imx: add module fuse support

There are different parts from one SoC. Take i.MX6ULL for example,
some part might not have ENET, some might have; some might not have
USB, some might have. The information could be got from OCOTP,
to make one image support the different parts, we need runtime
disable linux kernel dts node and uboot driver probe if the
corresponding module not exists in the part.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

1 files changed, 322 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/mx6/module_fuse.c b/arch/arm/mach-imx/mx6/module_fuse.c
new file mode 100644
index 0000000000..3e94416065
--- /dev/null
+++ b/arch/arm/mach-imx/mx6/module_fuse.c
@@ -0,0 +1,322 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 NXP
+ */
+
+#include <common.h>
+#include <fdt_support.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/mach-imx/module_fuse.h>
+#include <linux/errno.h>
+
+static struct fuse_entry_desc mx6_fuse_descs[] = {
+#if defined(CONFIG_MX6ULL)
+	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430, 22},
+	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430, 23},
+	{MODULE_EPDC, "/soc/aips-bus@2200000/epdc@228c000", 0x430, 24},
+	{MODULE_ESAI, "/soc/aips-bus@2000000/spba-bus@2000000/esai@2024000", 0x430, 25},
+	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000", 0x430, 26},
+	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000", 0x430, 27},
+	{MODULE_SPDIF, "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
+	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000", 0x440, 3},
+	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000", 0x440, 4},
+	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000", 0x440, 5},
+	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000", 0x440, 6},
+	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
+	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
+	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000", 0x440, 8},
+	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440, 9},
+	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440, 10},
+	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440, 11},
+	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000", 0x440, 12},
+	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000", 0x440, 13},
+	{MODULE_DCP, "/soc/aips-bus@2200000/dcp@2280000", 0x440, 14},
+	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200", 0x440, 15},
+	{MODULE_SAI2, "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
+	{MODULE_SAI3, "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
+	{MODULE_DCP_CRYPTO, "/soc/aips-bus@2200000/dcp@2280000", 0x440, 25},
+	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000", 0x440, 26},
+	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000", 0x440, 26},
+	{MODULE_UART7, "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440, 26},
+	{MODULE_UART8, "/soc/aips-bus@2200000/serial@2288000", 0x440, 26},
+	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440, 27},
+	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440, 27},
+	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440, 27},
+	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440, 27},
+	{MODULE_ECSPI3, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440, 28},
+	{MODULE_ECSPI4, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440, 28},
+	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440, 29},
+	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440, 29},
+	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440, 30},
+	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000", 0x440, 31},
+	/* Paths for older imx tree: */
+	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000", 0x430, 22},
+	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000", 0x430, 23},
+	{MODULE_EPDC, "/soc/aips-bus@02200000/epdc@0228c000", 0x430, 24},
+	{MODULE_ESAI, "/soc/aips-bus@02000000/spba-bus@02000000/esai@02024000", 0x430, 25},
+	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000", 0x430, 26},
+	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000", 0x430, 27},
+	{MODULE_SPDIF, "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000", 0x440, 2},
+	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000", 0x440, 3},
+	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000", 0x440, 4},
+	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000", 0x440, 5},
+	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000", 0x440, 6},
+	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
+	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
+	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000", 0x440, 8},
+	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000", 0x440, 9},
+	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000", 0x440, 10},
+	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000", 0x440, 11},
+	{MODULE_ENET1, "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
+	{MODULE_ENET2, "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
+	{MODULE_DCP, "/soc/aips-bus@02200000/dcp@02280000", 0x440, 14},
