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[OpenOCD-commit] Main OpenOCD repository branch, master, updated. v0.12.0-rc1-18-g47ed1c1ea
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From: OpenOCD-Gerrit <ope...@us...> - 2022-09-27 08:39:21
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- Log -----------------------------------------------------------------
commit 47ed1c1eab82ee329915e04ea61f857dae89fc6a
Author: Tomas Vanek <va...@fb...>
Date: Sun Sep 11 11:18:29 2022 +0200
flash/nor/rp2040: fix memory leak of target stack workarea
While on it restore memory-mapped mode also after flash erase
(originally was restored after flash write only).
Change-Id: I5e153b79ac27a8439f57239ce90ce8a79c0bb8a1
Signed-off-by: Tomas Vanek <va...@fb...>
Reviewed-on: https://review.openocd.org/c/openocd/+/7186
Tested-by: jenkins
Reviewed-by: Antonio Borneo <bor...@gm...>
diff --git a/src/flash/nor/rp2040.c b/src/flash/nor/rp2040.c
index ba21d1c0f..1c57424f9 100644
--- a/src/flash/nor/rp2040.c
+++ b/src/flash/nor/rp2040.c
@@ -138,6 +138,43 @@ static int rp2040_call_rom_func(struct target *target, struct rp2040_flash_bank
}
+/* Finalize flash write/erase/read ID
+ * - flush cache
+ * - enters memory-mapped (XIP) mode to make flash data visible
+ * - deallocates target ROM func stack if previously allocated
+ */
+static int rp2040_finalize_stack_free(struct flash_bank *bank)
+{
+ struct rp2040_flash_bank *priv = bank->driver_priv;
+ struct target *target = bank->target;
+
+ /* Always flush before returning to execute-in-place, to invalidate stale
+ * cache contents. The flush call also restores regular hardware-controlled
+ * chip select following a rp2040_flash_exit_xip().
+ */
+ LOG_DEBUG("Flushing flash cache after write behind");
+ int err = rp2040_call_rom_func(target, priv, priv->jump_flush_cache, NULL, 0);
+ if (err != ERROR_OK) {
+ LOG_ERROR("Failed to flush flash cache");
+ /* Intentionally continue after error and try to setup xip anyway */
+ }
+
+ LOG_DEBUG("Configuring SSI for execute-in-place");
+ err = rp2040_call_rom_func(target, priv, priv->jump_enter_cmd_xip, NULL, 0);
+ if (err != ERROR_OK)
+ LOG_ERROR("Failed to set SSI to XIP mode");
+
+ target_free_working_area(target, priv->stack);
+ priv->stack = NULL;
+ return err;
+}
+
+/* Prepare flash write/erase/read ID
+ * - allocates a stack for target ROM func
+ * - switches the SPI interface from memory-mapped mode to direct command mode
+ * Always pair with a call of rp2040_finalize_stack_free()
+ * after flash operation finishes or fails.
+ */
static int rp2040_stack_grab_and_prep(struct flash_bank *bank)
{
struct rp2040_flash_bank *priv = bank->driver_priv;
@@ -154,14 +191,14 @@ static int rp2040_stack_grab_and_prep(struct flash_bank *bank)
LOG_DEBUG("Connecting internal flash");
err = rp2040_call_rom_func(target, priv, priv->jump_connect_internal_flash, NULL, 0);
if (err != ERROR_OK) {
- LOG_ERROR("RP2040 erase: failed to connect internal flash");
+ LOG_ERROR("Failed to connect internal flash");
return err;
}
LOG_DEBUG("Kicking flash out of XIP mode");
err = rp2040_call_rom_func(target, priv, priv->jump_flash_exit_xip, NULL, 0);
if (err != ERROR_OK) {
- LOG_ERROR("RP2040 erase: failed to exit flash XIP mode");
+ LOG_ERROR("Failed to exit flash XIP mode");
return err;
}
@@ -174,16 +211,17 @@ static int rp2040_flash_write(struct flash_bank *bank, const uint8_t *buffer, ui
struct rp2040_flash_bank *priv = bank->driver_priv;
struct target *target = bank->target;
- struct working_area *bounce;
+ struct working_area *bounce = NULL;
int err = rp2040_stack_grab_and_prep(bank);
if (err != ERROR_OK)
- return err;
+ goto cleanup;
const unsigned int chunk_size = target_get_working_area_avail(target);
- if (target_alloc_working_area(target, chunk_size, &bounce) != ERROR_OK) {
+ err = target_alloc_working_area(target, chunk_size, &bounce);
+ if (err != ERROR_OK) {
LOG_ERROR("Could not allocate bounce buffer for flash programming. Can't continue");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ goto cleanup;
}
LOG_DEBUG("Allocated flash bounce buffer @" TARGET_ADDR_FMT, bounce->address);
@@ -211,23 +249,12 @@ static int rp2040_flash_write(struct flash_bank *bank, const uint8_t *buffer, ui
offset += write_size;
count -= write_size;
}
+
+cleanup:
target_free_working_area(target, bounce);
- if (err != ERROR_OK)
- return err;
+ rp2040_finalize_stack_free(bank);
- /* Flash is successfully programmed. We can now do a bit of poking to make the flash
- contents visible to us via memory-mapped (XIP) interface in the 0x1... memory region */
- LOG_DEBUG("Flushing flash cache after write behind");
- err = rp2040_call_rom_func(bank->target, priv, priv->jump_flush_cache, NULL, 0);
- if (err != ERROR_OK) {
- LOG_ERROR("RP2040 write: failed to flush flash cache");
- return err;
- }
- LOG_DEBUG("Configuring SSI for execute-in-place");
- err = rp2040_call_rom_func(bank->target, priv, priv->jump_enter_cmd_xip, NULL, 0);
- if (err != ERROR_OK)
- LOG_ERROR("RP2040 write: failed to flush flash cache");
return err;
}
@@ -240,7 +267,7 @@ static int rp2040_flash_erase(struct flash_bank *bank, unsigned int first, unsig
int err = rp2040_stack_grab_and_prep(bank);
if (err != ERROR_OK)
- return err;
+ goto cleanup;
LOG_DEBUG("Remote call flash_range_erase");
@@ -258,11 +285,14 @@ static int rp2040_flash_erase(struct flash_bank *bank, unsigned int first, unsig
https://github.com/raspberrypi/pico-bootrom/blob/master/bootrom/program_flash_generic.c
In theory, the function algorithm provides for erasing both a smaller "sector" (4096 bytes) and
- an optional larger "block" (size and command provided in args). OpenOCD's spi.c only uses "block" sizes.
+ an optional larger "block" (size and command provided in args).
*/
err = rp2040_call_rom_func(bank->target, priv, priv->jump_flash_range_erase, args, ARRAY_SIZE(args));
+cleanup:
+ rp2040_finalize_stack_free(bank);
+
return err;
}
@@ -376,11 +406,13 @@ static int rp2040_flash_probe(struct flash_bank *bank)
}
err = rp2040_stack_grab_and_prep(bank);
- if (err != ERROR_OK)
- return err;
uint32_t device_id = 0;
- err = rp2040_spi_read_flash_id(target, &device_id);
+ if (err == ERROR_OK)
+ err = rp2040_spi_read_flash_id(target, &device_id);
+
+ rp2040_finalize_stack_free(bank);
+
if (err != ERROR_OK)
return err;
-----------------------------------------------------------------------
Summary of changes:
src/flash/nor/rp2040.c | 82 +++++++++++++++++++++++++++++++++++---------------
1 file changed, 57 insertions(+), 25 deletions(-)
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