--- /dev/null
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2010 Free Software Foundation, Inc.
+ *
+ * GRUB 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/pci.h>
+#include <grub/machine/kernel.h>
+#include <grub/misc.h>
+#include <grub/vga.h>
+
+static struct {grub_uint8_t r, g, b, a; } colors[] =
+ {
+ // {R, G, B, A}
+ {0x00, 0x00, 0x00, 0xFF}, // 0 = black
+ {0x00, 0x00, 0xA8, 0xFF}, // 1 = blue
+ {0x00, 0xA8, 0x00, 0xFF}, // 2 = green
+ {0x00, 0xA8, 0xA8, 0xFF}, // 3 = cyan
+ {0xA8, 0x00, 0x00, 0xFF}, // 4 = red
+ {0xA8, 0x00, 0xA8, 0xFF}, // 5 = magenta
+ {0xA8, 0x54, 0x00, 0xFF}, // 6 = brown
+ {0xA8, 0xA8, 0xA8, 0xFF}, // 7 = light gray
+
+ {0x54, 0x54, 0x54, 0xFF}, // 8 = dark gray
+ {0x54, 0x54, 0xFE, 0xFF}, // 9 = bright blue
+ {0x54, 0xFE, 0x54, 0xFF}, // 10 = bright green
+ {0x54, 0xFE, 0xFE, 0xFF}, // 11 = bright cyan
+ {0xFE, 0x54, 0x54, 0xFF}, // 12 = bright red
+ {0xFE, 0x54, 0xFE, 0xFF}, // 13 = bright magenta
+ {0xFE, 0xFE, 0x54, 0xFF}, // 14 = yellow
+ {0xFE, 0xFE, 0xFE, 0xFF} // 15 = white
+ };
+
+#include <ascii.h>
+
+static void
+load_font (void)
+{
+ unsigned i;
+
+ grub_vga_gr_write (0 << 2, GRUB_VGA_GR_GR6);
+
+ grub_vga_sr_write (GRUB_VGA_SR_MEMORY_MODE_NORMAL, GRUB_VGA_SR_MEMORY_MODE);
+ grub_vga_sr_write (1 << GRUB_VGA_TEXT_FONT_PLANE,
+ GRUB_VGA_SR_MAP_MASK_REGISTER);
+
+ grub_vga_gr_write (0, GRUB_VGA_GR_DATA_ROTATE);
+ grub_vga_gr_write (0, GRUB_VGA_GR_MODE);
+ grub_vga_gr_write (0xff, GRUB_VGA_GR_BITMASK);
+
+ for (i = 0; i < 128; i++)
+ grub_memcpy ((void *) (0xa0000 + 32 * i), ascii_bitmaps + 16 * (0x7f - i), 16);
+}
+
+static void
+load_palette (void)
+{
+ unsigned i;
+ for (i = 0; i < 16; i++)
+ {
+ grub_outb (i, GRUB_VGA_IO_ARX);
+ grub_outb (i, GRUB_VGA_IO_ARX);
+ }
+
+ for (i = 0; i < ARRAY_SIZE (colors); i++)
+ grub_vga_palette_write (i, colors[i].r, colors[i].g, colors[i].b);
+}
+
+void
+grub_qemu_init_cirrus (void)
+{
+ auto int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev, grub_pci_id_t pciid);
+ int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev, grub_pci_id_t pciid __attribute__ ((unused)))
+ {
+ grub_pci_address_t addr;
+ grub_uint32_t class;
+
+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_CLASS);
+ class = grub_pci_read (addr);
+
+ if (((class >> 16) & 0xffff) != 0x0300)
+ return 0;
+
+ /* FIXME: chooose addresses dynamically. */
+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
+ grub_pci_write (addr, 0xf0000000 | GRUB_PCI_ADDR_MEM_PREFETCH
+ | GRUB_PCI_ADDR_SPACE_MEMORY | GRUB_PCI_ADDR_MEM_TYPE_32);
+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG1);
+ grub_pci_write (addr, 0xf2000000
+ | GRUB_PCI_ADDR_SPACE_MEMORY | GRUB_PCI_ADDR_MEM_TYPE_32);
+
+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
+ grub_pci_write (addr, GRUB_PCI_REG_STATUS_MEMORY_ENABLE
+ | GRUB_PCI_REG_STATUS_IO_ENABLE);
+
+ return 1;
+ }
+
+ grub_pci_iterate (find_card);
+
+ grub_outb (1, 0x3c2);
+
+ load_font ();
+
+ grub_vga_gr_write (GRUB_VGA_GR_GR6_MMAP_CGA, GRUB_VGA_GR_GR6);
+ grub_vga_gr_write (GRUB_VGA_GR_MODE_ODD_EVEN, GRUB_VGA_GR_MODE);
+
+ grub_vga_sr_write (GRUB_VGA_SR_MEMORY_MODE_NORMAL, GRUB_VGA_SR_MEMORY_MODE);
+
+ grub_vga_sr_write ((1 << GRUB_VGA_TEXT_TEXT_PLANE)
+ | (1 << GRUB_VGA_TEXT_ATTR_PLANE),
+ GRUB_VGA_SR_MAP_MASK_REGISTER);
+
+ grub_vga_cr_write (15, GRUB_VGA_CR_CELL_HEIGHT);
+ grub_vga_cr_write (79, GRUB_VGA_CR_WIDTH);
+ grub_vga_cr_write (40, GRUB_VGA_CR_PITCH);
+
+ int vert = 25 * 16;
+ grub_vga_cr_write (vert & 0xff, GRUB_VGA_CR_HEIGHT);
+ grub_vga_cr_write (((vert >> GRUB_VGA_CR_OVERFLOW_HEIGHT1_SHIFT)
+ & GRUB_VGA_CR_OVERFLOW_HEIGHT1_MASK)
+ | ((vert >> GRUB_VGA_CR_OVERFLOW_HEIGHT2_SHIFT)
+ & GRUB_VGA_CR_OVERFLOW_HEIGHT2_MASK),
+ GRUB_VGA_CR_OVERFLOW);
+
+ load_palette ();
+
+ grub_outb (0x10, 0x3c0);
+ grub_outb (0, 0x3c1);
+ grub_outb (0x14, 0x3c0);
+ grub_outb (0, 0x3c1);
+
+ grub_vga_sr_write (GRUB_VGA_SR_CLOCKING_MODE_8_DOT_CLOCK,
+ GRUB_VGA_SR_CLOCKING_MODE);
+
+ grub_vga_cr_write (14, GRUB_VGA_CR_CURSOR_START);
+ grub_vga_cr_write (15, GRUB_VGA_CR_CURSOR_END);
+
+ grub_outb (0x20, 0x3c0);
+}
projects / thirdparty / grub.git / commitdiff
