fdt.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2014-2015 Freescale Semiconductor, Inc.
 * Copyright 2020 NXP
 */

#include <common.h>
#include <clock_legacy.h>
#include <efi_loader.h>
#include <log.h>
#include <asm/cache.h>
#include <linux/libfdt.h>
#include <fdt_support.h>
#include <phy.h>
#ifdef CONFIG_FSL_LSCH3
#include <asm/arch/fdt.h>
#endif
#ifdef CONFIG_FSL_ESDHC
#include <fsl_esdhc.h>
#endif
#ifdef CONFIG_SYS_DPAA_FMAN
#include <fsl_fman.h>
#endif
#ifdef CONFIG_MP
#include <asm/arch/mp.h>
#endif
#include <fsl_sec.h>
#include <asm/arch-fsl-layerscape/soc.h>
#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
#include <asm/armv8/sec_firmware.h>
#endif
#include <asm/arch/speed.h>
#include <fsl_qbman.h>

int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
{
	const char *conn;

	/* Do NOT apply fixup for backplane modes specified in DT */
	if (phyc == PHY_INTERFACE_MODE_XGMII) {
		conn = fdt_getprop(blob, offset, "phy-connection-type", NULL);
		if (is_backplane_mode(conn))
			return 0;
	}
	return fdt_setprop_string(blob, offset, "phy-connection-type",
					 phy_string_for_interface(phyc));
}

#ifdef CONFIG_MP
void ft_fixup_cpu(void *blob)
{
	int off;
	__maybe_unused u64 spin_tbl_addr = (u64)get_spin_tbl_addr();
	fdt32_t *reg;
	int addr_cells;
	u64 val, core_id;
	u32 mask = cpu_pos_mask();
	int off_prev = -1;

	off = fdt_path_offset(blob, "/cpus");
	if (off < 0) {
		puts("couldn't find /cpus node\n");
		return;
	}

	fdt_support_default_count_cells(blob, off, &addr_cells, NULL);

	off = fdt_node_offset_by_prop_value(blob, off_prev, "device_type",
					    "cpu", 4);
	while (off != -FDT_ERR_NOTFOUND) {
		reg = (fdt32_t *)fdt_getprop(blob, off, "reg", 0);
		if (reg) {
			core_id = fdt_read_number(reg, addr_cells);
			if (!test_bit(id_to_core(core_id), &mask)) {
				fdt_del_node(blob, off);
				off = off_prev;
			}
		}
		off_prev = off;
		off = fdt_node_offset_by_prop_value(blob, off_prev,
						    "device_type", "cpu", 4);
	}

#if defined(CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT) && \
	defined(CONFIG_SEC_FIRMWARE_ARMV8_PSCI)
	int node;
	u32 psci_ver;

	/* Check the psci version to determine if the psci is supported */
	psci_ver = sec_firmware_support_psci_version();
	if (psci_ver == 0xffffffff) {
		/* remove psci DT node */
		node = fdt_path_offset(blob, "/psci");
		if (node >= 0)
			goto remove_psci_node;

		node = fdt_node_offset_by_compatible(blob, -1, "arm,psci");
		if (node >= 0)
			goto remove_psci_node;

		node = fdt_node_offset_by_compatible(blob, -1, "arm,psci-0.2");
		if (node >= 0)
			goto remove_psci_node;

		node = fdt_node_offset_by_compatible(blob, -1, "arm,psci-1.0");
		if (node >= 0)
			goto remove_psci_node;

remove_psci_node:
		if (node >= 0)
			fdt_del_node(blob, node);
	} else {
		return;
	}
#endif
	off = fdt_path_offset(blob, "/cpus");
	if (off < 0) {
		puts("couldn't find /cpus node\n");
		return;
	}
	fdt_support_default_count_cells(blob, off, &addr_cells, NULL);

