mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 03:08:31 +00:00
cba586b400
For i.MX6, the bootmode determine code is part of spl_boot_device, but there is might be a possibility for other part the code need to check the desired boot mode for adding new functionalities like modeboot env variable, or changing boot order etc. So introduced imx6_src_get_boot_mode which actually reading the boot mode register for desired modes. More cleanup will be add in future patches. Cc: Stefano Babic <sbabic@denx.de> Cc: Tim Harvey <tharvey@gateworks.com> Cc: Matteo Lisi <matteo.lisi@engicam.com> Cc: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by: Jagan Teki <jagan@openedev.com> Reviewed-by: Stefano Babic <sbabic@denx.de>
129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
/*
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* Copyright 2015 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <asm/io.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/imx-common/boot_mode.h>
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#include <asm/arch/crm_regs.h>
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void init_aips(void)
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{
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struct aipstz_regs *aips1, *aips2, *aips3;
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aips1 = (struct aipstz_regs *)AIPS1_BASE_ADDR;
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aips2 = (struct aipstz_regs *)AIPS2_BASE_ADDR;
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aips3 = (struct aipstz_regs *)AIPS3_BASE_ADDR;
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/*
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* Set all MPROTx to be non-bufferable, trusted for R/W,
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* not forced to user-mode.
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*/
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writel(0x77777777, &aips1->mprot0);
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writel(0x77777777, &aips1->mprot1);
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writel(0x77777777, &aips2->mprot0);
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writel(0x77777777, &aips2->mprot1);
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/*
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* Set all OPACRx to be non-bufferable, not require
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* supervisor privilege level for access,allow for
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* write access and untrusted master access.
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*/
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writel(0x00000000, &aips1->opacr0);
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writel(0x00000000, &aips1->opacr1);
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writel(0x00000000, &aips1->opacr2);
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writel(0x00000000, &aips1->opacr3);
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writel(0x00000000, &aips1->opacr4);
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writel(0x00000000, &aips2->opacr0);
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writel(0x00000000, &aips2->opacr1);
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writel(0x00000000, &aips2->opacr2);
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writel(0x00000000, &aips2->opacr3);
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writel(0x00000000, &aips2->opacr4);
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if (is_mx6ull() || is_mx6sx() || is_mx7()) {
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/*
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* Set all MPROTx to be non-bufferable, trusted for R/W,
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* not forced to user-mode.
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*/
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writel(0x77777777, &aips3->mprot0);
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writel(0x77777777, &aips3->mprot1);
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/*
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* Set all OPACRx to be non-bufferable, not require
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* supervisor privilege level for access,allow for
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* write access and untrusted master access.
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*/
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writel(0x00000000, &aips3->opacr0);
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writel(0x00000000, &aips3->opacr1);
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writel(0x00000000, &aips3->opacr2);
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writel(0x00000000, &aips3->opacr3);
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writel(0x00000000, &aips3->opacr4);
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}
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}
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void imx_set_wdog_powerdown(bool enable)
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{
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struct wdog_regs *wdog1 = (struct wdog_regs *)WDOG1_BASE_ADDR;
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struct wdog_regs *wdog2 = (struct wdog_regs *)WDOG2_BASE_ADDR;
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struct wdog_regs *wdog3 = (struct wdog_regs *)WDOG3_BASE_ADDR;
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#ifdef CONFIG_MX7D
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struct wdog_regs *wdog4 = (struct wdog_regs *)WDOG4_BASE_ADDR;
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#endif
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/* Write to the PDE (Power Down Enable) bit */
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writew(enable, &wdog1->wmcr);
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writew(enable, &wdog2->wmcr);
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if (is_mx6sx() || is_mx6ul() || is_mx7())
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writew(enable, &wdog3->wmcr);
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#ifdef CONFIG_MX7D
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writew(enable, &wdog4->wmcr);
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#endif
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}
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#define SRC_SCR_WARM_RESET_ENABLE 0
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void init_src(void)
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{
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struct src *src_regs = (struct src *)SRC_BASE_ADDR;
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u32 val;
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/*
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* force warm reset sources to generate cold reset
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* for a more reliable restart
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*/
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val = readl(&src_regs->scr);
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val &= ~(1 << SRC_SCR_WARM_RESET_ENABLE);
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writel(val, &src_regs->scr);
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}
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#ifdef CONFIG_CMD_BMODE
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void boot_mode_apply(unsigned cfg_val)
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{
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unsigned reg;
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struct src *psrc = (struct src *)SRC_BASE_ADDR;
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writel(cfg_val, &psrc->gpr9);
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reg = readl(&psrc->gpr10);
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if (cfg_val)
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reg |= 1 << 28;
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else
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reg &= ~(1 << 28);
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writel(reg, &psrc->gpr10);
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}
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#endif
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#if defined(CONFIG_MX6)
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u32 imx6_src_get_boot_mode(void)
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{
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struct src *psrc = (struct src *)SRC_BASE_ADDR;
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if (imx6_is_bmode_from_gpr9())
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return readl(&psrc->gpr9);
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else
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return readl(&psrc->sbmr1);
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}
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#endif
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