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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /chip/stm32/bkpdata.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-252457d4b21f46889eebad61d4c0a65331919cec.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'chip/stm32/bkpdata.c')
-rw-r--r--chip/stm32/bkpdata.c82
1 files changed, 0 insertions, 82 deletions
diff --git a/chip/stm32/bkpdata.c b/chip/stm32/bkpdata.c
deleted file mode 100644
index 8c85366857..0000000000
--- a/chip/stm32/bkpdata.c
+++ /dev/null
@@ -1,82 +0,0 @@
-/* Copyright 2020 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include <assert.h>
-
-#include "bkpdata.h"
-#include "registers.h"
-#include "system.h" /* enum system_bbram_idx */
-#include "task.h"
-
-uint16_t bkpdata_read(enum bkpdata_index index)
-{
- if (index < 0 || index >= STM32_BKP_ENTRIES)
- return 0;
-
- if (index & 1)
- return STM32_BKP_DATA(index >> 1) >> 16;
- else
- return STM32_BKP_DATA(index >> 1) & 0xFFFF;
-}
-
-int bkpdata_write(enum bkpdata_index index, uint16_t value)
-{
- static struct mutex bkpdata_write_mutex;
- int use_mutex = !in_interrupt_context();
-
- if (index < 0 || index >= STM32_BKP_ENTRIES)
- return EC_ERROR_INVAL;
-
- /*
- * Two entries share a single 32-bit register, lock mutex to prevent
- * read/mask/write races.
- */
- if (use_mutex)
- mutex_lock(&bkpdata_write_mutex);
- if (index & 1) {
- uint32_t val = STM32_BKP_DATA(index >> 1);
- val = (val & 0x0000FFFF) | (value << 16);
- STM32_BKP_DATA(index >> 1) = val;
- } else {
- uint32_t val = STM32_BKP_DATA(index >> 1);
- val = (val & 0xFFFF0000) | value;
- STM32_BKP_DATA(index >> 1) = val;
- }
- if (use_mutex)
- mutex_unlock(&bkpdata_write_mutex);
-
- return EC_SUCCESS;
-}
-
-int bkpdata_index_lookup(enum system_bbram_idx idx, int *msb)
-{
- *msb = 0;
-
-#ifdef CONFIG_USB_PD_DUAL_ROLE
- if (idx == SYSTEM_BBRAM_IDX_PD0)
- return BKPDATA_INDEX_PD0;
- if (idx == SYSTEM_BBRAM_IDX_PD1)
- return BKPDATA_INDEX_PD1;
- if (idx == SYSTEM_BBRAM_IDX_PD2)
- return BKPDATA_INDEX_PD2;
-#endif
- return -1;
-}
-
-uint32_t bkpdata_read_reset_flags()
-{
- uint32_t flags = bkpdata_read(BKPDATA_INDEX_SAVED_RESET_FLAGS);
-
- flags |= bkpdata_read(BKPDATA_INDEX_SAVED_RESET_FLAGS_2) << 16;
-
- return flags;
-}
-
-__overridable
-void bkpdata_write_reset_flags(uint32_t save_flags)
-{
- bkpdata_write(BKPDATA_INDEX_SAVED_RESET_FLAGS, save_flags & 0xffff);
- bkpdata_write(BKPDATA_INDEX_SAVED_RESET_FLAGS_2, save_flags >> 16);
-}