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authorTom Rini <trini@konsulko.com>2018-05-30 08:43:04 -0400
committerTom Rini <trini@konsulko.com>2018-05-30 08:43:04 -0400
commit964d4f7211ec85b890e852d0226adba0b4f8c1c9 (patch)
tree7b682f156a9bde3b9c3d82a184091bd4445f15cd /arch/riscv/lib
parent9c2369a554437f072733c53ba0f5f5384f35b6d3 (diff)
parent6ffea11b89099d72029bc644f7664736ee7ca667 (diff)
Merge git://git.denx.de/u-boot-riscv
Diffstat (limited to 'arch/riscv/lib')
-rw-r--r--arch/riscv/lib/Makefile12
-rw-r--r--arch/riscv/lib/bootm.c4
-rw-r--r--arch/riscv/lib/crt0_riscv_efi.S151
-rw-r--r--arch/riscv/lib/elf_riscv32_efi.lds71
-rw-r--r--arch/riscv/lib/elf_riscv64_efi.lds71
-rw-r--r--arch/riscv/lib/reloc_riscv_efi.c98
-rw-r--r--arch/riscv/lib/setjmp.S65
7 files changed, 472 insertions, 0 deletions
diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile
index 0b671f7086..cc562f935a 100644
--- a/arch/riscv/lib/Makefile
+++ b/arch/riscv/lib/Makefile
@@ -10,3 +10,15 @@ obj-$(CONFIG_CMD_BOOTM) += bootm.o
obj-$(CONFIG_CMD_GO) += boot.o
obj-y += cache.o
obj-y += interrupts.o
+obj-y += setjmp.o
+
+# For building EFI apps
+CFLAGS_$(EFI_CRT0) := $(CFLAGS_EFI)
+CFLAGS_REMOVE_$(EFI_CRT0) := $(CFLAGS_NON_EFI)
+
+CFLAGS_$(EFI_RELOC) := $(CFLAGS_EFI)
+CFLAGS_REMOVE_$(EFI_RELOC) := $(CFLAGS_NON_EFI)
+
+extra-$(CONFIG_CMD_BOOTEFI_HELLO_COMPILE) += $(EFI_CRT0) $(EFI_RELOC)
+extra-$(CONFIG_CMD_BOOTEFI_SELFTEST) += $(EFI_CRT0) $(EFI_RELOC)
+extra-$(CONFIG_EFI) += $(EFI_CRT0) $(EFI_RELOC)
diff --git a/arch/riscv/lib/bootm.c b/arch/riscv/lib/bootm.c
index 8ede0485d4..2610a57bbf 100644
--- a/arch/riscv/lib/bootm.c
+++ b/arch/riscv/lib/bootm.c
@@ -15,6 +15,10 @@
DECLARE_GLOBAL_DATA_PTR;
+__weak void board_quiesce_devices(void)
+{
+}
+
int arch_fixup_fdt(void *blob)
{
return 0;
diff --git a/arch/riscv/lib/crt0_riscv_efi.S b/arch/riscv/lib/crt0_riscv_efi.S
new file mode 100644
index 0000000000..18f61f515a
--- /dev/null
+++ b/arch/riscv/lib/crt0_riscv_efi.S
@@ -0,0 +1,151 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * crt0-efi-riscv.S - PE/COFF header for RISC-V EFI applications
+ *
+ * Copright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
+ * Copright (C) 2018 Alexander Graf <agraf@suse.de>
+ *
+ * This file is inspired by arch/arm/lib/crt0_aarch64_efi.S
+ */
+
+#include <asm-generic/pe.h>
+
+#if __riscv_xlen == 64
+#define SIZE_LONG 8
+#define SAVE_LONG(reg, idx) sd reg, (idx*SIZE_LONG)(sp)
+#define LOAD_LONG(reg, idx) ld reg, (idx*SIZE_LONG)(sp)
+#define PE_MACHINE 0x5064
+#else
+#define SIZE_LONG 4
+#define SAVE_LONG(reg, idx) sw reg, (idx*SIZE_LONG)(sp)
+#define LOAD_LONG(reg, idx) lw reg, (idx*SIZE_LONG)(sp)
+#define PE_MACHINE 0x5032
+#endif
+
+
+ .section .text.head
+
+ /*
+ * Magic "MZ" signature for PE/COFF
+ */
+ .globl ImageBase
+ImageBase:
+ .ascii "MZ"
+ .skip 58 /* 'MZ' + pad + offset == 64 */
+ .long pe_header - ImageBase /* Offset to the PE header */
+pe_header:
+ .ascii "PE"
+ .short 0
+coff_header:
+ .short PE_MACHINE /* RISC-V 64/32-bit */
+ .short 2 /* nr_sections */
+ .long 0 /* TimeDateStamp */
+ .long 0 /* PointerToSymbolTable */
+ .long 1 /* NumberOfSymbols */
+ .short section_table - optional_header /* SizeOfOptionalHeader */
+ /*
