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PICO: Linker script and flash config updates.

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Linker script based on rp2350/memmap_default.ld from pico-sdk.
Fix to flash config (erase on sector boundaries).
This commit is contained in:
Matthew Selby 2025-05-13 10:03:04 +01:00
parent 22738b6492
commit c46c3825a0
2 changed files with 301 additions and 212 deletions
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13
src/platform/PICO/config_flash.c
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@ -47,19 +47,22 @@ void configClearFlags(void)
configStreamerResult_e configWriteWord(uintptr_t address, config_streamer_buffer_type_t *buffer)
{
// TODO: synchronise second core... see e.g. pico-examples flash_program, uses flash_safe_execute.
// pico-sdk flash_range functions use the offset from start of FLASH
uint32_t flash_offs = address - XIP_BASE;
uint32_t interrupts = save_and_disable_interrupts();
if (address == __config_start) {
if ((flash_offs % FLASH_SECTOR_SIZE) == 0) {
// Erase the flash sector before writing
flash_range_erase(address, FLASH_PAGE_SIZE);
flash_range_erase(flash_offs, FLASH_SECTOR_SIZE);
}
STATIC_ASSERT(CONFIG_STREAMER_BUFFER_SIZE == sizeof(config_streamer_buffer_type_t) * CONFIG_STREAMER_BUFFER_SIZE, "CONFIG_STREAMER_BUFFER_SIZE does not match written size");
// Write data to flash
// TODO: synchronise second core...
flash_range_program(address, buffer, CONFIG_STREAMER_BUFFER_SIZE);
flash_range_program(flash_offs, buffer, CONFIG_STREAMER_BUFFER_SIZE);
restore_interrupts(interrupts);
return CONFIG_RESULT_SUCCESS;