Julius Werner has submitted this change and it was merged. ( https://review.coreboot.org/c/coreboot/+/31516 )
Change subject: soc/mediatek/mt8183: Support SSPM ......................................................................
soc/mediatek/mt8183: Support SSPM
SSPM is "Secure System Power Manager" that provides power control in secure domain. The initialization flow is to load SSPM firmware to its SRAM space and then enable.
BUG=b:80501386 BRANCH=none Test=Build pass
Change-Id: I4ae6034454326f5115cd3948819adc448b67fb1c Signed-off-by: Erin Lo erin.lo@mediatek.com Reviewed-on: https://review.coreboot.org/c/coreboot/+/31516 Reviewed-by: Julius Werner jwerner@chromium.org Reviewed-by: Hung-Te Lin hungte@chromium.org Tested-by: build bot (Jenkins) no-reply@coreboot.org --- M src/soc/mediatek/mt8183/Makefile.inc M src/soc/mediatek/mt8183/include/soc/addressmap.h A src/soc/mediatek/mt8183/include/soc/sspm.h A src/soc/mediatek/mt8183/sspm.c 4 files changed, 72 insertions(+), 0 deletions(-)
Approvals: build bot (Jenkins): Verified Julius Werner: Looks good to me, approved Hung-Te Lin: Looks good to me, but someone else must approve
diff --git a/src/soc/mediatek/mt8183/Makefile.inc b/src/soc/mediatek/mt8183/Makefile.inc index d35a07e..0a79ed7 100644 --- a/src/soc/mediatek/mt8183/Makefile.inc +++ b/src/soc/mediatek/mt8183/Makefile.inc @@ -49,6 +49,7 @@ ramstage-y += ../common/rtc.c rtc.c ramstage-y += soc.c ramstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c +ramstage-y += sspm.c ramstage-y += ../common/timer.c ramstage-y += ../common/uart.c ramstage-y += ../common/usb.c diff --git a/src/soc/mediatek/mt8183/include/soc/addressmap.h b/src/soc/mediatek/mt8183/include/soc/addressmap.h index e9f80d1..0f085b2 100644 --- a/src/soc/mediatek/mt8183/include/soc/addressmap.h +++ b/src/soc/mediatek/mt8183/include/soc/addressmap.h @@ -34,6 +34,8 @@ EMI_BASE = IO_PHYS + 0x00219000, EMI_MPU_BASE = IO_PHYS + 0x00226000, DRAMC_CH_BASE = IO_PHYS + 0x00228000, + SSPM_SRAM_BASE = IO_PHYS + 0x00400000, + SSPM_CFG_BASE = IO_PHYS + 0x00440000, AUXADC_BASE = IO_PHYS + 0x01001000, UART0_BASE = IO_PHYS + 0x01002000, SPI0_BASE = IO_PHYS + 0x0100A000, diff --git a/src/soc/mediatek/mt8183/include/soc/sspm.h b/src/soc/mediatek/mt8183/include/soc/sspm.h new file mode 100644 index 0000000..627088f --- /dev/null +++ b/src/soc/mediatek/mt8183/include/soc/sspm.h @@ -0,0 +1,27 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2019 MediaTek Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef SOC_MEDIATEK_MT8183_SSPM_H +#define SOC_MEDIATEK_MT8183_SSPM_H + +#include <soc/addressmap.h> +#include <types.h> + +struct mt8183_sspm_regs { + u32 sw_rstn; +}; +static struct mt8183_sspm_regs *const mt8183_sspm = (void *)SSPM_CFG_BASE; +void sspm_init(void); +#endif /* SOC_MEDIATEK_MT8183_SSPM_H */ diff --git a/src/soc/mediatek/mt8183/sspm.c b/src/soc/mediatek/mt8183/sspm.c new file mode 100644 index 0000000..559034e --- /dev/null +++ b/src/soc/mediatek/mt8183/sspm.c @@ -0,0 +1,42 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2019 MediaTek Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/barrier.h> +#include <cbfs.h> +#include <console/console.h> +#include <arch/mmio.h> +#include <soc/sspm.h> +#include <string.h> + +#define BUF_SIZE (64 * KiB) +static uint8_t sspm_bin[BUF_SIZE] __aligned(8); + +void sspm_init(void) +{ + const char *file_name = "sspm.bin"; + size_t fw_size = cbfs_boot_load_file(file_name, + sspm_bin, + sizeof(sspm_bin), + CBFS_TYPE_RAW); + + if (fw_size == 0) + die("SSPM file :sspm.bin not found."); + + memcpy((void *)SSPM_SRAM_BASE, sspm_bin, fw_size); + /* Memory barrier to ensure that all fw code is loaded + before we release the reset pin. */ + mb(); + write32(&mt8183_sspm->sw_rstn, 0x1); +}