+ * Characteristics: IMAGE_FILE_DEBUG_STRIPPED |
+ * IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_LINE_NUMS_STRIPPED
+ */
+ .short 0x206
+optional_header:
+ .short 0x20b /* PE32+ format */
+ .byte 0x02 /* MajorLinkerVersion */
+ .byte 0x14 /* MinorLinkerVersion */
+ .long _edata - _start /* SizeOfCode */
+ .long 0 /* SizeOfInitializedData */
+ .long 0 /* SizeOfUninitializedData */
+ .long _start - ImageBase /* AddressOfEntryPoint */
+ .long _start - ImageBase /* BaseOfCode */
+
+extra_header_fields:
+ .quad 0 /* ImageBase */
+ .long 0x20 /* SectionAlignment */
+ .long 0x8 /* FileAlignment */
+ .short 0 /* MajorOperatingSystemVersion */
+ .short 0 /* MinorOperatingSystemVersion */
+ .short 0 /* MajorImageVersion */
+ .short 0 /* MinorImageVersion */
+ .short 0 /* MajorSubsystemVersion */
+ .short 0 /* MinorSubsystemVersion */
+ .long 0 /* Win32VersionValue */
+
+ .long _edata - ImageBase /* SizeOfImage */
+
+ /*
+ * Everything before the kernel image is considered part of the header
+ */
+ .long _start - ImageBase /* SizeOfHeaders */
+ .long 0 /* CheckSum */
+ .short IMAGE_SUBSYSTEM_EFI_APPLICATION /* Subsystem */
+ .short 0 /* DllCharacteristics */
+ .quad 0 /* SizeOfStackReserve */
+ .quad 0 /* SizeOfStackCommit */
+ .quad 0 /* SizeOfHeapReserve */
+ .quad 0 /* SizeOfHeapCommit */
+ .long 0 /* LoaderFlags */
+ .long 0x6 /* NumberOfRvaAndSizes */
+
+ .quad 0 /* ExportTable */
+ .quad 0 /* ImportTable */
+ .quad 0 /* ResourceTable */
+ .quad 0 /* ExceptionTable */
+ .quad 0 /* CertificationTable */
+ .quad 0 /* BaseRelocationTable */
+
+ /* Section table */
+section_table:
+
+ /*
+ * The EFI application loader requires a relocation section
+ * because EFI applications must be relocatable. This is a
+ * dummy section as far as we are concerned.
+ */
+ .ascii ".reloc"
+ .byte 0
+ .byte 0 /* end of 0 padding of section name */
+ .long 0
+ .long 0
+ .long 0 /* SizeOfRawData */
+ .long 0 /* PointerToRawData */
+ .long 0 /* PointerToRelocations */
+ .long 0 /* PointerToLineNumbers */
+ .short 0 /* NumberOfRelocations */
+ .short 0 /* NumberOfLineNumbers */
+ .long 0x42100040 /* Characteristics (section flags) */
+
+
+ .ascii ".text"
+ .byte 0
+ .byte 0
+ .byte 0 /* end of 0 padding of section name */
+ .long _edata - _start /* VirtualSize */
+ .long _start - ImageBase /* VirtualAddress */
+ .long _edata - _start /* SizeOfRawData */
+ .long _start - ImageBase /* PointerToRawData */
+
+ .long 0 /* PointerToRelocations (0 for executables) */
+ .long 0 /* PointerToLineNumbers (0 for executables) */
+ .short 0 /* NumberOfRelocations (0 for executables) */
+ .short 0 /* NumberOfLineNumbers (0 for executables) */
+ .long 0xe0500020 /* Characteristics (section flags) */
+
+_start:
+ addi sp, sp, -(SIZE_LONG * 3)
+ SAVE_LONG(a0, 0)
+ SAVE_LONG(a1, 1)
+ SAVE_LONG(ra, 2)
+
+ lla a0, ImageBase
+ lla a1, _DYNAMIC
+ call _relocate
+ bne a0, zero, 0f
+
+ LOAD_LONG(a1, 1)
+ LOAD_LONG(a0, 0)
+ call efi_main
+
+ LOAD_LONG(ra, 2)
+
+0: addi sp, sp, (SIZE_LONG * 3)
+ ret
diff --git a/arch/riscv/lib/elf_riscv32_efi.lds b/arch/riscv/lib/elf_riscv32_efi.lds
new file mode 100644
index 0000000000..629705fc28
--- /dev/null
+++ b/arch/riscv/lib/elf_riscv32_efi.lds
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * U-Boot riscv32 EFI linker script
