1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015 Freescale Semiconductor, Inc.
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/dma.h>
12 #include <asm/mach-imx/hab.h>
13 #include <asm/mach-imx/rdc-sema.h>
14 #include <asm/arch/imx-rdc.h>
15 #include <asm/arch/crm_regs.h>
17 #include <imx_thermal.h>
19 #include <asm/setup.h>
21 #if defined(CONFIG_IMX_THERMAL)
22 static const struct imx_thermal_plat imx7_thermal_plat = {
23 .regs = (void *)ANATOP_BASE_ADDR,
28 U_BOOT_DEVICE(imx7_thermal) = {
29 .name = "imx_thermal",
30 .platdata = &imx7_thermal_plat,
34 #if CONFIG_IS_ENABLED(IMX_RDC)
36 * In current design, if any peripheral was assigned to both A7 and M4,
37 * it will receive ipg_stop or ipg_wait when any of the 2 platforms enter
38 * low power mode. So M4 sleep will cause some peripherals fail to work
39 * at A7 core side. At default, all resources are in domain 0 - 3.
41 * There are 26 peripherals impacted by this IC issue:
44 * UART1/UART2/UART3/UART4/UART5/UART6/UART7
46 * WDOG1/WDOG2/WDOG3/WDOG4
50 * Software Workaround:
51 * Here we setup some resources to domain 0 where M4 codes will move
52 * the M4 out of this domain. Then M4 is not able to access them any longer.
53 * This is a workaround for ic issue. So the peripherals are not shared
54 * by them. This way requires the uboot implemented the RDC driver and
55 * set the 26 IPs above to domain 0 only. M4 code will assign resource
56 * to its own domain, if it want to use the resource.
58 static rdc_peri_cfg_t const resources[] = {
59 (RDC_PER_SIM1 | RDC_DOMAIN(0)),
60 (RDC_PER_SIM2 | RDC_DOMAIN(0)),
61 (RDC_PER_UART1 | RDC_DOMAIN(0)),
62 (RDC_PER_UART2 | RDC_DOMAIN(0)),
63 (RDC_PER_UART3 | RDC_DOMAIN(0)),
64 (RDC_PER_UART4 | RDC_DOMAIN(0)),
65 (RDC_PER_UART5 | RDC_DOMAIN(0)),
66 (RDC_PER_UART6 | RDC_DOMAIN(0)),
67 (RDC_PER_UART7 | RDC_DOMAIN(0)),
68 (RDC_PER_SAI1 | RDC_DOMAIN(0)),
69 (RDC_PER_SAI2 | RDC_DOMAIN(0)),
70 (RDC_PER_SAI3 | RDC_DOMAIN(0)),
71 (RDC_PER_WDOG1 | RDC_DOMAIN(0)),
72 (RDC_PER_WDOG2 | RDC_DOMAIN(0)),
73 (RDC_PER_WDOG3 | RDC_DOMAIN(0)),
74 (RDC_PER_WDOG4 | RDC_DOMAIN(0)),
75 (RDC_PER_GPT1 | RDC_DOMAIN(0)),
76 (RDC_PER_GPT2 | RDC_DOMAIN(0)),
77 (RDC_PER_GPT3 | RDC_DOMAIN(0)),
78 (RDC_PER_GPT4 | RDC_DOMAIN(0)),
79 (RDC_PER_PWM1 | RDC_DOMAIN(0)),
80 (RDC_PER_PWM2 | RDC_DOMAIN(0)),
81 (RDC_PER_PWM3 | RDC_DOMAIN(0)),
82 (RDC_PER_PWM4 | RDC_DOMAIN(0)),
83 (RDC_PER_ENET1 | RDC_DOMAIN(0)),
84 (RDC_PER_ENET2 | RDC_DOMAIN(0)),
87 static void isolate_resource(void)
89 imx_rdc_setup_peripherals(resources, ARRAY_SIZE(resources));
93 #if defined(CONFIG_SECURE_BOOT)
94 struct imx_sec_config_fuse_t const imx_sec_config_fuse = {
100 static bool is_mx7d(void)
102 struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
103 struct fuse_bank *bank = &ocotp->bank[1];
104 struct fuse_bank1_regs *fuse =
105 (struct fuse_bank1_regs *)bank->fuse_regs;
108 val = readl(&fuse->tester4);
