src/soc/amd/genoa_poc/aoac.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <stdint.h>
   4 #include <amdblocks/acpimmio.h>
   5 #include <amdblocks/aoac.h>
   6 #include <soc/aoac_defs.h>
   7 #include <soc/southbridge.h>
   8 #include <delay.h>
   9
  10 #define FCH_AOAC_UART_FOR_CONSOLE \
  11                 (CONFIG_UART_FOR_CONSOLE == 0 ? FCH_AOAC_DEV_UART0 \
  12                 : CONFIG_UART_FOR_CONSOLE == 1 ? FCH_AOAC_DEV_UART1 \
  13                 : CONFIG_UART_FOR_CONSOLE == 2 ? FCH_AOAC_DEV_UART2 \
  14                 : -1)
  15 #if CONFIG(AMD_SOC_CONSOLE_UART) && FCH_AOAC_UART_FOR_CONSOLE == -1
  16 # error Unsupported UART_FOR_CONSOLE chosen
  17 #endif
  18
  19 void wait_for_aoac_enabled(unsigned int dev)
  20 {
  21         while (!is_aoac_device_enabled(dev))
  22                 udelay(100);
  23 }
  24
  25 void enable_aoac_devices(void)
  26 {
  27         if (CONFIG(AMD_SOC_CONSOLE_UART))
  28                 power_on_aoac_device(FCH_AOAC_UART_FOR_CONSOLE);
  29
  30         if (CONFIG(AMD_SOC_CONSOLE_UART))
  31                 wait_for_aoac_enabled(FCH_AOAC_UART_FOR_CONSOLE);
  32 }