From: Emanuele Ghidoli emanuele.ghidoli@toradex.com
ft_system_setup cannot be enabled on SoC without msmc sram otherwise fdt_fixup_msmc_ram function fails causing system reset.
Fix by moving fdt_fixup_msmc_ram to common_fdt.c file and creating SoC (AM654, J721E and J721S2) specific files for fdt fixups.
This change was verified to not change anything on any existing board (all the J721S2, AM654 and J721E boards requires it, none of the remaining k3 boards require it).
Fixes: 30e96a240156 ("arm: mach-k3: Move MSMC fixup to SoC level") Signed-off-by: Emanuele Ghidoli emanuele.ghidoli@toradex.com Signed-off-by: Francesco Dolcini francesco.dolcini@toradex.com --- v2: - Moved fdt common functions to to common_fdt.c and ft_system_setup function to specific SoC files (eg. am654_fdt.c) and compile them using relevant configuration --- arch/arm/mach-k3/Makefile | 6 +++ arch/arm/mach-k3/am654_fdt.c | 12 +++++ arch/arm/mach-k3/common.c | 91 --------------------------------- arch/arm/mach-k3/common_fdt.c | 95 +++++++++++++++++++++++++++++++++++ arch/arm/mach-k3/common_fdt.h | 11 ++++ arch/arm/mach-k3/j721e_fdt.c | 12 +++++ arch/arm/mach-k3/j721s2_fdt.c | 12 +++++ 7 files changed, 148 insertions(+), 91 deletions(-) create mode 100644 arch/arm/mach-k3/am654_fdt.c create mode 100644 arch/arm/mach-k3/common_fdt.c create mode 100644 arch/arm/mach-k3/common_fdt.h create mode 100644 arch/arm/mach-k3/j721e_fdt.c create mode 100644 arch/arm/mach-k3/j721s2_fdt.c
diff --git a/arch/arm/mach-k3/Makefile b/arch/arm/mach-k3/Makefile index b5bc2367813c..499bdaa7153d 100644 --- a/arch/arm/mach-k3/Makefile +++ b/arch/arm/mach-k3/Makefile @@ -10,6 +10,12 @@ obj-$(CONFIG_SOC_K3_AM62A7) += am62ax/ obj-$(CONFIG_ARM64) += arm64-mmu.o obj-$(CONFIG_CPU_V7R) += r5_mpu.o lowlevel_init.o obj-$(CONFIG_ARM64) += cache.o +obj-$(CONFIG_OF_LIBFDT) += common_fdt.o +ifeq ($(CONFIG_OF_LIBFDT)$(CONFIG_OF_SYSTEM_SETUP),yy) +obj-$(CONFIG_SOC_K3_AM654) += am654_fdt.o +obj-$(CONFIG_SOC_K3_J721E) += j721e_fdt.o +obj-$(CONFIG_SOC_K3_J721S2) += j721s2_fdt.o +endif ifeq ($(CONFIG_SPL_BUILD),y) obj-$(CONFIG_SOC_K3_AM654) += am654_init.o obj-$(CONFIG_SOC_K3_J721E) += j721e_init.o diff --git a/arch/arm/mach-k3/am654_fdt.c b/arch/arm/mach-k3/am654_fdt.c new file mode 100644 index 000000000000..652fe8d32bbb --- /dev/null +++ b/arch/arm/mach-k3/am654_fdt.c @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2023 Toradex - https://www.toradex.com/ + */ + +#include "common_fdt.h" +#include <fdt_support.h> + +int ft_system_setup(void *blob, struct bd_info *bd) +{ + return fdt_fixup_msmc_ram_k3(blob); +} diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c index 34737a43aa08..93c0e49e49b7 100644 --- a/arch/arm/mach-k3/common.c +++ b/arch/arm/mach-k3/common.c @@ -357,97 +357,6 @@ void board_fit_image_post_process(const void *fit, int node, void **p_image, } #endif