	off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
	while (off != -FDT_ERR_NOTFOUND) {
		reg = (fdt32_t *)fdt_getprop(blob, off, "reg", 0);
		if (reg) {
			core_id = fdt_read_number(reg, addr_cells);
			if (core_id  == 0 || (is_core_online(core_id))) {
				val = spin_tbl_addr;
				val += id_to_core(core_id) *
				       SPIN_TABLE_ELEM_SIZE;
				val = cpu_to_fdt64(val);
				fdt_setprop_string(blob, off, "enable-method",
						   "spin-table");
				fdt_setprop(blob, off, "cpu-release-addr",
					    &val, sizeof(val));
			} else {
				debug("skipping offline core\n");
			}
		} else {
			puts("Warning: found cpu node without reg property\n");
		}
		off = fdt_node_offset_by_prop_value(blob, off, "device_type",
						    "cpu", 4);
	}

	fdt_add_mem_rsv(blob, (uintptr_t)secondary_boot_code_start,
			secondary_boot_code_size);
#if CONFIG_IS_ENABLED(EFI_LOADER)
	efi_add_memory_map((uintptr_t)secondary_boot_code_start,
			   secondary_boot_code_size, EFI_RESERVED_MEMORY_TYPE);
#endif
}
#endif

void fsl_fdt_disable_usb(void *blob)
{
	int off;
	/*
	 * SYSCLK is used as a reference clock for USB. When the USB
	 * controller is used, SYSCLK must meet the additional requirement
	 * of 100 MHz.
	 */
	if (CONFIG_SYS_CLK_FREQ != 100000000) {
		off = fdt_node_offset_by_compatible(blob, -1, "snps,dwc3");
		while (off != -FDT_ERR_NOTFOUND) {
			fdt_status_disabled(blob, off);
			off = fdt_node_offset_by_compatible(blob, off,
							    "snps,dwc3");
		}
	}
}

#ifdef CONFIG_HAS_FEATURE_GIC64K_ALIGN
static void fdt_fixup_gic(void *blob)
{
	int offset, err;
	u64 reg[8];
	struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
	unsigned int val;
	struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
	int align_64k = 0;

	val = gur_in32(&gur->svr);

	if (!IS_SVR_DEV(val, SVR_DEV(SVR_LS1043A))) {
		align_64k = 1;
	} else if (SVR_REV(val) != REV1_0) {
		val = scfg_in32(&scfg->gic_align) & (0x01 << GIC_ADDR_BIT);
		if (!val)
			align_64k = 1;
	}

	offset = fdt_subnode_offset(blob, 0, "interrupt-controller@1400000");
	if (offset < 0) {
		printf("WARNING: fdt_subnode_offset can't find node %s: %s\n",
		       "interrupt-controller@1400000", fdt_strerror(offset));
		return;
	}

	/* Fixup gic node align with 64K */
	if (align_64k) {
		reg[0] = cpu_to_fdt64(GICD_BASE_64K);
		reg[1] = cpu_to_fdt64(GICD_SIZE_64K);
		reg[2] = cpu_to_fdt64(GICC_BASE_64K);
		reg[3] = cpu_to_fdt64(GICC_SIZE_64K);
		reg[4] = cpu_to_fdt64(GICH_BASE_64K);
		reg[5] = cpu_to_fdt64(GICH_SIZE_64K);
		reg[6] = cpu_to_fdt64(GICV_BASE_64K);
		reg[7] = cpu_to_fdt64(GICV_SIZE_64K);
	} else {
	/* Fixup gic node align with default */
		reg[0] = cpu_to_fdt64(GICD_BASE);
		reg[1] = cpu_to_fdt64(GICD_SIZE);
		reg[2] = cpu_to_fdt64(GICC_BASE);
		reg[3] = cpu_to_fdt64(GICC_SIZE);
		reg[4] = cpu_to_fdt64(GICH_BASE);
		reg[5] = cpu_to_fdt64(GICH_SIZE);
		reg[6] = cpu_to_fdt64(GICV_BASE);
		reg[7] = cpu_to_fdt64(GICV_SIZE);
	}

