bregs -#include "e820map.h" // E820_RAM -#include "hw/pic.h" // pic_reset -#include "malloc.h" // LegacyRamSize -#include "output.h" // debug_enter -#include "string.h" // memcpy_far -#include "util.h" // handle_1553 -#include "x86.h" // set_a20 - -static void -handle_152400(struct bregs *regs) -{ - set_a20(0); - set_code_success(regs); -} - -static void -handle_152401(struct bregs *regs) -{ - set_a20(1); - set_code_success(regs); -} - -static void -handle_152402(struct bregs *regs) -{ - regs->al = get_a20(); - set_code_success(regs); -} - -static void -handle_152403(struct bregs *regs) -{ - regs->bx = 3; - set_code_success(regs); -} - -static void -handle_1524XX(struct bregs *regs) -{ - set_code_unimplemented(regs, RET_EUNSUPPORTED); -} - -static void -handle_1524(struct bregs *regs) -{ - switch (regs->al) { - case 0x00: handle_152400(regs); break; - case 0x01: handle_152401(regs); break; - case 0x02: handle_152402(regs); break; - case 0x03: handle_152403(regs); break; - default: handle_1524XX(regs); break; - } -} - -// removable media eject -static void -handle_1552(struct bregs *regs) -{ - set_code_success(regs); -} - -static void -handle_1587(struct bregs *regs) -{ - // +++ should probably have descriptor checks - // +++ should have exception handlers - - u8 prev_a20_enable = set_a20(1); // enable A20 line - - // 128K max of transfer on 386+ ??? - // source == destination ??? - - // ES:SI points to descriptor table - // offset use initially comments - // ============================================== - // 00..07 Unused zeros Null descriptor - // 08..0f GDT zeros filled in by BIOS - // 10..17 source ssssssss source of data - // 18..1f dest dddddddd destination of data - // 20..27 CS zeros filled in by BIOS - // 28..2f SS zeros filled in by BIOS - -// check for access rights of source & dest here - - // Initialize GDT descriptor - u64 *gdt_far = (void*)(regs->si + 0); - u16 gdt_seg = regs->es; - u32 loc = (u32)MAKE_FLATPTR(gdt_seg, gdt_far); - SET_FARVAR(gdt_seg, gdt_far[1], GDT_DATA | GDT_LIMIT((6*sizeof(u64))-1) - | GDT_BASE(loc)); - // Initialize CS descriptor - u64 lim = GDT_LIMIT(0x0ffff); - if (in_post()) - lim = GDT_GRANLIMIT(0xffffffff); - SET_FARVAR(gdt_seg, gdt_far[4], GDT_CODE | lim | GDT_BASE(BUILD_BIOS_ADDR)); - // Initialize SS descriptor - loc = (u32)MAKE_FLATPTR(GET_SEG(SS), 0); - SET_FARVAR(gdt_seg, gdt_far[5], GDT_DATA | lim | GDT_BASE(loc)); - - SET_SEG(ES, gdt_seg); - u16 count = regs->cx, si = 0, di = 0; - asm volatile( - // Load new descriptor tables - " lgdtw %%es:(1<<3)(%%eax)\n" - " lidtw %%cs:pmode_IDT_info\n" - - // Enable protected mode - " movl %%cr0, %%eax\n" - " orl $" __stringify(CR0_PE) ", %%eax\n" - " movl %%eax, %%cr0\n" - - // far jump to flush CPU queue after transition to protected mode - " ljmpw $(4<<3), $1f\n" - - // GDT points to valid descriptor table, now load DS, ES - "1:movw $(2<<3), %%ax\n" // 2nd descriptor in table, TI=GDT, RPL=00 - " movw %%ax, %%ds\n" - " movw $(3<<3), %%ax\n" // 3rd descriptor in table, TI=GDT, RPL=00 - " movw %%ax, %%es\n" - - // memcpy CX words using 32bit memcpy if applicable - " testw $1, %%cx\n" - " jnz 3f\n" - " shrw $1, %%cx\n" - " rep movsl %%ds:(%%si), %%es:(%%di)\n" - - // Restore DS and ES segment limits to 0xffff - "2:movw $(5<<3), %%ax\n" // 5th descriptor in table (SS) - " movw %%ax, %%ds\n" - " movw %%ax, %%es\n" - - // Disable protected mode - " movl %%cr0, %%eax\n" - " andl $~" __stringify(CR0_PE) ", %%eax\n" - " movl %%eax, %%cr0\n" - - // far jump to flush CPU queue after transition to real mode - " ljmpw $" __stringify(SEG_BIOS) ", $4f\n" - - // Slower 16bit copy method - "3:rep movsw %%ds:(%%si), %%es:(%%di)\n" - " jmp 2b\n" - - // restore IDT to normal real-mode defaults - "4:lidtw %%cs:rmode_IDT_info\n" - - // Restore %ds (from %ss) - " movw %%ss, %%ax\n" - " movw %%ax, %%ds\n" - : "+a" (gdt_far), "+c"(count), "+m" (__segment_ES) - : "S" (si), "D" (di) - : "cc"); - - set_a20(prev_a20_enable); - - set_code_success(regs); -} - -// Get the amount of extended memory (above 1M) -static void -handle_1588(struct bregs *regs) -{ - u32 rs = GET_GLOBAL(LegacyRamSize); - - // According to Ralf Brown's interrupt the limit should be 15M, - // but real machines mostly return