gistfile1.txt

diff --git a/litex/soc/software/bios/main.c b/litex/soc/software/bios/main.c
index 621d377a..1fb0be58 100644
--- a/litex/soc/software/bios/main.c
+++ b/litex/soc/software/bios/main.c
@@ -459,6 +459,12 @@ static void do_command(char *c)
 #endif
 	else if(strcmp(token, "memtest") == 0) memtest();
 #endif
+	else if(strcmp(token, "csr_test") == 0) {
+		printf("mr 0x82000004 32:\n");
+		mr("0x82000004", "16");
+		volatile unsigned int *scratch = (unsigned int *)0x82000004;
+		printf("scratch seen by CPU: 0x%08x\n", *scratch);
+	}
 
 	else if(strcmp(token, "") != 0)
 		printf("Command not found\n")


lxsim --cpu-type=vexriscv --csr-data-width=32

litex> csr_test
mr 0x82000004 32:
Memory dump:
0x82000004  78 56 34 12 00 00 00 00 00 00 00 00 00 00 00 00  xV4.............
scratch seen by CPU: 0x12345678


lxsim --cpu-type=lm32 --csr-data-width=32

litex> csr_test
mr 0x82000004 32:
Memory dump:
0x82000004  12 34 56 78 00 00 00 00 00 00 00 00 00 00 00 00  .4Vx............
scratch seen by CPU: 0x12345678