	err = fdt_setprop(blob, offset, "reg", reg, sizeof(reg));
	if (err < 0) {
		printf("WARNING: fdt_setprop can't set %s from node %s: %s\n",
		       "reg", "interrupt-controller@1400000",
		       fdt_strerror(err));
		return;
	}

	return;
}
#endif

#ifdef CONFIG_HAS_FEATURE_ENHANCED_MSI
static int _fdt_fixup_msi_node(void *blob, const char *name,
				  int irq_0, int irq_1, int rev)
{
	int err, offset, len;
	u32 tmp[4][3];
	void *p;

	offset = fdt_path_offset(blob, name);
	if (offset < 0) {
		printf("WARNING: fdt_path_offset can't find path %s: %s\n",
		       name, fdt_strerror(offset));
		return 0;
	}

	/*fixup the property of interrupts*/

	tmp[0][0] = cpu_to_fdt32(0x0);
	tmp[0][1] = cpu_to_fdt32(irq_0);
	tmp[0][2] = cpu_to_fdt32(0x4);

	if (rev > REV1_0) {
		tmp[1][0] = cpu_to_fdt32(0x0);
		tmp[1][1] = cpu_to_fdt32(irq_1);
		tmp[1][2] = cpu_to_fdt32(0x4);
		tmp[2][0] = cpu_to_fdt32(0x0);
		tmp[2][1] = cpu_to_fdt32(irq_1 + 1);
		tmp[2][2] = cpu_to_fdt32(0x4);
		tmp[3][0] = cpu_to_fdt32(0x0);
		tmp[3][1] = cpu_to_fdt32(irq_1 + 2);
		tmp[3][2] = cpu_to_fdt32(0x4);
		len = sizeof(tmp);
	} else {
		len = sizeof(tmp[0]);
	}

	err = fdt_setprop(blob, offset, "interrupts", tmp, len);
	if (err < 0) {
		printf("WARNING: fdt_setprop can't set %s from node %s: %s\n",
		       "interrupts", name, fdt_strerror(err));
		return 0;
	}

	/*fixup the property of reg*/
	p = (char *)fdt_getprop(blob, offset, "reg", &len);
	if (!p) {
		printf("WARNING: fdt_getprop can't get %s from node %s\n",
		       "reg", name);
		return 0;
	}

	memcpy((char *)tmp, p, len);

	if (rev > REV1_0)
		*((u32 *)tmp + 3) = cpu_to_fdt32(0x1000);
	else
		*((u32 *)tmp + 3) = cpu_to_fdt32(0x8);

	err = fdt_setprop(blob, offset, "reg", tmp, len);
	if (err < 0) {
		printf("WARNING: fdt_setprop can't set %s from node %s: %s\n",
		       "reg", name, fdt_strerror(err));
		return 0;
	}

	/*fixup the property of compatible*/
	if (rev > REV1_0)
		err = fdt_setprop_string(blob, offset, "compatible",
					 "fsl,ls1043a-v1.1-msi");
	else
		err = fdt_setprop_string(blob, offset, "compatible",
					 "fsl,ls1043a-msi");
	if (err < 0) {
		printf("WARNING: fdt_setprop can't set %s from node %s: %s\n",
		       "compatible", name, fdt_strerror(err));
		return 0;
	}

	return 1;
}

static int _fdt_fixup_pci_msi(void *blob, const char *name, int rev)
{
	int offset, len, err;
	void *p;
	int val;
	u32 tmp[4][8];

	offset = fdt_path_offset(blob, name);
	if (offset < 0) {
		printf("WARNING: fdt_path_offset can't find path %s: %s\n",
		       name, fdt_strerror(offset));
		return 0;
	}

