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lfbvideo: set some more bits on bochs

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This commit is contained in:
K. Lange 2021-06-02 16:28:21 +09:00
parent 301539e9ca
commit bbea3a7b09
1 changed files with 4 additions and 1 deletions
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5
kernel/video/lfbvideo.c
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@ -238,7 +238,10 @@ static void bochs_set_resolution(uint16_t x, uint16_t y) {
bochs_mmio_out(BOCHS_MMIO_BPP, PREFERRED_B);
bochs_mmio_out(BOCHS_MMIO_VIRTX, x * (PREFERRED_B / 8));
bochs_mmio_out(BOCHS_MMIO_VIRTY, y);
bochs_mmio_out(BOCHS_MMIO_ENABLED, 1);
bochs_mmio_out(BOCHS_MMIO_ENABLED, 0x41); /* 01h: enabled, 40h: lfb */
/* unblank vga; this should only be necessary on secondary displays */
*(volatile uint8_t*)(lfb_bochs_mmio + 0x400) = 0x20;
lfb_resolution_x = bochs_mmio_in(BOCHS_MMIO_FBWIDTH);
lfb_resolution_y = bochs_mmio_in(BOCHS_MMIO_FBHEIGHT);