-#if defined(CONFIG_OF_LIBFDT) -int fdt_fixup_msmc_ram(void *blob, char *parent_path, char *node_name) -{ - u64 msmc_start = 0, msmc_end = 0, msmc_size, reg[2]; - struct ti_sci_handle *ti_sci = get_ti_sci_handle(); - int ret, node, subnode, len, prev_node; - u32 range[4], addr, size; - const fdt32_t *sub_reg; - - ti_sci->ops.core_ops.query_msmc(ti_sci, &msmc_start, &msmc_end); - msmc_size = msmc_end - msmc_start + 1; - debug("%s: msmc_start = 0x%llx, msmc_size = 0x%llx\n", __func__, - msmc_start, msmc_size); - - /* find or create "msmc_sram node */ - ret = fdt_path_offset(blob, parent_path); - if (ret < 0) - return ret; - - node = fdt_find_or_add_subnode(blob, ret, node_name); - if (node < 0) - return node; - - ret = fdt_setprop_string(blob, node, "compatible", "mmio-sram"); - if (ret < 0) - return ret; - - reg[0] = cpu_to_fdt64(msmc_start); - reg[1] = cpu_to_fdt64(msmc_size); - ret = fdt_setprop(blob, node, "reg", reg, sizeof(reg)); - if (ret < 0) - return ret; - - fdt_setprop_cell(blob, node, "#address-cells", 1); - fdt_setprop_cell(blob, node, "#size-cells", 1); - - range[0] = 0; - range[1] = cpu_to_fdt32(msmc_start >> 32); - range[2] = cpu_to_fdt32(msmc_start & 0xffffffff); - range[3] = cpu_to_fdt32(msmc_size); - ret = fdt_setprop(blob, node, "ranges", range, sizeof(range)); - if (ret < 0) - return ret; - - subnode = fdt_first_subnode(blob, node); - prev_node = 0; - - /* Look for invalid subnodes and delete them */ - while (subnode >= 0) { - sub_reg = fdt_getprop(blob, subnode, "reg", &len); - addr = fdt_read_number(sub_reg, 1); - sub_reg++; - size = fdt_read_number(sub_reg, 1); - debug("%s: subnode = %d, addr = 0x%x. size = 0x%x\n", __func__, - subnode, addr, size); - if (addr + size > msmc_size || - !strncmp(fdt_get_name(blob, subnode, &len), "sysfw", 5) || - !strncmp(fdt_get_name(blob, subnode, &len), "l3cache", 7)) { - fdt_del_node(blob, subnode); - debug("%s: deleting subnode %d\n", __func__, subnode); - if (!prev_node) - subnode = fdt_first_subnode(blob, node); - else - subnode = fdt_next_subnode(blob, prev_node); - } else { - prev_node = subnode; - subnode = fdt_next_subnode(blob, prev_node); - } - } - - return 0; -} - -#if defined(CONFIG_OF_SYSTEM_SETUP) -int ft_system_setup(void *blob, struct bd_info *bd) -{ - int ret; - - ret = fdt_fixup_msmc_ram(blob, "/bus@100000", "sram@70000000"); - if (ret < 0) - ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000", - "sram@70000000"); - if (ret) - printf("%s: fixing up msmc ram failed %d\n", __func__, ret); - - return ret; -} -#endif - -#endif - #ifndef CONFIG_SYSRESET void reset_cpu(void) { diff --git a/arch/arm/mach-k3/common_fdt.c b/arch/arm/mach-k3/common_fdt.c new file mode 100644 index 000000000000..c86fe3a5890b --- /dev/null +++ b/arch/arm/mach-k3/common_fdt.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2023 Toradex - https://www.toradex.com/ + */ + +#include "common.h" +#include <dm.h> +#include <fdt_support.h> +#include <linux/soc/ti/ti_sci_protocol.h> + +static int fdt_fixup_msmc_ram(void *blob, char *parent_path, char *node_name) +{ + u64 msmc_start = 0, msmc_end = 0, msmc_size, reg[2]; + struct ti_sci_handle *ti_sci = get_ti_sci_handle(); + int ret, node, subnode, len, prev_node; + u32 range[4], addr, size; + const fdt32_t *sub_reg; + + ti_sci->ops.core_ops.query_msmc(ti_sci, &msmc_start, &msmc_end); + msmc_size = msmc_end - msmc_start + 1; + debug("%s: msmc_start = 0x%llx, msmc_size = 0x%llx\n", __func__, + msmc_start, msmc_size); + + /* find or create "msmc_sram node */ + ret = fdt_path_offset(blob, parent_path); + if (ret < 0) + return ret; + + node = fdt_find_or_add_subnode(blob, ret, node_name); + if (node < 0) + return node; + + ret = fdt_setprop_string(blob, node, "compatible", "mmio-sram"); + if (ret < 0) + return ret; + + reg[0] = cpu_to_fdt64(msmc_start); + reg[1] = cpu_to_fdt64(msmc_size); + ret = fdt_setprop(blob, node, "reg", reg, sizeof(reg)); + if (ret < 0) + return ret; + + fdt_setprop_cell(blob, node, "#address-cells", 1); + fdt_setprop_cell(blob, node, "#size-cells", 1); + + range[0] = 0; + range[1] = cpu_to_fdt32(msmc_start >> 32); + range[2] = cpu_to_fdt32(msmc_start & 0xffffffff); + range[3] = cpu_to_fdt32(msmc_size); + ret = fdt_setprop(blob, node, "ranges", range, sizeof(range)); + if (ret < 0) + return ret; + + subnode = fdt_first_subnode(blob, node); + prev_node = 0; + + /* Look for invalid subnodes and delete them */ + while (subnode >= 0) { + sub_reg = fdt_getprop(blob, subnode, "reg", &len); + addr = fdt_read_number(sub_reg, 1); + sub_reg++; + size = fdt_read_number(sub_reg, 1); + debug("%s: subnode = %d, addr = 0x%x. size = 0x%x\n", __func__, + subnode, addr, size); + if (addr + size > msmc_size || + !strncmp(fdt_get_name(blob, subnode, &len), "sysfw", 5) || + !strncmp(fdt_get_name(blob, subnode, &len), "l3cache", 7)) { + fdt_del_node(blob, subnode); + debug("%s: deleting subnode %d\n", __func__, subnode); + if (!prev_node) + subnode = fdt_first_subnode(blob, node); + else + subnode = fdt_next_subnode(blob, prev_node); + } else { + prev_node = subnode; + subnode = fdt_next_subnode(blob, prev_node); + } + } + + return 0; +} + +int fdt_fixup_msmc_ram_k3(void *blob) +{ + int ret; + + ret = fdt_fixup_msmc_ram(blob, "/bus@100000", "sram@70000000"); + if (ret < 0) + ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000", + "sram@70000000"); + if (ret) + printf("%s: fixing up msmc ram failed %d\n", __func__, ret); + + return ret; +} diff --git a/arch/arm/mach-k3/common_fdt.h b/arch/arm/mach-k3/common_fdt.h new file mode 100644 index 000000000000..46c3dc5e1197 --- /dev/null +++ b/arch/arm/mach-k3/common_fdt.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright 2023 Toradex - https://www.toradex.com/ + */ + +#ifndef _COMMON_FDT_H +#define _COMMON_FDT_H + +int fdt_fixup_msmc_ram_k3(void *blob); + +#endif /* _COMMON_FDT_H */ diff --git a/arch/arm/mach-k3/j721e_fdt.c b/arch/arm/mach-k3/j721e_fdt.c new file mode 100644 index 000000000000..652fe8d32bbb --- /dev/null +++ b/arch/arm/mach-k3/j721e_fdt.c @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2023 Toradex - https://www.toradex.com/ + */ + +#include "common_fdt.h" +#include <fdt_support.h> + +int ft_system_setup(void *blob, struct bd_info *bd) +{ + return fdt_fixup_msmc_ram_k3(blob); +} diff --git a/arch/arm/mach-k3/j721s2_fdt.c b/arch/arm/mach-k3/j721s2_fdt.c new file mode 100644 index 000000000000..652fe8d32bbb --- /dev/null +++ b/arch/arm/mach-k3/j721s2_fdt.c @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2023 Toradex - https://www.toradex.com/ + */ + +#include "common_fdt.h" +#include <fdt_support.h> + +int ft_system_setup(void *blob, struct bd_info *bd) +{ + return fdt_fixup_msmc_ram_k3(blob); +}