+	{MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200", 0x440, 15},
+	{MODULE_SAI2, "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440, 24},
+	{MODULE_SAI3, "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440, 24},
+	{MODULE_DCP_CRYPTO, "/soc/aips-bus@02200000/dcp@02280000", 0x440, 25},
+	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000", 0x440, 26},
+	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000", 0x440, 26},
+	{MODULE_UART7, "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000", 0x440, 26},
+	{MODULE_UART8, "/soc/aips-bus@02200000/serial@02288000", 0x440, 26},
+	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000", 0x440, 27},
+	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000", 0x440, 27},
+	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000", 0x440, 27},
+	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000", 0x440, 27},
+	{MODULE_ECSPI3, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000", 0x440, 28},
+	{MODULE_ECSPI4, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000", 0x440, 28},
+	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000", 0x440, 29},
+	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000", 0x440, 29},
+	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000", 0x440, 30},
+	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000", 0x440, 31},
+#elif defined(CONFIG_MX6UL)
+	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430, 22},
+	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430, 23},
+	{MODULE_SIM1, "/soc/aips-bus@2100000/sim@218c000", 0x430, 24},
+	{MODULE_SIM2, "/soc/aips-bus@2100000/sim@21b4000", 0x430, 25},
+	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000", 0x430, 26},
+	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000", 0x430, 27},
+	{MODULE_SPDIF, "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
+	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000", 0x440, 3},
+	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000", 0x440, 4},
+	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000", 0x440, 5},
+	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000", 0x440, 6},
+	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
+	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
+	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000", 0x440, 8},
+	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440, 9},
+	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440, 10},
+	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440, 11},
+	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000", 0x440, 12},
+	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000", 0x440, 13},
+	{MODULE_CAAM, "/soc/aips-bus@2100000/caam@2140000", 0x440, 14},
+	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200", 0x440, 15},
+	{MODULE_SAI2, "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
+	{MODULE_SAI3, "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
+	{MODULE_BEE, "/soc/aips-bus@2000000/bee@2044000", 0x440, 25},
+	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000", 0x440, 26},
+	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000", 0x440, 26},
+	{MODULE_UART7, "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440, 26},
+	{MODULE_UART8, "/soc/aips-bus@2000000/spba-bus@2000000/serial@2024000", 0x440, 26},
+	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440, 27},
+	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440, 27},
+	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440, 27},
+	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440, 27},
+	{MODULE_ECSPI3, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440, 28},
+	{MODULE_ECSPI4, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440, 28},
+	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440, 29},
+	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440, 29},
+	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440, 30},
+	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000", 0x440, 31},
+	/* Paths for older imx tree: */
+	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000", 0x430, 22},
+	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000", 0x430, 23},
+	{MODULE_SIM1, "/soc/aips-bus@02100000/sim@0218c000", 0x430, 24},
+	{MODULE_SIM2, "/soc/aips-bus@02100000/sim@021b4000", 0x430, 25},
+	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000", 0x430, 26},
+	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000", 0x430, 27},
+	{MODULE_SPDIF, "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000", 0x440, 2},
+	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000", 0x440, 3},
+	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000", 0x440, 4},
+	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000", 0x440, 5},
+	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000", 0x440, 6},
+	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
+	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
+	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000", 0x440, 8},
+	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000", 0x440, 9},
