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| author | Marshall Dawson <marshalldawson3rd@gmail.com> | 2019-06-20 10:29:29 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2019-10-20 16:42:09 +0000 |
| commit | c0b8d0d5b5bd3f43e607ee317447d0a27fb5d474 (patch) | |
| tree | 58f8e86bd3c5336c161b6caf57ecd530a4cd9684 /src/soc/amd/picasso/Kconfig | |
| parent | 0d441daef6e7ca4d43360058b960ccab8d2d21b5 (diff) | |
| download | coreboot-c0b8d0d5b5bd3f43e607ee317447d0a27fb5d474.tar.xz | |
soc/amd/picasso: Update UARTs
Add a function to uart.c to ensure the right IOMux settings are
programmed for the console UART. Update Kconfig to reflect the
new addresses.
Give the user the ability to downclock the UARTs' refclock to
1.8342MHz.
Add the abiltiy to use an APU UART at a legacy I/O address.
Update the AOAC register configuration for the two additional
UARTs.
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Change-Id: I74579674544f0edd2c0e6c4963270b442668e62f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33767
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc/amd/picasso/Kconfig')
| -rw-r--r-- | src/soc/amd/picasso/Kconfig | 44 |
1 files changed, 37 insertions, 7 deletions
diff --git a/src/soc/amd/picasso/Kconfig b/src/soc/amd/picasso/Kconfig index 6d0a3efff4..5af830cc83 100644 --- a/src/soc/amd/picasso/Kconfig +++ b/src/soc/amd/picasso/Kconfig @@ -157,16 +157,46 @@ config PICASSO_UART select NO_UART_ON_SUPERIO select UART_OVERRIDE_REFCLK help - There are two UART controllers in Picasso. - The UART registers are memory-mapped. UART - controller 0 registers range from FEDC_6000h - to FEDC_6FFFh. UART controller 1 registers - range from FEDC_8000h to FEDC_8FFFh. + There are four memory-mapped UARTs controllers in Picasso at: + 0: 0xfedc9000 + 1: 0xfedca000 + 2: 0xfedc3000 + 3: 0xfedcf000 + +choice PICASSO_UART_CLOCK_SOURCE + prompt "UART Frequency" + depends on PICASSO_UART + default PICASSO_UART_48MZ + +config PICASSO_UART_48MZ + bool "48 MHz clock" + help + Select this option for the most compatibility. + +config PICASSO_UART_1_8MZ + bool "1.8432 MHz clock" + help + Select this option if an old payload or Linux ttyS0 arguments + require it. + +endchoice + +config PICASSO_UART_LEGACY + bool "Decode legacy I/O range" + depends on PICASSO_UART + help + Assign I/O 3F8, 2F8, etc. to a Picasso UART. Only a single UART may + decode legacy addresses and this option enables the one used for the + console. A UART accessed with I/O does not allow all the features + of MMIO. The MMIO decode is still present when this option is used. config CONSOLE_UART_BASE_ADDRESS - depends on CONSOLE_SERIAL + depends on CONSOLE_SERIAL && PICASSO_UART hex - default 0xfedc6000 + default 0xfedc9000 if UART_FOR_CONSOLE = 0 + default 0xfedca000 if UART_FOR_CONSOLE = 1 + default 0xfedc3000 if UART_FOR_CONSOLE = 2 + default 0xfedcf000 if UART_FOR_CONSOLE = 3 config SMM_TSEG_SIZE hex |