#include <arch/registers.h>
#include <console/console.h>
#include <arch/interrupt.h>
-
-#define REALMODE_BASE ((void *)0x600)
-
-struct realmode_idt {
- u16 offset, cs;
-};
-
-void x86_exception(struct eregs *info);
-
-/* From x86_asm.S */
-extern unsigned char __idt_handler, __idt_handler_size;
-extern unsigned char __realmode_code, __realmode_code_size;
-extern unsigned char __realmode_call, __realmode_interrupt;
+#include <cbfs.h>
+#include <delay.h>
+#include <pc80/i8259.h>
+#include "x86.h"
+#include "vbe.h"
+#include "../../src/lib/jpeg.h"
void (*realmode_call)(u32 addr, u32 eax, u32 ebx, u32 ecx, u32 edx,
- u32 esi, u32 edi) __attribute__((regparm(0))) = (void *)&__realmode_call;
-
-void (*realmode_interrupt)(u32 intno, u32 eax, u32 ebx, u32 ecx, u32 edx,
- u32 esi, u32 edi) __attribute__((regparm(0))) = (void *)&__realmode_interrupt;
+ u32 esi, u32 edi) __attribute__((regparm(0))) =
+ (void *)&__realmode_call;
-#define FAKE_MEMORY_SIZE (1024*1024) // only 1MB
-#define INITIAL_EBDA_SEGMENT 0xF600
-#define INITIAL_EBDA_SIZE 0x400
+void (*realmode_interrupt)(u32 intno, u32 eax, u32 ebx, u32 ecx, u32 edx,
+ u32 esi, u32 edi) __attribute__((regparm(0))) =
+ (void *)&__realmode_interrupt;
static void setup_bda(void)
{
{
printk(BIOS_INFO, "Oops, exception %d while executing option rom\n",
regs->vector);
-#if 0
- // Odd: The i945GM VGA oprom chokes on a pushl %eax and will
- // die with an exception #6 if we run the coreboot exception
- // handler. Just continue, as it executes fine.
x86_exception(regs); // Call coreboot exception handler
-#endif
- 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;
}
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;
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;
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)
{
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 BIOS Data Area */
setup_bda();
/* 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 <cpu/amd/lxdef.h>
#include <cpu/amd/vr.h>
#include <cbfs.h>
printk(BIOS_DEBUG, "Calling VSA module...\n");
/* ECX gets SMM, EDX gets SYSMEM */
- realmode_call(VSA2_ENTRY_POINT, 0x0, 0x0, MSR_GLIU0_SMM,
+ realmode_call(VSA2_ENTRY_POINT, 0x0, 0x0, MSR_GLIU0_SMM,
MSR_GLIU0_SYSMEM, 0x0, 0x0);
printk(BIOS_DEBUG, "... VSA module returned.\n");
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);
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
projects / coreboot.git / blobdiff