+	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000", 0x440, 10},
+	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000", 0x440, 11},
+	{MODULE_ENET1, "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
+	{MODULE_ENET2, "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
+	{MODULE_CAAM, "/soc/aips-bus@02100000/caam@2140000", 0x440, 14},
+	{MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200", 0x440, 15},
+	{MODULE_SAI2, "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440, 24},
+	{MODULE_SAI3, "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440, 24},
+	{MODULE_BEE, "/soc/aips-bus@02000000/bee@02044000", 0x440, 25},
+	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000", 0x440, 26},
+	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000", 0x440, 26},
+	{MODULE_UART7, "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000", 0x440, 26},
+	{MODULE_UART8, "/soc/aips-bus@02000000/spba-bus@02000000/serial@02024000", 0x440, 26},
+	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000", 0x440, 27},
+	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000", 0x440, 27},
+	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000", 0x440, 27},
+	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000", 0x440, 27},
+	{MODULE_ECSPI3, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000", 0x440, 28},
+	{MODULE_ECSPI4, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000", 0x440, 28},
+	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000", 0x440, 29},
+	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000", 0x440, 29},
+	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000", 0x440, 30},
+	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000", 0x440, 31},
+#endif
+};
+
+u32 check_module_fused(enum fuse_module_type module)
+{
+	u32 i, reg;
+
+	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
+		if (mx6_fuse_descs[i].module == module) {
+			reg = readl(OCOTP_BASE_ADDR +
+				    mx6_fuse_descs[i].fuse_word_offset);
+			if (reg & BIT(mx6_fuse_descs[i].fuse_bit_offset))
+				return 1; /* disabled */
+			else
+				return 0; /* enabled */
+		}
+	}
+
+	return  0; /* Not has a fuse, always enabled */
+}
+
+#ifdef CONFIG_OF_SYSTEM_SETUP
+int ft_system_setup(void *blob, bd_t *bd)
+{
+	const char *status = "disabled";
+	u32 i, reg;
+	int rc, off;
+
+	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
+		reg = readl(OCOTP_BASE_ADDR +
+			    mx6_fuse_descs[i].fuse_word_offset);
+		if (reg & BIT(mx6_fuse_descs[i].fuse_bit_offset)) {
+			off = fdt_path_offset(blob,
+					      mx6_fuse_descs[i].node_path);
+
+			if (off < 0)
+				continue; /* Not found, skip it */
+add_status:
+			rc = fdt_setprop(blob, nodeoff, "status", status,
+					 strlen(status) + 1);
+			if (rc) {
+				if (rc == -FDT_ERR_NOSPACE) {
+					rc = fdt_increase_size(blob, 512);
+					if (!rc)
+						goto add_status;
+				}
+				printf("Unable to update property %s:%s, err=%s\n", mx6_fuse_descs[i].node_path, "status", fdt_strerror(rc));
+			} else {
+				printf("Modify %s disabled\n", mx6_fuse_descs[i].node_path);
+			}
+		}
+	}
+
+	return 0;
+}
+#endif
+
+u32 esdhc_fused(ulong base_addr)
+{
+	switch (base_addr) {
+	case USDHC1_BASE_ADDR:
+		return check_module_fused(MODULE_SD1);
+	case USDHC2_BASE_ADDR:
+		return check_module_fused(MODULE_SD2);
+#ifdef USDHC3_BASE_ADDR
+	case USDHC3_BASE_ADDR:
+		return check_module_fused(MODULE_SD3);
+#endif
+#ifdef USDHC4_BASE_ADDR
+	case USDHC4_BASE_ADDR:
+		return check_module_fused(MODULE_SD4);
+#endif
+	default:
+		return 0;
+	}
+}
+
+u32 ecspi_fused(ulong base_addr)
+{
+	switch (base_addr) {
+	case ECSPI1_BASE_ADDR:
+		return check_module_fused(MODULE_ECSPI1);
+	case ECSPI2_BASE_ADDR:
+		return check_module_fused(MODULE_ECSPI2);
+	case ECSPI3_BASE_ADDR:
+		return check_module_fused(MODULE_ECSPI3);
+	case ECSPI4_BASE_ADDR:
+		return check_module_fused(MODULE_ECSPI4);
+#ifdef ECSPI5_BASE_ADDR
+	case ECSPI5_BASE_ADDR:
+		return check_module_fused(MODULE_ECSPI5);
+#endif
+	default:
+		return 0;
+	}
+}
+
+u32 usb_fused(ulong base_addr)
+{
+	int i = (base_addr - USB_BASE_ADDR) / 0x200;
+
+	return check_module_fused(MODULE_USB_OTG1 + i);
+}
+
+u32 qspi_fused(ulong base_addr)
+{
+	switch (base_addr) {
+#ifdef QSPI1_BASE_ADDR
+	case QSPI1_BASE_ADDR:
+		return check_module_fused(MODULE_QSPI1);
+#endif
+
+#ifdef QSPI2_BASE_ADDR
+	case QSPI2_BASE_ADDR:
+		return check_module_fused(MODULE_QSPI2);
+#endif
+	default:
+		return 0;
+	}
+}
+
+u32 i2c_fused(ulong base_addr)
+{
+	switch (base_addr) {
+	case I2C1_BASE_ADDR:
+		return check_module_fused(MODULE_I2C1);
+	case I2C2_BASE_ADDR:
+		return check_module_fused(MODULE_I2C2);
+	case I2C3_BASE_ADDR:
+		return check_module_fused(MODULE_I2C3);
+#ifdef I2C4_BASE_ADDR
+	case I2C4_BASE_ADDR:
+		return check_module_fused(MODULE_I2C4);
+#endif
+	}
+
+	return 0;
+}
+
+u32 enet_fused(ulong base_addr)
+{
+	switch (base_addr) {
+	case ENET_BASE_ADDR:
+		return check_module_fused(MODULE_ENET1);
+#ifdef ENET2_BASE_ADDR
+	case ENET2_BASE_ADDR:
+		return check_module_fused(MODULE_ENET2);
+#endif
+	default:
+		return 0;
+	}
+}