soc/amd/picasso: Move aoac functions to new file

This functionality is needed in the PSP and I can't include all of
southbridge.c.

BUG=b:153001807
TEST=Made sure trembyle still compiles

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I3a38c655588d7836e1bd033e958a505774de871e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42324
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 0 insertions, 81 deletions

diff --git a/src/soc/amd/picasso/southbridge.c b/src/soc/amd/picasso/southbridge.c
index d2904d894bee..54128abe5d34 100644
--- a/src/soc/amd/picasso/southbridge.c
+++ b/src/soc/amd/picasso/southbridge.c
@@ -28,30 +28,6 @@
 #include <types.h>
 #include "chip.h"
 
-#define FCH_AOAC_UART_FOR_CONSOLE \
-		(CONFIG_UART_FOR_CONSOLE == 0 ? FCH_AOAC_DEV_UART0 \
-		: CONFIG_UART_FOR_CONSOLE == 1 ? FCH_AOAC_DEV_UART1 \
-		: CONFIG_UART_FOR_CONSOLE == 2 ? FCH_AOAC_DEV_UART2 \
-		: CONFIG_UART_FOR_CONSOLE == 3 ? FCH_AOAC_DEV_UART3 \
-		: -1)
-#if FCH_AOAC_UART_FOR_CONSOLE == -1
-# error Unsupported UART_FOR_CONSOLE chosen
-#endif
-
-/*
- * Table of devices that need their AOAC registers enabled and waited
- * upon (usually about .55 milliseconds). Instead of individual delays
- * waiting for each device to become available, a single delay will be
- * executed.  The console UART is handled separately from this table.
- */
-const static int aoac_devs[] = {
-	FCH_AOAC_DEV_AMBA,
-	FCH_AOAC_DEV_I2C2,
-	FCH_AOAC_DEV_I2C3,
-	FCH_AOAC_DEV_I2C4,
-	FCH_AOAC_DEV_ESPI,
-};
-
 /*
  * Table of APIC register index and associated IRQ name. Using IDX_XXX_NAME
  * provides a visible association with the index, therefore helping
@@ -111,63 +87,6 @@ const struct irq_idx_name *sb_get_apic_reg_association(size_t *size)
 	return irq_association;
 }
 
-static void power_on_aoac_device(int dev)
-{
-	uint8_t byte;
-
-	/* Power on the UART and AMBA devices */
-	byte = aoac_read8(AOAC_DEV_D3_CTL(dev));
-	byte |= FCH_AOAC_PWR_ON_DEV;
-	aoac_write8(AOAC_DEV_D3_CTL(dev), byte);
-}
-
-static bool is_aoac_device_enabled(int dev)
-{
-	uint8_t byte;
-
-	byte = aoac_read8(AOAC_DEV_D3_STATE(dev));
-	byte &= (FCH_AOAC_PWR_RST_STATE | FCH_AOAC_RST_CLK_OK_STATE);
-	if (byte == (FCH_AOAC_PWR_RST_STATE | FCH_AOAC_RST_CLK_OK_STATE))
-		return true;
-	else
-		return false;
-}
-
-static void enable_aoac_console_uart(void)
-{
-	if (!CONFIG(PICASSO_UART))
-		return;
-
-	power_on_aoac_device(FCH_AOAC_UART_FOR_CONSOLE);
-}
-
-static bool is_aoac_console_uart_enabled(void)
-{
-	if (!CONFIG(PICASSO_UART))
-		return true;
-
-	return is_aoac_device_enabled(FCH_AOAC_UART_FOR_CONSOLE);
-}
-
-void enable_aoac_devices(void)
-{
-	bool status;
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(aoac_devs); i++)
-		power_on_aoac_device(aoac_devs[i]);
-	enable_aoac_console_uart();
-
-	/* Wait for AOAC devices to indicate power and clock OK */
-	do {
-		udelay(100);
-		status = true;
-		for (i = 0; i < ARRAY_SIZE(aoac_devs); i++)
-			status &= is_aoac_device_enabled(aoac_devs[i]);
-		status &= is_aoac_console_uart_enabled();
-	} while (!status);
-}
-
 static void sb_enable_cf9_io(void)
 {
 	uint32_t reg = pm_read32(PM_DECODE_EN);