Clear L2 LIM memory on StarFive JH7110, avoid some unexpect exception.
@@ -42,4 +42,18 @@ void harts_early_init(void)
*/
if (CONFIG_IS_ENABLED(RISCV_MMODE))
csr_write(CSR_U74_FEATURE_DISABLE, 0);
+
+#ifdef CONFIG_SPL_BUILD
+ /*clear L2 LIM memory
+ * set __bss_end to 0x81e0000 region to zero
+ */
+ __asm__ __volatile__ (
+ "la t1, __bss_end\n"
+ "li t2, 0x81e0000\n"
+ "spl_clear_l2im:\n"
+ "addi t1, t1, 8\n"
+ "sd zero, 0(t1)\n"
+ "blt t1, t2, spl_clear_l2im\n");
+#endif
}