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Fixed SBI base extension implementation

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This commit is contained in:
Valentin Haudiquet
2023-10-20 11:14:38 +02:00
parent dcdebcd8e4
commit bdc091aab2
1 changed files with 5 additions and 1 deletions
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6
src/devices/sbi/sbi.c
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@@ -13,16 +13,20 @@ void sbi_call(rv32_cpu_t* cpu, uint32_t extension_id, uint32_t func_id)
case SBI_FUNCTION_GET_SPEC_VERSION: case SBI_FUNCTION_GET_SPEC_VERSION:
// Format: [31(reserved,0) 7 bits(major) 24 bits(minor)] // Format: [31(reserved,0) 7 bits(major) 24 bits(minor)]
// Version 2.0 // Version 2.0
cpu->regs.a0 = 0x2000000; cpu->regs.a0 = 0;
cpu->regs.a1 = 0x2000000;
break; break;
case SBI_FUNCTION_GET_MVENDOR_ID: case SBI_FUNCTION_GET_MVENDOR_ID:
cpu->regs.a0 = 0; cpu->regs.a0 = 0;
cpu->regs.a1 = 0;
break; break;
case SBI_FUNCTION_GET_MARCH_ID: case SBI_FUNCTION_GET_MARCH_ID:
cpu->regs.a0 = 0; cpu->regs.a0 = 0;
cpu->regs.a1 = 0;
break; break;
case SBI_FUNCTION_GET_MIMPL_ID: case SBI_FUNCTION_GET_MIMPL_ID:
cpu->regs.a0 = 0; cpu->regs.a0 = 0;
cpu->regs.a1 = 0;
break; break;
default: default:
fprintf(stderr, "sbi_call: unknown function id 0x%x for base extension\n", func_id); fprintf(stderr, "sbi_call: unknown function id 0x%x for base extension\n", func_id);