diff options
| author | Naveen Krishna Chatradhi <naveenkrishna.ch@intel.com> | 2015-07-08 14:23:06 +0530 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-07-21 20:16:48 +0200 |
| commit | a73408d608d963c989debc08953672b0e03a7fdb (patch) | |
| tree | ae9a686a51240e26109a8a8a43d31e111d688e74 /src/drivers/uart | |
| parent | 406313d46d00c74dcfc80d4721bbd774d8b83911 (diff) | |
console: Add UART8250MEM 32bit support
This patch adds UART8250MEM_32 feature flag to support
UART8250 compatible with 32bit access in memory mapped mode.
[pg: rebuilt to reuse the existing UART8250 8bit access driver
which reduces code duplication.]
Change-Id: I310e70dfab81dcca575e9931e0ccf93af70efa40
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 0c3b2c628b854e8334540ff5158c2587dbfabf95
Original-Change-Id: I07ee256f25e48480372af9a9255bf487c331e51d
Original-Signed-off-by: Rishavnath Satapathy <rishavnath.satapathy@intel.com>
Original-Signed-off-by: Naveen Krishna Chatradhi <naveenkrishna.ch@intel.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/271759
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Tested-by: Wenkai Du <wenkai.du@intel.com>
Original-Commit-Queue: Wenkai Du <wenkai.du@intel.com>
Reviewed-on: http://review.coreboot.org/10998
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/drivers/uart')
| -rw-r--r-- | src/drivers/uart/Kconfig | 5 | ||||
| -rw-r--r-- | src/drivers/uart/uart8250mem.c | 12 |
2 files changed, 17 insertions, 0 deletions
diff --git a/src/drivers/uart/Kconfig b/src/drivers/uart/Kconfig index fef745e418..cbfd47954a 100644 --- a/src/drivers/uart/Kconfig +++ b/src/drivers/uart/Kconfig @@ -17,6 +17,11 @@ config DRIVERS_UART_8250MEM bool default n +config DRIVERS_UART_8250MEM_32 + bool + default n + depends on DRIVERS_UART_8250MEM + config HAVE_UART_SPECIAL bool default n diff --git a/src/drivers/uart/uart8250mem.c b/src/drivers/uart/uart8250mem.c index 2f341f2d6e..d276fd0410 100644 --- a/src/drivers/uart/uart8250mem.c +++ b/src/drivers/uart/uart8250mem.c @@ -34,6 +34,17 @@ #define SINGLE_CHAR_TIMEOUT (50 * 1000) #define FIFO_TIMEOUT (16 * SINGLE_CHAR_TIMEOUT) +#if IS_ENABLED(CONFIG_DRIVERS_UART_8250MEM_32) +static uint8_t uart8250_read(void *base, uint8_t reg) +{ + return read32(base + 4 * reg) & 0xff; +} + +static void uart8250_write(void *base, uint8_t reg, uint8_t data) +{ + write32(base + 4 * reg, data); +} +#else static uint8_t uart8250_read(void *base, uint8_t reg) { return read8(base + reg); @@ -43,6 +54,7 @@ static void uart8250_write(void *base, uint8_t reg, uint8_t data) { write8(base + reg, data); } +#endif static int uart8250_mem_can_tx_byte(void *base) { |