To fully deprecate the kernel's use of "riscv,isa",
of_early_processor_hartid() needs to first try using the new properties,
before falling back to "riscv,isa".
Reviewed-by: Andrew Jones <ajones@xxxxxxxxxxxxxxxx>
Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
---
arch/riscv/kernel/cpu.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c
index d0dfd88221df..9a4f4a23afcd 100644
--- a/arch/riscv/kernel/cpu.c
+++ b/arch/riscv/kernel/cpu.c
@@ -61,8 +61,29 @@ int riscv_early_of_processor_hartid(struct device_node *node, unsigned long *har
return -ENODEV;
}
+ if (of_property_read_string(node, "riscv,isa-base", &isa))
+ goto old_interface;
+
+ if (IS_ENABLED(CONFIG_32BIT) && strncasecmp(isa, "rv32i", 5))
+ return -ENODEV;
+
+ if (IS_ENABLED(CONFIG_64BIT) && strncasecmp(isa, "rv64i", 5))
+ return -ENODEV;
+
+ if (!of_property_present(node, "riscv,isa-extensions"))
+ return -ENODEV;
+
+ if (of_property_match_string(node, "riscv,isa-extensions", "i") < 0 ||
+ of_property_match_string(node, "riscv,isa-extensions", "m") < 0 ||
+ of_property_match_string(node, "riscv,isa-extensions", "a") < 0)
+ return -ENODEV;
+
+ return 0;
+
+old_interface:
if (of_property_read_string(node, "riscv,isa", &isa)) {
- pr_warn("CPU with hartid=%lu has no \"riscv,isa\" property\n", *hart);
+ pr_warn("CPU with hartid=%lu has no \"riscv,isa-base\" or \"riscv,isa\" property\n",
+ *hart);
return -ENODEV;
}
--
2.40.1
