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Video support in firmware

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-03-10 22:09:06 +01:00
parent c28e2d120b
commit 32f86589a6
2 changed files with 607 additions and 9 deletions
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70
video/sm712.c
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@ -27,6 +27,10 @@
#include <grub/video_fb.h>
#include <grub/pci.h>
#include "sm712_init.c"
#define GRUB_SM712_TOTAL_MEMORY_SPACE 0x700400
static struct
{
struct grub_video_mode_info mode_info;
@ -55,7 +59,7 @@ grub_video_sm712_video_fini (void)
{
if (framebuffer.mapped)
grub_pci_device_unmap_range (framebuffer.dev, framebuffer.ptr,
1024 * 600 * 2);
GRUB_SM712_TOTAL_MEMORY_SPACE);
return grub_video_fb_fini ();
}
@ -67,6 +71,7 @@ grub_video_sm712_setup (unsigned int width, unsigned int height,
int depth;
grub_err_t err;
int found = 0;
unsigned i;
auto int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev, grub_pci_id_t pciid __attribute__ ((unused)));
int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev, grub_pci_id_t pciid __attribute__ ((unused)))
@ -102,11 +107,6 @@ grub_video_sm712_setup (unsigned int width, unsigned int height,
if (!found)
return grub_error (GRUB_ERR_IO, "Couldn't find graphics card");
if (found && framebuffer.base == 0)
{
/* FIXME: change framebuffer base */
}
/* Fill mode info details. */
framebuffer.mode_info.width = 1024;
framebuffer.mode_info.height = 600;
@ -124,12 +124,64 @@ grub_video_sm712_setup (unsigned int width, unsigned int height,
framebuffer.mode_info.reserved_mask_size = 0;
framebuffer.mode_info.reserved_field_pos = 0;
framebuffer.mode_info.blit_format = grub_video_get_blit_format (&framebuffer.mode_info);
if (found && framebuffer.base == 0)
{
grub_pci_address_t addr;
/* FIXME: choose address dynamically if needed. */
framebuffer.base = 0x04000000;
addr = grub_pci_make_address (framebuffer.dev, GRUB_PCI_REG_ADDRESS_REG0);
grub_pci_write (addr, framebuffer.base);
/* Set latency. */
addr = grub_pci_make_address (framebuffer.dev, GRUB_PCI_REG_CACHELINE);
grub_pci_write (addr, 0x8);
/* Enable address spaces. */
addr = grub_pci_make_address (framebuffer.dev, GRUB_PCI_REG_COMMAND);
grub_pci_write (addr, 0x7);
}
/* We can safely discard volatile attribute. */
framebuffer.ptr = (void *) grub_pci_device_map_range (framebuffer.dev,
framebuffer.base,
1024 * 600 * 2);
framebuffer.ptr
= (void *) grub_pci_device_map_range (framebuffer.dev,
framebuffer.base,
GRUB_SM712_TOTAL_MEMORY_SPACE);
framebuffer.mapped = 1;
/* Initialise SM712. */
grub_outb (0x18, GRUB_MACHINE_PCI_IO_BASE + 0x3c4);
grub_outb (0x11, GRUB_MACHINE_PCI_IO_BASE + 0x3c5);
/* Prevent garbage from appearing on the screen. */
grub_memset (framebuffer.ptr, 0,
framebuffer.mode_info.height * framebuffer.mode_info.pitch);
for (i = 0; i < ARRAY_SIZE (sm712_init); i++)
switch (sm712_init[i].directive)
{
case 1:
*(volatile grub_uint8_t *) ((char *) framebuffer.ptr
+ sm712_init[i].addr) = sm712_init[i].val;
break;
case -1:
{
grub_uint8_t val = *(volatile grub_uint8_t *)
((char *) framebuffer.ptr + sm712_init[i].addr);
(void) val;
}
break;
case 2:
*(volatile grub_uint16_t *) ((char *) framebuffer.ptr
+ sm712_init[i].addr) = sm712_init[i].val;
break;
case 4:
*(volatile grub_uint32_t *) ((char *) framebuffer.ptr
+ sm712_init[i].addr) = sm712_init[i].val;
break;
}
err = grub_video_fb_create_render_target_from_pointer (&framebuffer.render_target, &framebuffer.mode_info, framebuffer.ptr);
if (err)