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barebox/arch/arm/boards/zii-imx6q-rdu2/lowlevel.c

67 lines
1.6 KiB
C

/*
* Copyright (C) 2016 Zodiac Inflight Innovation
* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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 <debug_ll.h>
#include <common.h>
#include <mach/esdctl.h>
#include <mach/generic.h>
#include <mach/imx6.h>
#include <asm/barebox-arm.h>
static inline void setup_uart(void)
{
void __iomem *iomuxbase = IOMEM(MX6_IOMUXC_BASE_ADDR);
imx6_ungate_all_peripherals();
writel(0x1b0b1, iomuxbase + 0x0650);
writel(3, iomuxbase + 0x0280);
writel(0x1b0b1, iomuxbase + 0x0654);
writel(3, iomuxbase + 0x0284);
writel(1, iomuxbase + 0x0920);
imx6_uart_setup_ll();
putc_ll('>');
}
extern char __dtb_imx6q_zii_rdu2_start[];
extern char __dtb_imx6qp_zii_rdu2_start[];
ENTRY_FUNCTION(start_imx6q_zii_rdu2, r0, r1, r2)
{
void *fdt = __dtb_imx6q_zii_rdu2_start;
imx6_cpu_lowlevel_init();
if (IS_ENABLED(CONFIG_DEBUG_LL))
setup_uart();
imx6q_barebox_entry(fdt - get_runtime_offset());
}
ENTRY_FUNCTION(start_imx6qp_zii_rdu2, r0, r1, r2)
{
void *fdt = __dtb_imx6qp_zii_rdu2_start;
imx6_cpu_lowlevel_init();
if (IS_ENABLED(CONFIG_DEBUG_LL))
setup_uart();
imx6q_barebox_entry(fdt - get_runtime_offset());
}