diff options
| author | Vincent Palatin <vpalatin@chromium.org> | 2018-05-18 15:47:45 +0200 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-06-04 17:23:27 -0700 |
| commit | eee7778fcfc5e555d119cff65caa7c045343e356 (patch) | |
| tree | a5e43bc8e5f85345f204b725a68cbdfcadd9f6a1 /common/uart_buffering.c | |
| parent | b49d5872e9eacae9cee17c9bf011835bc5e3eb45 (diff) | |
| download | chrome-ec-eee7778fcfc5e555d119cff65caa7c045343e356.tar.gz | |
stm32: use D-cache on STM32H7
Enable the D-cache on STM32H7.
Use the ahb4 RAM region as uncached memory for DMA buffers.
Mark the serial, SPI and fingerprint DMA buffers as uncached for proper
operations.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=poppy
BUG=b:78535052, b:75068419
TEST=On ZerbleBarn, run fingerprint match.
CQ-DEPEND=CL:*616448
Change-Id: Ia33496ebde3508d3427e522cc7ba060829f8f3fd
Reviewed-on: https://chromium-review.googlesource.com/1065822
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Diffstat (limited to 'common/uart_buffering.c')
| -rw-r--r-- | common/uart_buffering.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/common/uart_buffering.c b/common/uart_buffering.c index 439d7cce28..1f9f57f18a 100644 --- a/common/uart_buffering.c +++ b/common/uart_buffering.c @@ -11,6 +11,7 @@ #include "console.h" #include "hooks.h" #include "host_command.h" +#include "link_defs.h" #include "printf.h" #include "system.h" #include "task.h" @@ -36,10 +37,10 @@ (CONFIG_UART_RX_DMA_RECHECKS + 1)) /* Transmit and receive buffers */ -static volatile char tx_buf[CONFIG_UART_TX_BUF_SIZE]; +static volatile char tx_buf[CONFIG_UART_TX_BUF_SIZE] __uncached; static volatile int tx_buf_head; static volatile int tx_buf_tail; -static volatile char rx_buf[CONFIG_UART_RX_BUF_SIZE]; +static volatile char rx_buf[CONFIG_UART_RX_BUF_SIZE] __uncached; static volatile int rx_buf_head; static volatile int rx_buf_tail; static int tx_snapshot_head; |