X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fdevices%2Foprom%2Fx86.c;h=564017d4e4e681497d6161bc620f078fa4a088dd;hb=b4aaaa7632116c2fe466095d0cd3cc1247344ca6;hp=436f57b8bc29c3e2fcee7b3b0cf167c21661e872;hpb=9839cbd53fdcfcee52c406d9f52af924192e618d;p=coreboot.git diff --git a/src/devices/oprom/x86.c b/src/devices/oprom/x86.c index 436f57b8b..564017d4e 100644 --- a/src/devices/oprom/x86.c +++ b/src/devices/oprom/x86.c @@ -25,39 +25,48 @@ #include #include #include +#include +#include +#include +#include "x86.h" +#include "vbe.h" +#include "../../src/lib/jpeg.h" -#define REALMODE_BASE ((void *)0x600) +void (*realmode_call)(u32 addr, u32 eax, u32 ebx, u32 ecx, u32 edx, + u32 esi, u32 edi) __attribute__((regparm(0))) = + (void *)&__realmode_call; -struct realmode_idt { - u16 offset, cs; -}; +void (*realmode_interrupt)(u32 intno, u32 eax, u32 ebx, u32 ecx, u32 edx, + u32 esi, u32 edi) __attribute__((regparm(0))) = + (void *)&__realmode_interrupt; -void x86_exception(struct eregs *info); +static void setup_rombios(void) +{ + const char date[] = "06/11/99"; + memcpy((void *)0xffff5, &date, 8); -extern unsigned char __idt_handler, __idt_handler_size; -extern unsigned char __realmode_code, __realmode_code_size; -extern unsigned char __run_optionrom, __run_interrupt; -extern unsigned char __run_vsa; + const char ident[] = "PCI_ISA"; + memcpy((void *)0xfffd9, &ident, 7); -void (*run_optionrom)(u32 devfn) __attribute__((regparm(0))) = (void *)&__run_optionrom; -void (*vga_enable_console)(void) __attribute__((regparm(0))) = (void *)&__run_interrupt; -void (*run_vsa)(u32 smm, u32 sysmem) __attribute__((regparm(0))) = (void *)&__run_vsa; + /* system model: IBM-AT */ + write8(0xffffe, 0xfc); +} int (*intXX_handler[256])(struct eregs *regs) = { NULL }; static int intXX_exception_handler(struct eregs *regs) { - printk(BIOS_INFO, "Oops, exception %d while executing option rom\n", + printk(BIOS_INFO, "Oops, exception %d while executing option rom\n", regs->vector); - x86_exception(regs); // Call coreboot exception handler + x86_exception(regs); // Call coreboot exception handler - return 0; // Never returns? + return 0; // Never really returns } static int intXX_unknown_handler(struct eregs *regs) { - printk(BIOS_INFO, "Unsupported software interrupt #0x%x\n", - regs->vector); + printk(BIOS_INFO, "Unsupported software interrupt #0x%x eax 0x%x\n", + regs->vector, regs->eax); return -1; } @@ -68,20 +77,16 @@ void mainboard_interrupt_handlers(int intXX, void *intXX_func) intXX_handler[intXX] = intXX_func; } -int int12_handler(struct eregs *regs); -int int15_handler(struct eregs *regs); -int int1a_handler(struct eregs *regs); - static void setup_interrupt_handlers(void) { int i; - /* The first 16 intXX functions are not BIOS services, + /* The first 16 intXX functions are not BIOS services, * but the CPU-generated exceptions ("hardware interrupts") */ for (i = 0; i < 0x10; i++) intXX_handler[i] = &intXX_exception_handler; - + /* Mark all other intXX calls as unknown first */ for (i = 0x10; i < 0x100; i++) { @@ -90,16 +95,19 @@ static void setup_interrupt_handlers(void) if(!intXX_handler[i]) { /* Now set the default functions that are actually - * needed to initialize the option roms. This is very - * slick, as it allows us to implement mainboard specific - * interrupt handlers, such as the int15 + * needed to initialize the option roms. This is + * very slick, as it allows us to implement mainboard + * specific interrupt handlers, such as the int15. */ switch (i) { + case 0x10: + intXX_handler[0x10] = &int10_handler; + break; case 0x12: intXX_handler[0x12] = &int12_handler; break; - case 0x15: - intXX_handler[0x15] = &int15_handler; + case 0x16: + intXX_handler[0x16] = &int16_handler; break; case 0x1a: intXX_handler[0x1a] = &int1a_handler; @@ -135,23 +143,129 @@ static void setup_realmode_idt(void) } /* Many option ROMs use the hard coded interrupt entry points in the - * system bios. So install them at the known locations. - * Only need int10 so far. + * system bios. So install them at the known locations. */ - + /* int42 is the relocated int10 */ - write_idt_stub((void *)0xff065, 0x42); + write_idt_stub((void *)0xff065, 0x42); + /* BIOS Int 11 Handler F000:F84D */ + write_idt_stub((void *)0xff84d, 0x11); + /* BIOS Int 12 Handler F000:F841 */ + write_idt_stub((void *)0xff841, 0x12); + /* BIOS Int 13 Handler F000:EC59 */ + write_idt_stub((void *)0xfec59, 0x13); + /* BIOS Int 14 Handler F000:E739 */ + write_idt_stub((void *)0xfe739, 0x14); + /* BIOS Int 15 Handler F000:F859 */ + write_idt_stub((void *)0xff859, 0x15); + /* BIOS Int 16 Handler F000:E82E */ + write_idt_stub((void *)0xfe82e, 0x16); + /* BIOS Int 17 Handler F000:EFD2 */ + write_idt_stub((void *)0xfefd2, 0x17); + /* ROM BIOS Int 1A Handler F000:FE6E */ + write_idt_stub((void *)0xffe6e, 0x1a); +} + +#if CONFIG_FRAMEBUFFER_SET_VESA_MODE +static u8 vbe_get_mode_info(vbe_mode_info_t * mode_info) +{ + printk(BIOS_DEBUG, "Getting information about VESA mode %04x\n", + mode_info->video_mode); + char *buffer = (char *)&__buffer; + u16 buffer_seg = (((unsigned long)buffer) >> 4) & 0xff00; + u16 buffer_adr = ((unsigned long)buffer) & 0xffff; + realmode_interrupt(0x10, VESA_GET_MODE_INFO, 0x0000, + mode_info->video_mode, 0x0000, buffer_seg, buffer_adr); + memcpy(mode_info->mode_info_block, buffer, sizeof(vbe_mode_info_t)); + return 0; +} + +static u8 vbe_set_mode(vbe_mode_info_t * mode_info) +{ + printk(BIOS_DEBUG, "Setting VESA mode %04x\n", mode_info->video_mode); + // request linear framebuffer mode + mode_info->video_mode |= (1 << 14); + // request clearing of framebuffer + mode_info->video_mode &= ~(1 << 15); + realmode_interrupt(0x10, VESA_SET_MODE, mode_info->video_mode, + 0x0000, 0x0000, 0x0000, 0x0000); + return 0; +} + +vbe_mode_info_t mode_info; + +/* These two functions could probably even be generic between + * yabel and x86 native. TBD later. + */ +void vbe_set_graphics(void) +{ + mode_info.video_mode = (1 << 14) | CONFIG_FRAMEBUFFER_VESA_MODE; + vbe_get_mode_info(&mode_info); + unsigned char *framebuffer = + (unsigned char *)mode_info.vesa.phys_base_ptr; + printk(BIOS_DEBUG, "framebuffer: %p\n", framebuffer); + vbe_set_mode(&mode_info); +#if CONFIG_BOOTSPLASH + struct jpeg_decdata *decdata; + decdata = malloc(sizeof(*decdata)); + unsigned char *jpeg = cbfs_find_file("bootsplash.jpg", + CBFS_TYPE_BOOTSPLASH); + if (!jpeg) { + return; + } + int ret = 0; + ret = jpeg_decode(jpeg, framebuffer, 1024, 768, 16, decdata); +#endif } +void vbe_textmode_console(void) +{ + delay(2); + realmode_interrupt(0x10, 0x0003, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000); +} + +void fill_lb_framebuffer(struct lb_framebuffer *framebuffer) +{ + framebuffer->physical_address = mode_info.vesa.phys_base_ptr; + + framebuffer->x_resolution = le16_to_cpu(mode_info.vesa.x_resolution); + framebuffer->y_resolution = le16_to_cpu(mode_info.vesa.y_resolution); + framebuffer->bytes_per_line = + le16_to_cpu(mode_info.vesa.bytes_per_scanline); + framebuffer->bits_per_pixel = mode_info.vesa.bits_per_pixel; + + framebuffer->red_mask_pos = mode_info.vesa.red_mask_pos; + framebuffer->red_mask_size = mode_info.vesa.red_mask_size; + + framebuffer->green_mask_pos = mode_info.vesa.green_mask_pos; + framebuffer->green_mask_size = mode_info.vesa.green_mask_size; + + framebuffer->blue_mask_pos = mode_info.vesa.blue_mask_pos; + framebuffer->blue_mask_size = mode_info.vesa.blue_mask_size; + + framebuffer->reserved_mask_pos = mode_info.vesa.reserved_mask_pos; + framebuffer->reserved_mask_size = mode_info.vesa.reserved_mask_size; +} +#endif + void run_bios(struct device *dev, unsigned long addr) { - /* clear vga bios data area */ - memset((void *)0x400, 0, 0x200); + u32 num_dev = (dev->bus->secondary << 8) | dev->path.pci.devfn; + + /* Setting up required hardware. + * Removing this will cause random illegal instruction exceptions + * in some option roms. + */ + setup_i8259(); + + /* Set up some legacy information in the F segment */ + setup_rombios(); /* Set up C interrupt handlers */ setup_interrupt_handlers(); - /* Setting up realmode IDT */ + /* Set up real-mode IDT */ setup_realmode_idt(); memcpy(REALMODE_BASE, &__realmode_code, (size_t)&__realmode_code_size); @@ -159,11 +273,17 @@ void run_bios(struct device *dev, unsigned long addr) (u32)&__realmode_code_size); printk(BIOS_DEBUG, "Calling Option ROM...\n"); - run_optionrom((dev->bus->secondary << 8) | dev->path.pci.devfn); + /* TODO ES:DI Pointer to System BIOS PnP Installation Check Structure */ + /* Option ROM entry point is at OPROM start + 3 */ + realmode_call(addr + 0x0003, num_dev, 0xffff, 0x0000, 0xffff, 0x0, 0x0); printk(BIOS_DEBUG, "... Option ROM returned.\n"); + +#if CONFIG_FRAMEBUFFER_SET_VESA_MODE + vbe_set_graphics(); +#endif } -#if defined(CONFIG_GEODE_VSA) && CONFIG_GEODE_VSA +#if CONFIG_GEODE_VSA #include #include #include @@ -184,7 +304,7 @@ static u32 VSA_vrRead(u16 classIndex) "outl %%eax, %%dx\n" "addb $2, %%dl\n" "inw %%dx, %%ax\n" - : "=a" (eax), "=b"(ebx), "=c"(ecx), "=d"(edx) + : "=a" (eax), "=b"(ebx), "=c"(ecx), "=d"(edx) : "a"(classIndex) ); @@ -195,9 +315,6 @@ void do_vsmbios(void) { printk(BIOS_DEBUG, "Preparing for VSA...\n"); - /* clear bios data area */ - memset((void *)0x400, 0, 0x200); - /* Set up C interrupt handlers */ setup_interrupt_handlers(); @@ -226,8 +343,11 @@ void do_vsmbios(void) } printk(BIOS_DEBUG, "Calling VSA module...\n"); + /* ECX gets SMM, EDX gets SYSMEM */ - run_vsa(MSR_GLIU0_SMM, MSR_GLIU0_SYSMEM); + realmode_call(VSA2_ENTRY_POINT, 0x0, 0x0, MSR_GLIU0_SMM, + MSR_GLIU0_SYSMEM, 0x0, 0x0); + printk(BIOS_DEBUG, "... VSA module returned.\n"); /* Restart timer 1 */ @@ -242,7 +362,7 @@ void do_vsmbios(void) } #endif -/* interrupt_handler() is called from assembler code only, +/* interrupt_handler() is called from assembler code only, * so there is no use in putting the prototype into a header file. */ int __attribute__((regparm(0))) interrupt_handler(u32 intnumber, @@ -271,6 +391,7 @@ int __attribute__((regparm(0))) interrupt_handler(u32 intnumber, cs = cs_ip >> 16; flags = stackflags; +#if CONFIG_REALMODE_DEBUG printk(BIOS_DEBUG, "oprom: INT# 0x%x\n", intnumber); printk(BIOS_DEBUG, "oprom: eax: %08x ebx: %08x ecx: %08x edx: %08x\n", eax, ebx, ecx, edx); @@ -278,6 +399,7 @@ int __attribute__((regparm(0))) interrupt_handler(u32 intnumber, ebp, esp, edi, esi); printk(BIOS_DEBUG, "oprom: ip: %04x cs: %04x flags: %08x\n", ip, cs, flags); +#endif // Fetch arguments from the stack and put them into // a structure that we want to pass on to our sub interrupt @@ -305,7 +427,7 @@ int __attribute__((regparm(0))) interrupt_handler(u32 intnumber, // will later pop them. // What happens here is that we force (volatile!) changing // the values of the parameters of this function. We do this - // because we know that they stay alive on the stack after + // because we know that they stay alive on the stack after // we leave this function. Don't say this is bollocks. *(volatile u32 *)&eax = reg_info.eax; *(volatile u32 *)&ecx = reg_info.ecx; @@ -317,7 +439,7 @@ int __attribute__((regparm(0))) interrupt_handler(u32 intnumber, /* Pass errors back to our caller via the CARRY flag */ if (ret) { - printk(BIOS_DEBUG,"error!\n"); + printk(BIOS_DEBUG,"int%02x call returned error.\n", intnumber); flags |= 1; // error: set carry }else{ flags &= ~1; // no error: clear carry