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Modified from arch/arm/lib/elf_aarch64_efi.lds
+ */
+
+OUTPUT_FORMAT("elf32-littleriscv", "elf32-littleriscv", "elf32-littleriscv")
+OUTPUT_ARCH(riscv)
+ENTRY(_start)
+SECTIONS
+{
+ .text 0x0 : {
+ _text = .;
+ *(.text.head)
+ *(.text)
+ *(.text.*)
+ *(.gnu.linkonce.t.*)
+ *(.srodata)
+ *(.rodata*)
+ . = ALIGN(16);
+ }
+ _etext = .;
+ _text_size = . - _text;
+ .dynamic : { *(.dynamic) }
+ .data : {
+ _data = .;
+ *(.sdata)
+ *(.data)
+ *(.data1)
+ *(.data.*)
+ *(.got.plt)
+ *(.got)
+
+ /*
+ * The EFI loader doesn't seem to like a .bss section, so we
+ * stick it all into .data:
+ */
+ . = ALIGN(16);
+ _bss = .;
+ *(.sbss)
+ *(.scommon)
+ *(.dynbss)
+ *(.bss)
+ *(.bss.*)
+ *(COMMON)
+ . = ALIGN(16);
+ _bss_end = .;
+ _edata = .;
+ }
+ .rela.dyn : { *(.rela.dyn) }
+ .rela.plt : { *(.rela.plt) }
+ .rela.got : { *(.rela.got) }
+ .rela.data : { *(.rela.data) *(.rela.data*) }
+ _data_size = . - _etext;
+
+ . = ALIGN(4096);
+ .dynsym : { *(.dynsym) }
+ . = ALIGN(4096);
+ .dynstr : { *(.dynstr) }
+ . = ALIGN(4096);
+ .note.gnu.build-id : { *(.note.gnu.build-id) }
+ /DISCARD/ : {
+ *(.rel.reloc)
+ *(.eh_frame)
+ *(.note.GNU-stack)
+ }
+ .comment 0 : { *(.comment) }
+}
diff --git a/arch/riscv/lib/elf_riscv64_efi.lds b/arch/riscv/lib/elf_riscv64_efi.lds
new file mode 100644
index 0000000000..aece030c37
--- /dev/null
+++ b/arch/riscv/lib/elf_riscv64_efi.lds
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * U-Boot riscv64 EFI linker script
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Modified from arch/arm/lib/elf_aarch64_efi.lds
+ */
+
+OUTPUT_FORMAT("elf64-littleriscv", "elf64-littleriscv", "elf64-littleriscv")
+OUTPUT_ARCH(riscv)
+ENTRY(_start)
+SECTIONS
+{
+ .text 0x0 : {
+ _text = .;
+ *(.text.head)
+ *(.text)
+ *(.text.*)
+ *(.gnu.linkonce.t.*)
+ *(.srodata)
+ *(.rodata*)
+ . = ALIGN(16);
+ }
+ _etext = .;
+ _text_size = . - _text;
+ .dynamic : { *(.dynamic) }
+ .data : {
+ _data = .;
+ *(.sdata)
+ *(.data)
+ *(.data1)
+ *(.data.*)
+ *(.got.plt)
+ *(.got)
+
+ /*
+ * The EFI loader doesn't seem to like a .bss section, so we
+ * stick it all into .data:
+ */
+ . = ALIGN(16);
+ _bss = .;
+ *(.sbss)
+ *(.scommon)
+ *(.dynbss)
+ *(.bss)
+ *(.bss.*)
+ *(COMMON)
+ . = ALIGN(16);
+ _bss_end = .;
+ _edata = .;
+ }
+ .rela.dyn : { *(.rela.dyn) }
+ .rela.plt : { *(.rela.plt) }
+ .rela.got : { *(.rela.got) }
+ .rela.data : { *(.rela.data) *(.rela.data*) }
+ _data_size = . - _etext;
+
+ . = ALIGN(4096);
+ .dynsym : { *(.dynsym) }
+ . = ALIGN(4096);
+ .dynstr : { *(.dynstr) }
+ . = ALIGN(4096);
+ .note.gnu.build-id : { *(.note.gnu.build-id) }
+ /DISCARD/ : {
+ *(.rel.reloc)
+ *(.eh_frame)
+ *(.note.GNU-stack)
+ }
+ .comment 0 : { *(.comment) }
+}
diff --git a/arch/riscv/lib/reloc_riscv_efi.c b/arch/riscv/lib/reloc_riscv_efi.c
new file mode 100644
index 0000000000..8b4b2b1d8f
--- /dev/null
+++ b/arch/riscv/lib/reloc_riscv_efi.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* reloc_riscv.c - position independent ELF shared object relocator
+ Copyright (C) 2018 Alexander Graf <agraf@suse.de>
+ Copyright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
+ Copyright (C) 1999 Hewlett-Packard Co.
