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flash/nor/rp2040: Avoid ROM call timeout on long erases by splitting into chunks

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Also add keep_alive() to erase/program to avoid nasty GDB message.

TV: Fixed style problems.

Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Signed-off-by: Luke Wren <luke@raspberrypi.com>
Change-Id: Ibb18775aeed192361ae1585bfdaad03760583cf3
Reviewed-on: https://review.openocd.org/c/openocd/+/8444
Tested-by: jenkins
Reviewed-by: Jonathan Bell <jonathan@raspberrypi.com>
This commit is contained in:
Luke Wren
2024-07-25 10:55:41 +01:00
committed by Tomas Vanek
parent 2e8e1a3da3
commit ca966d3d7f
1 changed files with 47 additions and 16 deletions
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63
src/flash/nor/rp2040.c
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@@ -510,11 +510,10 @@ static int rp2xxx_call_rom_func_batch(struct target *target, struct rp2040_flash
}
if (err != ERROR_OK) {
LOG_ERROR("Failed to call ROM function batch\n");
/* This case is hit when loading new ROM images on FPGA, but can also be
hit on real hardware if you swap two devices with different ROM
versions without restarting OpenOCD: */
LOG_INFO("Repopulating ROM address cache after failed ROM call");
/* We ignore the error because we have already failed, this is just
/* This case is hit when loading new ROM images on FPGA, but can also be hit on real
hardware if you swap two devices with different ROM versions without restarting OpenOCD: */
LOG_ROM_SYMBOL_DEBUG("Repopulating ROM address cache after failed ROM call");
/* We ignore the error on this next call because we have already failed, this is just
recovery for the next attempt. */
(void)rp2xxx_populate_rom_pointer_cache(target, priv);
return err;
@@ -757,6 +756,7 @@ static int rp2040_flash_write(struct flash_bank *bank, const uint8_t *buffer, ui
write_size /* count */
};
err = rp2xxx_call_rom_func(target, priv, priv->jump_flash_range_program, args, ARRAY_SIZE(args));
keep_alive();
if (err != ERROR_OK) {
LOG_ERROR("Failed to invoke flash programming code on target");
break;
@@ -820,19 +820,50 @@ static int rp2040_flash_erase(struct flash_bank *bank, unsigned int first, unsig
if (err != ERROR_OK)
goto cleanup_and_return;
LOG_DEBUG("Remote call flash_range_erase");
uint32_t offset_next = bank->sectors[first].offset;
uint32_t offset_last = bank->sectors[last].offset + bank->sectors[last].size - bank->sectors[first].offset;
uint32_t args[4] = {
bank->sectors[first].offset, /* addr */
bank->sectors[last].offset + bank->sectors[last].size - bank->sectors[first].offset, /* count */
65536, /* block_size */
0xd8 /* block_cmd */
};
/* Break erase into multiple calls to avoid timeout on large erase. Choose 128k chunk which has
fairly low ROM call overhead and empirically seems to avoid the default keep_alive() limit
as well as our ROM call timeout. */
const uint32_t erase_chunk_size = 128 * 1024;
/* Promote log level for long erases to provide feedback */
bool requires_loud_prints = offset_last - offset_next >= 2 * erase_chunk_size;
enum log_levels chunk_log_level = requires_loud_prints ? LOG_LVL_INFO : LOG_LVL_DEBUG;
while (offset_next < offset_last) {
uint32_t remaining = offset_last - offset_next;
uint32_t call_size = remaining < erase_chunk_size ? remaining : erase_chunk_size;
/* Shorten the first call of a large erase if necessary to align subsequent calls */
if (offset_next % erase_chunk_size != 0 && call_size == erase_chunk_size)
call_size = erase_chunk_size - offset_next % erase_chunk_size;
LOG_CUSTOM_LEVEL(chunk_log_level,
" Erase chunk: 0x%08" PRIx32 " -> 0x%08" PRIx32,
offset_next,
offset_next + call_size - 1
);
/* This ROM function uses the optimal mixture of 4k 20h and 64k D8h erases, without
over-erase. This is why we force the flash_bank sector size attribute to 4k even if
OpenOCD prefers to give the block size instead. */
uint32_t args[4] = {
offset_next,
call_size,
65536, /* block_size */
0xd8 /* block_cmd */
};
err = rp2xxx_call_rom_func(bank->target, priv, priv->jump_flash_range_erase, args, ARRAY_SIZE(args));
keep_alive();
if (err != ERROR_OK)
break;
offset_next += call_size;
}
/* This ROM function will use the optimal mixture of 4k 20h and 64k D8h
erases, without over-erase, as long as you just tell OpenOCD that your
flash is made up of 4k sectors instead of letting it try to guess. */
err = rp2xxx_call_rom_func(bank->target, priv, priv->jump_flash_range_erase, args, ARRAY_SIZE(args));
cleanup_and_return:
cleanup_after_raw_flash_cmd(bank);