	p = (char *)fdt_getprop(blob, offset, "interrupt-map", &len);
	if (!p || len != sizeof(tmp)) {
		printf("WARNING: fdt_getprop can't get %s from node %s\n",
		       "interrupt-map", name);
		return 0;
	}

	memcpy((char *)tmp, p, len);

	val = fdt32_to_cpu(tmp[0][6]);
	if (rev == REV1_0) {
		tmp[1][6] = cpu_to_fdt32(val + 1);
		tmp[2][6] = cpu_to_fdt32(val + 2);
		tmp[3][6] = cpu_to_fdt32(val + 3);
	} else {
		tmp[1][6] = cpu_to_fdt32(val);
		tmp[2][6] = cpu_to_fdt32(val);
		tmp[3][6] = cpu_to_fdt32(val);
	}

	err = fdt_setprop(blob, offset, "interrupt-map", tmp, sizeof(tmp));
	if (err < 0) {
		printf("WARNING: fdt_setprop can't set %s from node %s: %s.\n",
		       "interrupt-map", name, fdt_strerror(err));
		return 0;
	}
	return 1;
}

/* Fixup msi node for ls1043a rev1.1*/

static void fdt_fixup_msi(void *blob)
{
	struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
	unsigned int rev;

	rev = gur_in32(&gur->svr);

	if (!IS_SVR_DEV(rev, SVR_DEV(SVR_LS1043A)))
		return;

	rev = SVR_REV(rev);

	_fdt_fixup_msi_node(blob, "/soc/msi-controller1@1571000",
			    116, 111, rev);
	_fdt_fixup_msi_node(blob, "/soc/msi-controller2@1572000",
			    126, 121, rev);
	_fdt_fixup_msi_node(blob, "/soc/msi-controller3@1573000",
			    160, 155, rev);

	_fdt_fixup_pci_msi(blob, "/soc/pcie@3400000", rev);
	_fdt_fixup_pci_msi(blob, "/soc/pcie@3500000", rev);
	_fdt_fixup_pci_msi(blob, "/soc/pcie@3600000", rev);
}
#endif

#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
/* Remove JR node used by SEC firmware */
void fdt_fixup_remove_jr(void *blob)
{
	int jr_node, addr_cells, len;
	int crypto_node = fdt_path_offset(blob, "crypto");
	u64 jr_offset, used_jr;
	fdt32_t *reg;

	used_jr = sec_firmware_used_jobring_offset();
	fdt_support_default_count_cells(blob, crypto_node, &addr_cells, NULL);

	jr_node = fdt_node_offset_by_compatible(blob, crypto_node,
						"fsl,sec-v4.0-job-ring");

	while (jr_node != -FDT_ERR_NOTFOUND) {
		reg = (fdt32_t *)fdt_getprop(blob, jr_node, "reg", &len);
		if (reg) {
			jr_offset = fdt_read_number(reg, addr_cells);
			if (jr_offset == used_jr) {
				fdt_del_node(blob, jr_node);
				break;
			}
		}
		jr_node = fdt_node_offset_by_compatible(blob, jr_node,
							"fsl,sec-v4.0-job-ring");
	}
}
#endif

#ifdef CONFIG_ARCH_LS1028A
static void fdt_disable_multimedia(void *blob, unsigned int svr)
{
	int off;

	if (IS_MULTIMEDIA_EN(svr))
		return;

	/* Disable eDP/LCD node */
	off = fdt_node_offset_by_compatible(blob, -1, "arm,mali-dp500");
	if (off != -FDT_ERR_NOTFOUND)
		fdt_status_disabled(blob, off);

	/* Disable GPU node */
	off = fdt_node_offset_by_compatible(blob, -1, "fsl,ls1028a-gpu");
	if (off != -FDT_ERR_NOTFOUND)
		fdt_status_disabled(blob, off);
}
#endif

#ifdef CONFIG_PCIE_ECAM_GENERIC
__weak void fdt_fixup_ecam(void *blob)
{
}
#endif