+ Contributed by David Mosberger <davidm@hpl.hp.com>.
+
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the following
+ disclaimer in the documentation and/or other materials
+ provided with the distribution.
+ * Neither the name of Hewlett-Packard Co. nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ BE LIABLE FOR ANYDIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGE.
+*/
+
+#include <efi.h>
+
+#include <elf.h>
+
+#if __riscv_xlen == 64
+#define Elf_Dyn Elf64_Dyn
+#define Elf_Rela Elf64_Rela
+#define ELF_R_TYPE ELF64_R_TYPE
+#else
+#define Elf_Dyn Elf32_Dyn
+#define Elf_Rela Elf32_Rela
+#define ELF_R_TYPE ELF32_R_TYPE
+#endif
+
+efi_status_t _relocate(long ldbase, Elf_Dyn *dyn, efi_handle_t image,
+ struct efi_system_table *systab)
+{
+ long relsz = 0, relent = 0;
+ Elf_Rela *rel = 0;
+ unsigned long *addr;
+ int i;
+
+ for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {
+ switch (dyn[i].d_tag) {
+ case DT_RELA:
+ rel = (Elf_Rela *)((ulong)dyn[i].d_un.d_ptr + ldbase);
+ break;
+ case DT_RELASZ:
+ relsz = dyn[i].d_un.d_val;
+ break;
+ case DT_RELAENT:
+ relent = dyn[i].d_un.d_val;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (!rel && relent == 0)
+ return EFI_SUCCESS;
+
+ if (!rel || relent == 0)
+ return EFI_LOAD_ERROR;
+
+ while (relsz > 0) {
+ /* apply the relocs */
+ switch (ELF_R_TYPE(rel->r_info)) {
+ case R_RISCV_RELATIVE:
+ addr = (ulong *)(ldbase + rel->r_offset);
+ *addr = ldbase + rel->r_addend;
+ break;
+ default:
+ /* Panic */
+ while (1) ;
+ }
+ rel = (Elf_Rela *)((char *)rel + relent);
+ relsz -= relent;
+ }
+ return EFI_SUCCESS;
+}
diff --git a/arch/riscv/lib/setjmp.S b/arch/riscv/lib/setjmp.S
new file mode 100644
index 0000000000..8f5a6a23aa
--- /dev/null
+++ b/arch/riscv/lib/setjmp.S
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) 2018 Alexander Graf <agraf@suse.de>
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+
+#ifdef CONFIG_CPU_RISCV_64
+#define STORE_IDX(reg, idx) sd reg, (idx*8)(a0)
+#define LOAD_IDX(reg, idx) ld reg, (idx*8)(a0)
+#else
+#define STORE_IDX(reg, idx) sw reg, (idx*4)(a0)
+#define LOAD_IDX(reg, idx) lw reg, (idx*4)(a0)
+#endif
+
+.pushsection .text.setjmp, "ax"
+ENTRY(setjmp)
+ /* Preserve all callee-saved registers and the SP */
+ STORE_IDX(s0, 0)
+ STORE_IDX(s1, 1)
+ STORE_IDX(s2, 2)
+ STORE_IDX(s3, 3)
+ STORE_IDX(s4, 4)
+ STORE_IDX(s5, 5)
+ STORE_IDX(s6, 6)
+ STORE_IDX(s7, 7)
+ STORE_IDX(s8, 8)
+ STORE_IDX(s9, 9)
+ STORE_IDX(s10, 10)
+ STORE_IDX(s11, 11)
+ STORE_IDX(ra, 12)
+ STORE_IDX(sp, 13)
+ li a0, 0
+ ret
+ENDPROC(setjmp)
+.popsection
+
+.pushsection .text.longjmp, "ax"
+ENTRY(longjmp)
+ LOAD_IDX(s0, 0)
+ LOAD_IDX(s1, 1)
+ LOAD_IDX(s2, 2)
+ LOAD_IDX(s3, 3)
+ LOAD_IDX(s4, 4)
+ LOAD_IDX(s5, 5)
+ LOAD_IDX(s6, 6)
+ LOAD_IDX(s7, 7)
+ LOAD_IDX(s8, 8)
+ LOAD_IDX(s9, 9)
+ LOAD_IDX(s10, 10)
+ LOAD_IDX(s11, 11)
+ LOAD_IDX(ra, 12)
+ LOAD_IDX(sp, 13)
+
+ /* Move the return value in place, but return 1 if passed 0. */
+ beq a1, zero, longjmp_1
+ mv a0, a1
+ ret
+
+ longjmp_1:
+ li a0, 1
+ ret
+ENDPROC(longjmp)
+.popsection