powerpc/fsl: add 'pixis_reset dump' command

Add the 'pixis_reset dump' command, which displays the contents of the PIXIS
registers.  This command is only available if DEBUG is defined.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/board/freescale/common/ngpixis.c b/board/freescale/common/ngpixis.c
index 4e01e5a0a2e6660eb202b5d9514c8ac4876ad788..765f0359bfb03abdbf7cb19ee83be27252518e09 100644 (file)
--- a/board/freescale/common/ngpixis.c
+++ b/board/freescale/common/ngpixis.c
@@ -119,11 +119,50 @@ void __set_altbank(void)
 }
 void set_altbank(void) __attribute__((weak, alias("__set_altbank")));
 
+#ifdef DEBUG
+static void pixis_dump_regs(void)
+{
+       unsigned int i;
+
+       printf("id=%02x\n", PIXIS_READ(id));
+       printf("arch=%02x\n", PIXIS_READ(arch));
+       printf("scver=%02x\n", PIXIS_READ(scver));
+       printf("csr=%02x\n", PIXIS_READ(csr));
+       printf("rst=%02x\n", PIXIS_READ(rst));
+       printf("aux=%02x\n", PIXIS_READ(aux));
+       printf("spd=%02x\n", PIXIS_READ(spd));
+       printf("brdcfg0=%02x\n", PIXIS_READ(brdcfg0));
+       printf("brdcfg1=%02x\n", PIXIS_READ(brdcfg1));
+       printf("addr=%02x\n", PIXIS_READ(addr));
+       printf("data=%02x\n", PIXIS_READ(data));
+       printf("led=%02x\n", PIXIS_READ(led));
+       printf("vctl=%02x\n", PIXIS_READ(vctl));
+       printf("vstat=%02x\n", PIXIS_READ(vstat));
+       printf("vcfgen0=%02x\n", PIXIS_READ(vcfgen0));
+       printf("ocmcsr=%02x\n", PIXIS_READ(ocmcsr));
+       printf("ocmmsg=%02x\n", PIXIS_READ(ocmmsg));
+       printf("gmdbg=%02x\n", PIXIS_READ(gmdbg));
+       printf("sclk=%02x%02x%02x\n",
+              PIXIS_READ(sclk[0]), PIXIS_READ(sclk[1]), PIXIS_READ(sclk[2]));
+       printf("dclk=%02x%02x%02x\n",
+              PIXIS_READ(dclk[0]), PIXIS_READ(dclk[1]), PIXIS_READ(dclk[2]));
+       printf("watch=%02x\n", PIXIS_READ(watch));
+
+       for (i = 0; i < 8; i++) {
+               printf("SW%u=%02x/%02x ", i + 1,
+                       PIXIS_READ(s[i].sw), PIXIS_READ(s[i].en));
+       }
+       putc('\n');
+}
+#endif
 
 int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
        unsigned int i;
        char *p_altbank = NULL;
+#ifdef DEBUG
+       char *p_dump = NULL;
+#endif
        char *unknown_param = NULL;
 
        /* No args is a simple reset request.
@@ -137,6 +176,13 @@ int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                        continue;
                }
 
+#ifdef DEBUG
+               if (strcmp(argv[i], "dump") == 0) {
+                       p_dump = argv[i];
+                       continue;
+               }
+#endif
+
                unknown_param = argv[i];
        }
 
@@ -145,6 +191,15 @@ int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                return 1;
        }
 
+#ifdef DEBUG
+       if (p_dump) {
+               pixis_dump_regs();
+
+               /* 'dump' ignores other commands */
+               return 0;
+       }
+#endif
+
        if (p_altbank)
                set_altbank();
        else
@@ -161,4 +216,7 @@ U_BOOT_CMD(
        "Reset the board using the FPGA sequencer",
        "- hard reset to default bank\n"
        "pixis_reset altbank - reset to alternate bank\n"
+#ifdef DEBUG
+       "pixis_reset dump - display the PIXIS registers\n"
+#endif
        );