// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2018 Zodiac Inflight Innovation * Author: Andrey Smirnov <andrew.smirnov@gmail.com> */ #include <debug_ll.h> #include <io.h> #include <common.h> #include <linux/sizes.h> #include <mach/generic.h> #include <asm/barebox-arm-head.h> #include <asm/barebox-arm.h> #include <mach/imx7-ccm-regs.h> #include <mach/iomux-mx7.h> #include <mach/debug_ll.h> #include <asm/cache.h> #include <mach/esdctl.h> extern char __dtb_imx7d_zii_rpu2_start[]; static inline void setup_uart(void) { void __iomem *iomux = IOMEM(MX7_IOMUXC_BASE_ADDR); void __iomem *ccm = IOMEM(MX7_CCM_BASE_ADDR); writel(CCM_CCGR_SETTINGn_NEEDED(0), ccm + CCM_CCGRn_CLR(CCM_CCGR_UART2)); writel(CCM_TARGET_ROOTn_ENABLE | UART2_CLK_ROOT__OSC_24M, ccm + CCM_TARGET_ROOTn(UART2_CLK_ROOT)); writel(CCM_CCGR_SETTINGn_NEEDED(0), ccm + CCM_CCGRn_SET(CCM_CCGR_UART2)); mx7_setup_pad(iomux, MX7D_PAD_UART2_TX_DATA__UART2_DCE_TX); imx7_uart_setup_ll(); putc_ll('>'); } ENTRY_FUNCTION(start_zii_imx7d_rpu2, r0, r1, r2) { imx7_cpu_lowlevel_init(); if (IS_ENABLED(CONFIG_DEBUG_LL)) setup_uart(); imx7d_barebox_entry(__dtb_imx7d_zii_rpu2_start + get_runtime_offset()); }