diff mbox series

[wrynose] u-boot: re-enable RISC-V compressed (c) ISA extension

Message ID 20260714170115.734609-1-gustavo.nihei@espressif.com
State New
Headers show
Series [wrynose] u-boot: re-enable RISC-V compressed (c) ISA extension | expand

Commit Message

Gustavo Henrique Nihei July 14, 2026, 5:01 p.m. UTC 
SRC_URI_RISCV clears every RISC-V ISA extension via
u-boot-riscv-isa_clear.cfg, then conditionally re-adds a fragment per
TUNE_FEATURES bit: a, f, d, b/zbb, zicbom. There is no line for c, even
though u-boot-riscv-isa_c.cfg (CONFIG_RISCV_ISA_C=y) already ships in
the recipe. So for any tune with c in TUNE_FEATURES (e.g. the default
rv64gc/rv32gc tunes), compressed instructions stay disabled after the
clear fragment runs.

Building without RVC noticeably inflates .text (measured ~17.5% larger
on qemuriscv64) and, on size-constrained RISC-V SPL targets, can make
the SPL .bss VMA overlap the .text VMA and fail the link.

Add the missing "c" mapping line, mirroring the existing per-extension
entries (a, f, d, b/zbb, zicbom) already present in SRC_URI_RISCV.

Same fix as master commit fef027f2350cec0e6b890b636d2529a13f1fab58
("u-boot: re-enable RISC-V compressed (c) ISA extension"), reapplied
here since wrynose ships u-boot_2026.01.bb rather than
u-boot_2026.04.bb.

Fixes: cd9e7304481b ("u-boot: Overhaul UBOOT_CONFIG flow")

AI-Generated: Uses Cursor

Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
---
 meta/recipes-bsp/u-boot/u-boot_2026.01.bb | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/meta/recipes-bsp/u-boot/u-boot_2026.01.bb b/meta/recipes-bsp/u-boot/u-boot_2026.01.bb
index ac1b0b9b2b..6d9bc126a1 100644
--- a/meta/recipes-bsp/u-boot/u-boot_2026.01.bb
+++ b/meta/recipes-bsp/u-boot/u-boot_2026.01.bb
@@ -14,6 +14,7 @@  SRC_URI_RISCV = "\
     ${@bb.utils.contains    ("TUNE_FEATURES", "a",      "file://u-boot-riscv-isa_a.cfg", "", d)} \
     ${@bb.utils.contains    ("TUNE_FEATURES", "f",      "file://u-boot-riscv-isa_f.cfg", "", d)} \
     ${@bb.utils.contains    ("TUNE_FEATURES", "d",      "file://u-boot-riscv-isa_d.cfg", "", d)} \
+    ${@bb.utils.contains    ("TUNE_FEATURES", "c",      "file://u-boot-riscv-isa_c.cfg", "", d)} \
     ${@bb.utils.contains_any("TUNE_FEATURES", "b zbb",  "file://u-boot-riscv-isa_zbb.cfg", "", d)} \
     ${@bb.utils.contains    ("TUNE_FEATURES", "zicbom", "file://u-boot-riscv-isa_zicbom.cfg", "", d)} \
     "