1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
# RISCV Architecture definition
# Based on the RISC-V Instruction Set Manual Volume I: Unprivileged ISA from May 2025
# As well as the RISC-V options for using GCC (as of June 2025)
# Note: the following should be implemented in the order that GCC expects
# -march= values to be defined in.
# Base ISA
# All supported march strings must start with rv32 or rv64
TUNEVALID[rv] = "RISC-V"
TUNE_RISCV_ARCH = "${@bb.utils.contains("TUNE_FEATURES", "rv", "riscv", "", d)}"
TUNE_RISCV_MARCH = "${@bb.utils.contains("TUNE_FEATURES", "rv", "rv", "", d)}"
TUNE_RISCV_ABI = ""
# There are two primary ABIs, ilp32 and lp64
# There are variants of both, that appears to be based on extensions above
# For example:
# rv32i uses ilp32, rv32e uses ilp32e, rv32f uses ilp32f
# rv64i uses lp64, rv64if uses lp64f, rv64id uses lp64d
TUNEVALID[32] = "ISA XLEN - 32-bit"
TUNECONFLICTS[32] = "64"
TUNE_RISCV_ARCH .= "${@bb.utils.contains("TUNE_FEATURES", "32", "32", "", d)}"
TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "32", "32", "", d)}"
TUNE_RISCV_ABI .= "${@bb.utils.contains("TUNE_FEATURES", "32", "ilp32", "", d)}"
TUNEVALID[64] = "ISA XLEN - 64-bit"
TUNECONFLICTS[64] = "32"
TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "64", "64", "", d)}"
TUNE_RISCV_ARCH .= "${@bb.utils.contains("TUNE_FEATURES", "64", "64", "", d)}"
TUNE_RISCV_ABI .= "${@bb.utils.contains("TUNE_FEATURES", "64", "lp64", "", d)}"
# The package arch starts with the canonical arch, but adds some extensions to make
# package compatibility clear
TUNE_RISCV_PKGARCH = "${TUNE_RISCV_ARCH}"
# i, e, or g are defined by gcc, but 'g' refers to 'i' + extensions 'MAFD Zicsr Zifencei'
# So 'g' will not be defined here as it is an abbreviation of the expanded version
TUNEVALID[e] = "Reduced register base integer extension"
TUNECONFLICTS[e] = "i"
TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "e", "e", "", d)}"
TUNE_RISCV_ABI .= "${@bb.utils.contains("TUNE_FEATURES", "e", "e", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "e", "e", "", d)}"
TUNEVALID[i] = "Base integer extension"
TUNECONFLICTS[i] = "e"
TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "i", "i", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "i", "i", "", d)}"
# Extensions
TUNEVALID[m] = "Integer multiplication and division extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "m", "m", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "m", "m", "", d)}"
TUNEVALID[a] = "Atomic extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "a", "a", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "a", "a", "", d)}"
TUNEVALID[f] = "Single-precision floating-point extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "f d", "f", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "f d", "f", "", d)}"
TUNEVALID[d] = "Double-precision floating-point extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "d", "d", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "d", "d", "", d)}"
# Only f OR d, but just one
TUNE_RISCV_ABI .= "${@bb.utils.contains("TUNE_FEATURES", "d", "d", bb.utils.contains("TUNE_FEATURES", "f", "f", "", d), d)}"
TUNEVALID[c] = "Compressed extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "c", "c", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "c", "c", "", d)}"
TUNEVALID[b] = "Bit Manipulation extension"
# Handled below via zba, zbb, zbs
# This matches current Linux kernel behavior
#TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "b", "b", "", d)}"
#TUNE_RISCV_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "b", "b", "", d)}"
TUNEVALID[v] = "Vector operations extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "v", "v", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "v", "v", "", d)}"
# Now the special Z extensions
TUNEVALID[zicbom] = "Cache-block management extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "zicbom", "_zicbom", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "zicbom", "_zicbom", "", d)}"
TUNEVALID[zicsr] = "Control and status register access extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "zicsr f d", "_zicsr", "", d)}"
# If zicsr (or zifencei) is in the path, OpenSBI fails to use the extensions, do to (Makefile):
# # Check whether the assembler and the compiler support the Zicsr and Zifencei extensions
# CC_SUPPORT_ZICSR_ZIFENCEI := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) -nostdlib -march=rv$(OPENSBI_CC_XLEN)imafd_zicsr_zifencei -x c /dev/null -o /dev/null 2>&1 | grep -e "zicsr" -e "zifencei" > /dev/null && echo n || echo y)
# this will match on the path containing zicsr or zifencei when an error is reported, which
# will always happens in this check.
#
# Yocto Project Bugzilla 15897
#
#TUNE_RISCV_PKGARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "zicsr f d", "_zicsr", "", d)}"
TUNEVALID[zifencei] = "Instruction-fetch fence extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains("TUNE_FEATURES", "zifencei", "_zifencei", "", d)}"
# See above Bug 15897
#TUNE_RISCV_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "zifencei", "_zifencei", "", d)}"
TUNEVALID[zba] = "Address bit manipulation extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "b zba", "_zba", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "b zba", "_zba", "", d)}"
TUNEVALID[zbb] = "Basic bit manipulation extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "b zbb", "_zbb", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "b zbb", "_zbb", "", d)}"
TUNEVALID[zbc] = "Carry-less multiplication extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "zbc", "_zbc", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "zbc", "_zbc", "", d)}"
TUNEVALID[zbs] = "Single-bit manipulation extension"
TUNE_RISCV_MARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "b zbs", "_zbs", "", d)}"
TUNE_RISCV_PKGARCH .= "${@bb.utils.contains_any("TUNE_FEATURES", "b zbs", "_zbs", "", d)}"
# Construct TUNE_CCARGS
# This should result in a CCARG similar to:
# -march=rv32imac -mabi=ilp32
TUNE_CCARGS = "${@ '-march=${TUNE_RISCV_MARCH} -mabi=${TUNE_RISCV_ABI}' if not d.getVar('TUNE_CCARGS:tune-${DEFAULTTUNE}') else 'TUNE_CCARGS:tune-${DEFAULTTUNE}'}"
# Construct TUNE_ARCH
# This should result in an arch string similar to:
# riscv32
TUNE_ARCH = "${TUNE_RISCV_ARCH}"
# Construct TUNE_PKGARCH
# This should result in a package are like:
# riscv32imac
TUNE_PKGARCH = "${TUNE_RISCV_PKGARCH}"
# Misc settings
# Fix: ld: unrecognized option '--hash-style=sysv'
LINKER_HASH_STYLE:libc-newlib = ""
LINKER_HASH_STYLE:libc-picolibc = ""
# Fix: ld: unrecognized option '--hash-style=gnu'
LINKER_HASH_STYLE:libc-baremetal = ""
|