115 u32 get_cpu_rev(void)
117 struct mxc_ccm_anatop_reg *ccm_anatop = (struct mxc_ccm_anatop_reg *)
119 u32 reg = readl(&ccm_anatop->digprog);
120 u32 type = (reg >> 16) & 0xff;
126 return (type << 12) | reg;
129 #ifdef CONFIG_REVISION_TAG
130 u32 __weak get_board_rev(void)
132 return get_cpu_rev();
136 /* enable all periherial can be accessed in nosec mode */
137 static void init_csu(void)
140 for (i = 0; i < CSU_NUM_REGS; i++)
141 writel(CSU_INIT_SEC_LEVEL0, CSU_IPS_BASE_ADDR + i * 4);
144 static void imx_enet_mdio_fixup(void)
146 struct iomuxc_gpr_base_regs *gpr_regs =
147 (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
150 * The management data input/output (MDIO) requires open-drain,
151 * i.MX7D TO1.0 ENET MDIO pin has no open drain, but TO1.1 supports
152 * this feature. So to TO1.1, need to enable open drain by setting
156 if (soc_rev() >= CHIP_REV_1_1) {
157 setbits_le32(&gpr_regs->gpr[0],
158 IOMUXC_GPR_GPR0_ENET_MDIO_OPEN_DRAIN_MASK);
162 int arch_cpu_init(void)
167 /* Disable PDE bit of WMCR register */
168 imx_wdog_disable_powerdown();
170 imx_enet_mdio_fixup();
172 #ifdef CONFIG_APBH_DMA
177 #if CONFIG_IS_ENABLED(IMX_RDC)
186 #ifdef CONFIG_ARCH_MISC_INIT
187 int arch_misc_init(void)
189 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
191 env_set("soc", "imx7d");
193 env_set("soc", "imx7s");
196 #ifdef CONFIG_FSL_CAAM
204 #ifdef CONFIG_SERIAL_TAG
207 * i.MX 7Solo Applications Processor Reference Manual, Rev. 0.1, 08/2016
208 * OCOTP_TESTER describes a unique ID based on silicon wafer
209 * and die X/Y position
211 * OCOTOP_TESTER offset 0x410
213 * FSL-wide unique, encoded LOT ID STD II/SJC CHALLENGE/ Unique ID
215 * OCOTP_TESTER1 offset 0x420
217 * The X-coordinate of the die location on the wafer/SJC CHALLENGE/ Unique ID
219 * The Y-coordinate of the die location on the wafer/SJC CHALLENGE/ Unique ID
221 * The wafer number of the wafer on which the device was fabricated/SJC
222 * CHALLENGE/ Unique ID
224 * FSL-wide unique, encoded LOT ID STD II/SJC CHALLENGE/ Unique ID
226 void get_board_serial(struct tag_serialnr *serialnr)
228 struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
229 struct fuse_bank *bank = &ocotp->bank[0];
230 struct fuse_bank0_regs *fuse =
231 (struct fuse_bank0_regs *)bank->fuse_regs;
233 serialnr->low = fuse->tester0;
234 serialnr->high = fuse->tester1;
238 void set_wdog_reset(struct wdog_regs *wdog)
240 u32 reg = readw(&wdog->wcr);
242 * Output WDOG_B signal to reset external pmic or POR_B decided by
243 * the board desgin. Without external reset, the peripherals/DDR/
244 * PMIC are not reset, that may cause system working abnormal.
246 reg = readw(&wdog->wcr);
249 * WDZST bit is write-once only bit. Align this bit in kernel,
250 * otherwise kernel code will have no chance to set this bit.
253 writew(reg, &wdog->wcr);
258 /* clock configuration. */
264 void reset_misc(void)
266 #ifdef CONFIG_VIDEO_MXS