/*
 * If it is a non-E part the crypto is disabled on the following SoCs:
 *  - LS1043A
 *  - LS1088A
 *  - LS2080A
 *  - LS2088A
 * and their personalities.
 *
 * On all other SoCs just the export-controlled ciphers are disabled, that
 * means that the following is still working:
 *  - hashing (using MDHA - message digest hash accelerator)
 *  - random number generation (using RNG4)
 *  - cyclic redundancy checking (using CRCA)
 *  - runtime integrity checker (RTIC)
 *
 * The linux driver will figure out what is available and what is not.
 * Therefore, we just remove the crypto node on the SoCs which have no crypto
 * support at all.
 */
static bool crypto_is_disabled(unsigned int svr)
{
	if (IS_E_PROCESSOR(svr))
		return false;

	if (IS_SVR_DEV(svr, SVR_DEV(SVR_LS1043A)))
		return true;

	if (IS_SVR_DEV(svr, SVR_DEV(SVR_LS1088A)))
		return true;

	if (IS_SVR_DEV(svr, SVR_DEV(SVR_LS2080A)))
		return true;

	if (IS_SVR_DEV(svr, SVR_DEV(SVR_LS2088A)))
		return true;

	return false;
}

void ft_cpu_setup(void *blob, struct bd_info *bd)
{
	struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
	unsigned int svr = gur_in32(&gur->svr);

	/* delete crypto node if not on an E-processor */
	if (crypto_is_disabled(svr))
		fdt_fixup_crypto_node(blob, 0);
#if CONFIG_SYS_FSL_SEC_COMPAT >= 4
	else {
		ccsr_sec_t __iomem *sec;

#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
		fdt_fixup_remove_jr(blob);
		fdt_fixup_kaslr(blob);
#endif

		sec = (void __iomem *)CONFIG_SYS_FSL_SEC_ADDR;
		fdt_fixup_crypto_node(blob, sec_in32(&sec->secvid_ms));
	}
#endif

#ifdef CONFIG_MP
	ft_fixup_cpu(blob);
#endif

#ifdef CONFIG_SYS_NS16550
	do_fixup_by_compat_u32(blob, "fsl,ns16550",
			       "clock-frequency", CONFIG_SYS_NS16550_CLK, 1);
#endif

	do_fixup_by_path_u32(blob, "/sysclk", "clock-frequency",
			     CONFIG_SYS_CLK_FREQ, 1);

#ifdef CONFIG_GIC_V3_ITS
	ls_gic_rd_tables_init(blob);
#endif

#if defined(CONFIG_PCIE_LAYERSCAPE) || defined(CONFIG_PCIE_LAYERSCAPE_GEN4)
	ft_pci_setup(blob, bd);
#endif

#ifdef CONFIG_FSL_ESDHC
	fdt_fixup_esdhc(blob, bd);
#endif

#ifdef CONFIG_SYS_DPAA_QBMAN
	fdt_fixup_bportals(blob);
	fdt_fixup_qportals(blob);
	do_fixup_by_compat_u32(blob, "fsl,qman",
			       "clock-frequency", get_qman_freq(), 1);
#endif

#ifdef CONFIG_SYS_DPAA_FMAN
	fdt_fixup_fman_firmware(blob);
#endif
#ifndef CONFIG_ARCH_LS1012A
	fsl_fdt_disable_usb(blob);
#endif
#ifdef CONFIG_HAS_FEATURE_GIC64K_ALIGN
	fdt_fixup_gic(blob);
#endif
#ifdef CONFIG_HAS_FEATURE_ENHANCED_MSI
	fdt_fixup_msi(blob);
#endif
#ifdef CONFIG_ARCH_LS1028A
	fdt_disable_multimedia(blob, svr);
#endif
#ifdef CONFIG_PCIE_ECAM_GENERIC
	fdt_fixup_ecam(blob);
#endif
}