vasilito
15d0707e74
Add redbear-usb-storage-check in-guest binary that validates USB mass storage read and write I/O: discovers /scheme/disk/ devices, writes a test pattern to sector 2048, reads it back, verifies match, restores original content. Updates test-usb-storage-qemu.sh with write-proof verification step. Includes all accumulated Red Bear OS work: kernel patches, relibc patches, driver infrastructure, DRM/GPU, KDE recipes, firmware, validation tooling, build system hardening, and documentation.
47 lines
1017 B
Rust
47 lines
1017 B
Rust
use common::io::{Io, Pio};
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const BGA_INDEX_XRES: u16 = 1;
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const BGA_INDEX_YRES: u16 = 2;
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const BGA_INDEX_BPP: u16 = 3;
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const BGA_INDEX_ENABLE: u16 = 4;
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pub struct Bga {
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index: Pio<u16>,
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data: Pio<u16>,
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}
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impl Bga {
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pub fn new() -> Bga {
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Bga {
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index: Pio::new(0x1CE),
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data: Pio::new(0x1CF),
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}
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}
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fn read(&mut self, index: u16) -> u16 {
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self.index.write(index);
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self.data.read()
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}
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fn write(&mut self, index: u16, data: u16) {
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self.index.write(index);
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self.data.write(data);
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}
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pub fn width(&mut self) -> u16 {
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self.read(BGA_INDEX_XRES)
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}
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pub fn height(&mut self) -> u16 {
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self.read(BGA_INDEX_YRES)
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}
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pub fn set_size(&mut self, width: u16, height: u16) {
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self.write(BGA_INDEX_ENABLE, 0);
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self.write(BGA_INDEX_XRES, width);
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self.write(BGA_INDEX_YRES, height);
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self.write(BGA_INDEX_BPP, 32);
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self.write(BGA_INDEX_ENABLE, 0x41);
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}
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}
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