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add remaining pin setups in the loader

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this simplifies the kernel's boot job a little bit by
having all the I/O resources set up by the loader.
This commit is contained in:
bunnie 2025-10-01 23:39:43 +08:00
parent 634ccd6c38
commit 9d2311f9ce
1 changed files with 33 additions and 3 deletions
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36
loader/src/platform/bao1x/bao1x.rs
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@ -30,9 +30,18 @@ pub const RAM_SIZE: usize = utralib::generated::HW_SRAM_MEM_LEN;
pub const RAM_BASE: usize = utralib::generated::HW_SRAM_MEM;
pub const FLASH_BASE: usize = utralib::generated::HW_RERAM_MEM;
// location of kernel, as offset from the base of ReRAM. This needs to match up with what is in link.x.
// exclusive of the signature block offset
pub const KERNEL_OFFSET: usize = 0x6_0000;
// location of kernel, as offset from the base of RRAM.
pub const KERNEL_OFFSET: usize = bao1x_api::offsets::KERNEL_START - utralib::generated::HW_RERAM_MEM;
const DATA_SIZE_BYTES: usize = 0x6000;
pub const HEAP_START: usize = RAM_BASE + DATA_SIZE_BYTES;
pub const HEAP_LEN: usize = 1024 * 256;
// scratch page for exceptions
// - scratch data is stored in positive offsets from here
// - exception stack is stored in negative offsets from here, hence the +4096
// total occupied area is [HEAP_START + HEAP_LEN..HEAP_START + HEAP_LEN + 8192]
pub const SCRATCH_PAGE: usize = HEAP_START + HEAP_LEN + 4096;
#[allow(dead_code)]
pub fn delay(quantum: usize) {
@ -105,6 +114,16 @@ pub fn early_init_hw() -> u32 {
#[cfg(feature = "board-baosec")]
{
// setup all the board pins to a known state
let iox = Iox::new(utra::iox::HW_IOX_BASE as *mut u32);
bao1x_hal::board::setup_display_pins(&iox);
bao1x_hal::board::setup_memory_pins(&iox);
bao1x_hal::board::setup_i2c_pins(&iox);
bao1x_hal::board::setup_camera_pins(&iox);
bao1x_hal::board::setup_kb_pins(&iox);
bao1x_hal::board::setup_oled_power_pin(&iox);
bao1x_hal::board::setup_trng_power_pin(&iox);
use bao1x_api::{IoGpio, IoxValue};
use bao1x_hal::udma::GlobalConfig;
use ux_api::minigfx::FrameBuffer;
@ -132,12 +151,23 @@ pub fn early_init_hw() -> u32 {
glbl_csr.wo(utra::sce_glbsfr::SFR_FFEN, 0x30);
glbl_csr.wo(utra::sce_glbsfr::SFR_FFCLR, 0xff05);
setup_alloc();
// this should go to the serial console, because boot1 setup the console for us
crate::println!("\n\r~~ Xous Loader ~~\n\r");
perclk
}
pub fn setup_alloc() {
// Initialize the allocator with heap memory range
crate::println!("Setting up heap @ {:x}-{:x}", HEAP_START, HEAP_START + HEAP_LEN);
crate::println!("Stack @ {:x}-{:x}", HEAP_START + HEAP_LEN, RAM_BASE + RAM_SIZE);
unsafe {
ALLOCATOR.lock().init(HEAP_START as *mut u8, HEAP_LEN);
}
}
// returns the actual per_clk
#[cfg(not(feature = "simulation-only"))]
pub unsafe fn init_clock_asic(freq_hz: u32) -> u32 {