RISCV: add this architecture to cbfstool

Change-Id: I6d972e595f12585cda08e1a6d2b94b4bf4f212f5
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/7067
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

util/cbfstool/cbfs.h

@@ -53,6 +53,7 @@ struct cbfs_header {
 #define CBFS_ARCHITECTURE_X86      0x00000001
 #define CBFS_ARCHITECTURE_ARM      0x00000010
 #define CBFS_ARCHITECTURE_AARCH64  0x0000aa64
+#define CBFS_ARCHITECTURE_RISCV    0xc001d0de
 
 #define CBFS_FILE_MAGIC "LARCHIVE"
 

util/cbfstool/common.c

@@ -132,6 +132,7 @@ static struct {
 } arch_names[] = {
 	{ CBFS_ARCHITECTURE_AARCH64, "arm64" },
 	{ CBFS_ARCHITECTURE_ARM, "arm" },
+	{ CBFS_ARCHITECTURE_RISCV, "riscv" },
 	{ CBFS_ARCHITECTURE_X86, "x86" },
 	{ CBFS_ARCHITECTURE_UNKNOWN, "unknown" }
 };

util/cbfstool/elf.h

@@ -2688,4 +2688,48 @@ typedef Elf32_Addr Elf32_Conflict;
 #define R_M32R_NUM		256	/* Keep this the last entry. */
 
 
+/* RISC-V relocation types */
+#define R_RISCV_NONE		0
+#define R_RISCV_32		2
+#define R_RISCV_REL32		3
+#define R_RISCV_JAL		4
+#define R_RISCV_HI20		5
+#define R_RISCV_LO12_I		6
+#define R_RISCV_LO12_S		7
+#define R_RISCV_PCREL_LO12_I	8
+#define R_RISCV_PCREL_LO12_S	9
+#define R_RISCV_BRANCH		10
+#define R_RISCV_CALL		11
+#define R_RISCV_PCREL_HI20	12
+#define R_RISCV_CALL_PLT	13
+#define R_RISCV_64		18
+#define R_RISCV_GOT_HI20	22
+#define R_RISCV_GOT_LO12	23
+#define R_RISCV_COPY		24
+#define R_RISCV_JUMP_SLOT	25
+/* TLS relocations */
+#define R_RISCV_TPREL_HI20	30
+#define R_RISCV_TPREL_LO12_I	31
+#define R_RISCV_TPREL_LO12_S	32
+#define R_RISCV_TLS_DTPMOD32	38
+#define R_RISCV_TLS_DTPREL32	39
+#define R_RISCV_TLS_DTPMOD64	40
+#define R_RISCV_TLS_DTPREL64	41
+#define R_RISCV_TLS_GD		42
+#define R_RISCV_TLS_DTPREL_HI16	44
+#define R_RISCV_TLS_DTPREL_LO16	45
+#define R_RISCV_TLS_GOTTPREL	46
+#define R_RISCV_TLS_TPREL32	47
+#define R_RISCV_TLS_TPREL64	48
+#define R_RISCV_TLS_GOT_HI20	51
+#define R_RISCV_TLS_GOT_LO12	52
+#define R_RISCV_TLS_GD_HI20	53
+#define R_RISCV_TLS_GD_LO12	54
+#define R_RISCV_GLOB_DAT	57
+#define R_RISCV_ADD32		58
+#define R_RISCV_ADD64		59
+#define R_RISCV_SUB32		60
+#define R_RISCV_SUB64		61
+
+#define EM_RISCV	0xF3
 #endif	/* elf.h */

util/cbfstool/elfheaders.c

@@ -611,6 +611,7 @@ elf_headers(const struct buffer *pinput,
 	// The tool may work in architecture-independent way.
 	if (arch != CBFS_ARCHITECTURE_UNKNOWN &&
 	    !((ehdr->e_machine == EM_ARM) && (arch == CBFS_ARCHITECTURE_ARM)) &&
+	    !((ehdr->e_machine == EM_RISCV) && (arch == CBFS_ARCHITECTURE_RISCV)) &&
 	    !((ehdr->e_machine == EM_386) && (arch == CBFS_ARCHITECTURE_X86))) {
 		ERROR("The stage file has the wrong architecture\n");
 		return -1;