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bootloader docs
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This commit is contained in:
Robin Müller
2024-09-20 11:58:41 +02:00
parent 501d1c973e
commit 784a6d7146
5 changed files with 80 additions and 11 deletions
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24
bootloader/src/main.rs
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@ -39,19 +39,21 @@ const BOOTLOADER_START_ADDR: u32 = 0x0;
const BOOTLOADER_CRC_ADDR: u32 = BOOTLOADER_END_ADDR - 2;
// This is also the maximum size of the bootloader.
const BOOTLOADER_END_ADDR: u32 = 0x3000;
const APP_A_START_ADDR: u32 = 0x3000;
const APP_A_SIZE_ADDR: u32 = APP_A_END_ADDR - 8;
// Four bytes reserved, even when only 2 byte CRC is used. Leaves flexibility to switch to CRC32.
const APP_A_CRC_ADDR: u32 = APP_A_END_ADDR - 4;
pub const APP_A_END_ADDR: u32 = 0x11000;
const APP_A_START_ADDR: u32 = BOOTLOADER_END_ADDR;
const APP_A_SIZE_ADDR: u32 = APP_A_END_ADDR - 8; // 0x117F8
// Four bytes reserved, even when only 2 byte CRC is used. Leaves flexibility to switch to CRC32.
const APP_A_CRC_ADDR: u32 = APP_A_END_ADDR - 4; // 0x117FC
pub const APP_A_END_ADDR: u32 = APP_B_END_ADDR - BOOTLOADER_END_ADDR / 2; // 0x11800
// The actual size of the image which is relevant for CRC calculation.
const APP_B_START_ADDR: u32 = APP_A_END_ADDR;
// The actual size of the image which is relevant for CRC calculation.
const APP_B_START_ADDR: u32 = 0x11000;
// The actual size of the image which is relevant for CRC calculation.
const APP_B_SIZE_ADDR: u32 = APP_B_END_ADDR - 8;
// Four bytes reserved, even when only 2 byte CRC is used. Leaves flexibility to switch to CRC32.
const APP_B_CRC_ADDR: u32 = APP_B_END_ADDR - 4;
const APP_B_SIZE_ADDR: u32 = APP_B_END_ADDR - 8; // 0x1FFF8
// Four bytes reserved, even when only 2 byte CRC is used. Leaves flexibility to switch to CRC32.
const APP_B_CRC_ADDR: u32 = APP_B_END_ADDR - 4; // 0x1FFFC
pub const APP_B_END_ADDR: u32 = 0x20000;
pub const APP_IMG_SZ: u32 = 0xE800;
pub const APP_IMG_SZ: u32 = APP_B_END_ADDR - APP_A_END_ADDR / 2;
static_assertions::const_assert!((APP_B_END_ADDR - BOOTLOADER_END_ADDR) % 2 == 0);
pub const VECTOR_TABLE_OFFSET: u32 = 0x0;
pub const VECTOR_TABLE_LEN: u32 = 0xC0;