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bootm: Pass SMP core ID and DTB address for ELF-formatted kernels

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When booting RISC-V ELF-formatted kernel images (IH_TYPE_KERNEL + IH_OS_ELF),
explicitly pass SMP hart ID (via a0/argc) and DTB address (via a1/argv)
to comply with modern SMP-enabled kernels' boot protocol requirements.
See https://www.kernel.org/doc/html/latest/arch/riscv/boot.html#register-state

Signed-off-by: Zone.N <zone.niuzh@hotmail.com>
This commit is contained in:
牛 志宏
2025-06-13 01:45:28 +00:00
committed by Tom Rini
parent 778c552f86
commit 7fd2795a4b
1 changed files with 11 additions and 0 deletions
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boot/bootm_os.c
+11
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@@ -402,6 +402,17 @@ static int do_bootm_elf(int flag, struct bootm_info *bmi)
if (flag != BOOTM_STATE_OS_GO)
return 0;
/*
* Required per RISC-V boot protocol:
* a0(argc) = hartid of the current core
* a1(argv) = address of the devicetree in memory
* https://www.kernel.org/doc/html/latest/arch/riscv/boot.html#register-state
*/
#if defined(CONFIG_RISCV)
bmi->argc = gd->arch.boot_hart;
bmi->argv = (char **)bmi->images->ft_addr;
#endif
bootelf(bmi->images->ep, flags, bmi->argc, bmi->argv);
return 1;