2 * Copyright 2015 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
8 #include <asm/arch/imx-regs.h>
9 #include <asm/arch/clock.h>
10 #include <asm/arch/sys_proto.h>
11 #include <asm/mach-imx/boot_mode.h>
12 #include <asm/arch/crm_regs.h>
16 struct aipstz_regs *aips1, *aips2, *aips3;
18 aips1 = (struct aipstz_regs *)AIPS1_BASE_ADDR;
19 aips2 = (struct aipstz_regs *)AIPS2_BASE_ADDR;
20 aips3 = (struct aipstz_regs *)AIPS3_BASE_ADDR;
23 * Set all MPROTx to be non-bufferable, trusted for R/W,
24 * not forced to user-mode.
26 writel(0x77777777, &aips1->mprot0);
27 writel(0x77777777, &aips1->mprot1);
28 writel(0x77777777, &aips2->mprot0);
29 writel(0x77777777, &aips2->mprot1);
32 * Set all OPACRx to be non-bufferable, not require
33 * supervisor privilege level for access,allow for
34 * write access and untrusted master access.
36 writel(0x00000000, &aips1->opacr0);
37 writel(0x00000000, &aips1->opacr1);
38 writel(0x00000000, &aips1->opacr2);
39 writel(0x00000000, &aips1->opacr3);
40 writel(0x00000000, &aips1->opacr4);
41 writel(0x00000000, &aips2->opacr0);
42 writel(0x00000000, &aips2->opacr1);
43 writel(0x00000000, &aips2->opacr2);
44 writel(0x00000000, &aips2->opacr3);
45 writel(0x00000000, &aips2->opacr4);
47 if (is_mx6ull() || is_mx6sx() || is_mx7()) {
49 * Set all MPROTx to be non-bufferable, trusted for R/W,
50 * not forced to user-mode.
52 writel(0x77777777, &aips3->mprot0);
53 writel(0x77777777, &aips3->mprot1);
56 * Set all OPACRx to be non-bufferable, not require
57 * supervisor privilege level for access,allow for
58 * write access and untrusted master access.
60 writel(0x00000000, &aips3->opacr0);
61 writel(0x00000000, &aips3->opacr1);
62 writel(0x00000000, &aips3->opacr2);
63 writel(0x00000000, &aips3->opacr3);
64 writel(0x00000000, &aips3->opacr4);
68 void imx_set_wdog_powerdown(bool enable)
70 struct wdog_regs *wdog1 = (struct wdog_regs *)WDOG1_BASE_ADDR;
71 struct wdog_regs *wdog2 = (struct wdog_regs *)WDOG2_BASE_ADDR;
72 struct wdog_regs *wdog3 = (struct wdog_regs *)WDOG3_BASE_ADDR;
74 struct wdog_regs *wdog4 = (struct wdog_regs *)WDOG4_BASE_ADDR;
77 /* Write to the PDE (Power Down Enable) bit */
78 writew(enable, &wdog1->wmcr);
79 writew(enable, &wdog2->wmcr);
81 if (is_mx6sx() || is_mx6ul() || is_mx7())
82 writew(enable, &wdog3->wmcr);
84 writew(enable, &wdog4->wmcr);
88 #define SRC_SCR_WARM_RESET_ENABLE 0
92 struct src *src_regs = (struct src *)SRC_BASE_ADDR;
96 * force warm reset sources to generate cold reset
97 * for a more reliable restart
99 val = readl(&src_regs->scr);
100 val &= ~(1 << SRC_SCR_WARM_RESET_ENABLE);
101 writel(val, &src_regs->scr);
104 #ifdef CONFIG_CMD_BMODE
105 void boot_mode_apply(unsigned cfg_val)
108 struct src *psrc = (struct src *)SRC_BASE_ADDR;
109 writel(cfg_val, &psrc->gpr9);
110 reg = readl(&psrc->gpr10);
115 writel(reg, &psrc->gpr10);
119 #if defined(CONFIG_MX6)
120 u32 imx6_src_get_boot_mode(void)
122 if (imx6_is_bmode_from_gpr9())
123 return readl(&src_base->gpr9);
125 return readl(&src_base->sbmr1);