f95a11eff5
This adds the initial framework for the Glinda SoC, based on what's been done for Morgana already. I believe that there's more that can be made common, but that work will continue as both platforms are developed. Signed-off-by: Martin Roth <martin.roth@amd.corp-partner.google.com> Change-Id: I43d0fdb711c441dc410a14f6bb04b808abefe920 Reviewed-on: https://review.coreboot.org/c/coreboot/+/68684 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* TODO: Update for Glinda */
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#include <stdint.h>
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#include <amdblocks/acpimmio.h>
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#include <amdblocks/aoac.h>
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#include <soc/aoac_defs.h>
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#include <soc/southbridge.h>
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#include <delay.h>
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#define FCH_AOAC_UART_FOR_CONSOLE \
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(CONFIG_UART_FOR_CONSOLE == 0 ? FCH_AOAC_DEV_UART0 \
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: CONFIG_UART_FOR_CONSOLE == 1 ? FCH_AOAC_DEV_UART1 \
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: CONFIG_UART_FOR_CONSOLE == 2 ? FCH_AOAC_DEV_UART2 \
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: CONFIG_UART_FOR_CONSOLE == 3 ? FCH_AOAC_DEV_UART3 \
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: CONFIG_UART_FOR_CONSOLE == 4 ? FCH_AOAC_DEV_UART4 \
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: -1)
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#if CONFIG(AMD_SOC_CONSOLE_UART) && FCH_AOAC_UART_FOR_CONSOLE == -1
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# error Unsupported UART_FOR_CONSOLE chosen
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#endif
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/*
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* Table of devices that need their AOAC registers enabled and waited
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* upon (usually about .55 milliseconds). Instead of individual delays
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* waiting for each device to become available, a single delay will be
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* executed. The console UART is handled separately from this table.
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*
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* TODO: Find out which I2C controllers we really need to enable here.
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*/
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const static unsigned int aoac_devs[] = {
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FCH_AOAC_DEV_AMBA,
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FCH_AOAC_DEV_I2C0,
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FCH_AOAC_DEV_I2C1,
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FCH_AOAC_DEV_I2C2,
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FCH_AOAC_DEV_I2C3,
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FCH_AOAC_DEV_ESPI,
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};
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void wait_for_aoac_enabled(unsigned int dev)
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{
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while (!is_aoac_device_enabled(dev))
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udelay(100);
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}
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void enable_aoac_devices(void)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(aoac_devs); i++)
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power_on_aoac_device(aoac_devs[i]);
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if (CONFIG(AMD_SOC_CONSOLE_UART))
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power_on_aoac_device(FCH_AOAC_UART_FOR_CONSOLE);
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/* Wait for AOAC devices to indicate power and clock OK */
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for (i = 0; i < ARRAY_SIZE(aoac_devs); i++)
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wait_for_aoac_enabled(aoac_devs[i]);
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if (CONFIG(AMD_SOC_CONSOLE_UART))
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wait_for_aoac_enabled(FCH_AOAC_UART_FOR_CONSOLE);
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}
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