max. 63M. - if (rs > 64*1024*1024) - regs->ax = 63 * 1024; - else - regs->ax = (rs - 1*1024*1024) / 1024; - set_success(regs); -} - -// Switch to protected mode -void VISIBLE16 -handle_1589(struct bregs *regs) -{ - debug_enter(regs, DEBUG_HDL_15); - set_a20(1); - - pic_reset(regs->bl, regs->bh); - - u64 *gdt_far = (void*)(regs->si + 0); - u16 gdt_seg = regs->es; - SET_FARVAR(gdt_seg, gdt_far[7], GDT_CODE | GDT_LIMIT(BUILD_BIOS_SIZE-1) - | GDT_BASE(BUILD_BIOS_ADDR)); - - regs->ds = 3<<3; // 3rd gdt descriptor is %ds - regs->es = 4<<3; // 4th gdt descriptor is %es - regs->code.seg = 6<<3; // 6th gdt descriptor is %cs - - set_code_success(regs); - - asm volatile( - // Load new descriptor tables - " lgdtw %%es:(1<<3)(%%si)\n" - " lidtw %%es:(2<<3)(%%si)\n" - - // Enable protected mode - " movl %%cr0, %%eax\n" - " orl $" __stringify(CR0_PE) ", %%eax\n" - " movl %%eax, %%cr0\n" - - // far jump to flush CPU queue after transition to protected mode - " ljmpw $(7<<3), $1f\n" - - // GDT points to valid descriptor table, now load SS - "1:movw $(5<<3), %%ax\n" - " movw %%ax, %%ds\n" - " movw %%ax, %%ss\n" - : - : "S"(gdt_far), "m" (__segment_ES) - : "eax", "cc"); -} - -// Device busy interrupt. Called by Int 16h when no key available -static void -handle_1590(struct bregs *regs) -{ -} - -// Interrupt complete. Called by Int 16h when key becomes available -static void -handle_1591(struct bregs *regs) -{ -} - -// keyboard intercept -static void -handle_154f(struct bregs *regs) -{ - set_invalid_silent(regs); -} - -static void -handle_15c0(struct bregs *regs) -{ - regs->es = SEG_BIOS; - regs->bx = (u32)&BIOS_CONFIG_TABLE; - set_code_success(regs); -} - -static void -handle_15c1(struct bregs *regs) -{ - regs->es = get_ebda_seg(); - set_success(regs); -} - -static void -handle_15e801(struct bregs *regs) -{ - // my real system sets ax and bx to 0 - // this is confirmed by Ralph Brown list - // but syslinux v1.48 is known to behave - // strangely if ax is set to 0 - // regs.u.r16.ax = 0; - // regs.u.r16.bx = 0; - - u32 rs = GET_GLOBAL(LegacyRamSize); - - // Get the amount of extended memory (above 1M) - if (rs > 16*1024*1024) { - // limit to 15M - regs->cx = 15*1024; - // Get the amount of extended memory above 16M in 64k blocks - regs->dx = (rs - 16*1024*1024) / (64*1024); - } else { - regs->cx = (rs - 1*1024*1024) / 1024; - regs->dx = 0; - } - - // Set configured memory equal to extended memory - regs->ax = regs->cx; - regs->bx = regs->dx; - - set_success(regs); -} - -static void -handle_15e820(struct bregs *regs) -{ - int count = GET_GLOBAL(e820_count); - if (regs->edx != 0x534D4150 || regs->bx >= count - || regs->ecx < sizeof(e820_list[0])) { - set_code_invalid(regs, RET_EUNSUPPORTED); - return; - } - - memcpy_far(regs->es, (void*)(regs->di+0) - , get_global_seg(), &e820_list[regs->bx] - , sizeof(e820_list[0])); - if (regs->bx == count-1) - regs->ebx = 0; - else - regs->ebx++; - regs->eax = 0x534D4150; - regs->ecx = sizeof(e820_list[0]); - set_success(regs); -} - -static void -handle_15e8XX(struct bregs *regs) -{ - set_code_unimplemented(regs, RET_EUNSUPPORTED); -} - -static void -handle_15e8(struct bregs *regs) -{ - switch (regs->al) { - case 0x01: handle_15e801(regs); break; - case 0x20: handle_15e820(regs); break; - default: handle_15e8XX(regs); break; - } -} - -static void -handle_15XX(struct bregs *regs) -{ - set_code_unimplemented(regs, RET_EUNSUPPORTED); -} - -// INT 15h System Services Entry Point -void VISIBLE16 -handle_15(struct bregs *regs) -{ - debug_enter(regs, DEBUG_HDL_15); - switch (regs->ah) { - case 0x24: handle_1524(regs); break; - case 0x4f: handle_154f(regs); break; - case 0x52: handle_1552(regs); break; - case 0x53: handle_1553(regs); break; - case 0x5f: handle_155f(regs); break; - case 0x7f: handle_157f(regs); break; - case 0x83: handle_1583(regs); break; - case 0x86: handle_1586(regs); break; - case 0x87: handle_1587(regs); break; - case 0x88: handle_1588(regs); break; - case 0x90: handle_1590(regs); break; - case 0x91: handle_1591(regs); break; - case 0xc0: handle_15c0(regs); break; - case 0xc1: handle_15c1(regs); break; - case 0xc2: handle_15c2(regs); break; - case 0xe8: handle_15e8(regs); break; - default: handle_15XX(regs); break; - } -} |