| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <halt.h> |
| #include <device/mmio.h> |
| #include <ramdetect.h> |
| #include <symbols.h> |
| #include <framebuffer_info.h> |
| |
| static void init_gfx(void) |
| { |
| uint32_t *pl111; |
| /* width is at most 4096 */ |
| /* height is at most 1024 */ |
| int width = 800, height = 600; |
| uint32_t framebuffer = 0x4c000000; |
| pl111 = (uint32_t *) 0x10020000; |
| write32(pl111, (width / 4) - 4); |
| write32(pl111 + 1, height - 1); |
| /* registers 2, 3 and 5 are ignored by qemu. Set them correctly if |
| we ever go for real hw. */ |
| /* framebuffer address offset. Has to be in vram. */ |
| write32(pl111 + 4, framebuffer); |
| write32(pl111 + 7, 0); |
| write32(pl111 + 10, 0xff); |
| write32(pl111 + 6, (5 << 1) | 0x801); |
| |
| fb_add_framebuffer_info(framebuffer, width, height, 4 * width, 32); |
| } |
| |
| static void mainboard_enable(struct device *dev) |
| { |
| int discovered; |
| if (!dev) { |
| printk(BIOS_EMERG, "No dev0; die\n"); |
| halt(); |
| } |
| |
| discovered = probe_ramsize((uintptr_t)_dram, CONFIG_DRAM_SIZE_MB); |
| printk(BIOS_DEBUG, "%d MiB of RAM discovered\n", discovered); |
| ram_range(dev, 0, 0x60000000, discovered * MiB); |
| init_gfx(); |
| } |
| |
| struct chip_operations mainboard_ops = { |
| .enable_dev = mainboard_enable, |
| }; |