diff options
| author | Felix Held <felix-coreboot@felixheld.de> | 2021-01-13 03:16:03 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2021-01-14 15:42:46 +0000 |
| commit | 2e4fa0cb589776feb38f3530fc14b57d627670a3 (patch) | |
| tree | 8ec3a06bf5b112cb15e324fe653525dd6196c162 /src/soc | |
| parent | 62ef88f3e902c92ca9e0c20bd6abf094468eafed (diff) | |
soc/amd/cezanne: add remaining non-ACPI parts of UART support
The ACPI part still needs some more code to be in place, so add that
later.
TEST=Together with the currently not merged rest of the amdfw patch
train applied this results in working serial console in bootblock in
Majolica.
Change-Id: Ia844e86a80c19026ac5b47a5a1e91c2553ea5cca
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49378
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/amd/cezanne/uart.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/soc/amd/cezanne/uart.c b/src/soc/amd/cezanne/uart.c index 02a6d22b09..84f7c40078 100644 --- a/src/soc/amd/cezanne/uart.c +++ b/src/soc/amd/cezanne/uart.c @@ -1,8 +1,11 @@ /* SPDX-License-Identifier: GPL-2.0-only */ +#include <amdblocks/aoac.h> #include <amdblocks/gpio_banks.h> #include <amdblocks/uart.h> #include <commonlib/helpers.h> +#include <console/console.h> +#include <device/device.h> #include <device/mmio.h> #include <soc/gpio.h> #include <soc/southbridge.h> @@ -43,3 +46,35 @@ void set_uart_config(unsigned int idx) program_gpios(uart_info[idx].mux, 2); } + +/* Even though this is called enable, it gets called for both enabled and disabled devices. */ +static void uart_enable(struct device *dev) +{ + unsigned int dev_id; + + switch (dev->path.mmio.addr) { + case APU_UART0_BASE: + dev_id = FCH_AOAC_DEV_UART0; + break; + case APU_UART1_BASE: + dev_id = FCH_AOAC_DEV_UART1; + break; + default: + printk(BIOS_ERR, "%s: Unknown device: %s\n", __func__, dev_path(dev)); + return; + } + + if (dev->enabled) { + power_on_aoac_device(dev_id); + wait_for_aoac_enabled(dev_id); + } else { + power_off_aoac_device(dev_id); + } +} + +struct device_operations cezanne_uart_mmio_ops = { + .read_resources = noop_read_resources, + .set_resources = noop_set_resources, + .scan_bus = scan_static_bus, + .enable = uart_enable, +}; |