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> compile NEMU

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221220000 张三
Linux zzy 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
 23:06:41 up 2 days, 13:20,  1 user,  load average: 0.64, 0.62, 0.46
This commit is contained in:
tracer-ics2023
2024-09-14 23:06:42 +08:00
committed by zzy
parent 22bfc09837
commit ef8815e93b
2 changed files with 30 additions and 3 deletions
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8
nemu/src/device/vga.c
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@ -33,6 +33,7 @@ static uint32_t screen_size() {
static void *vmem = NULL;
static uint32_t *vgactl_port_base = NULL;
static uint32_t *sync_reg = NULL;
#ifdef CONFIG_VGA_SHOW_SCREEN
#ifndef CONFIG_TARGET_AM
@ -74,6 +75,10 @@ static inline void update_screen() {
void vga_update_screen() {
// TODO: call `update_screen()` when the sync register is non-zero,
// then zero out the sync register
if (*sync_reg) {
update_screen();
*sync_reg = 0;
}
}
void init_vga() {
@ -85,6 +90,9 @@ void init_vga() {
add_mmio_map("vgactl", CONFIG_VGA_CTL_MMIO, vgactl_port_base, 8, NULL);
#endif
sync_reg = (uint32_t*)new_space(8);
add_mmio_map("sync", CONFIG_VGA_CTL_MMIO + 8, sync_reg, 8, NULL);
vmem = new_space(screen_size());
add_mmio_map("vmem", CONFIG_FB_ADDR, vmem, screen_size(), NULL);
IFDEF(CONFIG_VGA_SHOW_SCREEN, init_screen());