xinyangli
2824efad33
NJU-ProjectN/nemu eb63cf3568dbf4e0c3c6ef462e6ec685550fabbc Merge pull request #76 from rijuyuezhu/master
92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
/***************************************************************************************
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* Copyright (c) 2014-2022 Zihao Yu, Nanjing University
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*
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* NEMU is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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*
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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*
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* See the Mulan PSL v2 for more details.
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***************************************************************************************/
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#include <common.h>
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#include <device/map.h>
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#define SCREEN_W (MUXDEF(CONFIG_VGA_SIZE_800x600, 800, 400))
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#define SCREEN_H (MUXDEF(CONFIG_VGA_SIZE_800x600, 600, 300))
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static uint32_t screen_width() {
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return MUXDEF(CONFIG_TARGET_AM, io_read(AM_GPU_CONFIG).width, SCREEN_W);
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}
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static uint32_t screen_height() {
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return MUXDEF(CONFIG_TARGET_AM, io_read(AM_GPU_CONFIG).height, SCREEN_H);
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}
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static uint32_t screen_size() {
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return screen_width() * screen_height() * sizeof(uint32_t);
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}
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static void *vmem = NULL;
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static uint32_t *vgactl_port_base = NULL;
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#ifdef CONFIG_VGA_SHOW_SCREEN
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#ifndef CONFIG_TARGET_AM
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#include <SDL2/SDL.h>
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static SDL_Renderer *renderer = NULL;
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static SDL_Texture *texture = NULL;
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static void init_screen() {
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SDL_Window *window = NULL;
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char title[128];
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sprintf(title, "%s-NEMU", str(__GUEST_ISA__));
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SDL_Init(SDL_INIT_VIDEO);
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SDL_CreateWindowAndRenderer(
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SCREEN_W * (MUXDEF(CONFIG_VGA_SIZE_400x300, 2, 1)),
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SCREEN_H * (MUXDEF(CONFIG_VGA_SIZE_400x300, 2, 1)),
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0, &window, &renderer);
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SDL_SetWindowTitle(window, title);
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texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888,
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SDL_TEXTUREACCESS_STATIC, SCREEN_W, SCREEN_H);
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SDL_RenderPresent(renderer);
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}
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static inline void update_screen() {
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SDL_UpdateTexture(texture, NULL, vmem, SCREEN_W * sizeof(uint32_t));
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SDL_RenderClear(renderer);
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SDL_RenderCopy(renderer, texture, NULL, NULL);
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SDL_RenderPresent(renderer);
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}
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#else
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static void init_screen() {}
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static inline void update_screen() {
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io_write(AM_GPU_FBDRAW, 0, 0, vmem, screen_width(), screen_height(), true);
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}
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#endif
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#endif
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void vga_update_screen() {
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// TODO: call `update_screen()` when the sync register is non-zero,
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// then zero out the sync register
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}
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void init_vga() {
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vgactl_port_base = (uint32_t *)new_space(8);
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vgactl_port_base[0] = (screen_width() << 16) | screen_height();
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#ifdef CONFIG_HAS_PORT_IO
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add_pio_map ("vgactl", CONFIG_VGA_CTL_PORT, vgactl_port_base, 8, NULL);
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#else
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add_mmio_map("vgactl", CONFIG_VGA_CTL_MMIO, vgactl_port_base, 8, NULL);
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#endif
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vmem = new_space(screen_size());
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add_mmio_map("vmem", CONFIG_FB_ADDR, vmem, screen_size(), NULL);
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IFDEF(CONFIG_VGA_SHOW_SCREEN, init_screen());
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IFDEF(CONFIG_VGA_SHOW_SCREEN, memset(vmem, 0, screen_size()));
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}
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