imxtools: add pin map and decoding tool

Also add the tool which was used to generate the map on wiki.

Change-Id: I54f3474028b5fa75348564437ec1b46ba20f071b

1 files changed, 88 insertions, 0 deletions

diff --git a/utils/imxtools/misc/io_pins.c b/utils/imxtools/misc/io_pins.c
new file mode 100644
index 0000000..37e0331
--- /dev/null
+++ b/utils/imxtools/misc/io_pins.c
@@ -0,0 +1,88 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "map.h"
+
+bool read_number(const char *str, uint32_t *value)
+{
+    char *end;
+    long int ret = strtol(str, &end, 0);
+    if((str + strlen(str)) != end)
+        return false;
+    if(ret < 0)
+        return false;
+    *value = ret;
+    return true;
+}
+
+int main(int argc, char **argv)
+{
+    if(argc != 6)
+    {
+        printf("usage: %s <soc> <ver> <mux> <clr mask> <set mask>\n", argv[0]);
+        printf("  where <soc> is stmp3700 or imx233\n");
+        printf("  where <ver> is bga169 or lqfp128\n");
+        printf("  where <mux> is between 0 and 7");
+        printf("  where <mask> is a number or ~number\n");
+        return 1;
+    }
+
+    const char *soc = argv[1];
+    const char *ver = argv[2];
+    const char *s_mux = argv[3];
+    const char *s_clr_mask = argv[4];
+    const char *s_set_mask = argv[5];
+    uint32_t mux, clr_mask, set_mask;
+
+    if(!read_number(s_mux, &mux) || mux >= NR_BANKS * 2)
+    {
+        printf("invalid mux number\n");
+        return 1;
+    }
+    if(!read_number(s_clr_mask, &clr_mask))
+    {
+        printf("invalid clear mask\n");
+        return 2;
+    }
+    if(!read_number(s_set_mask, &set_mask))
+    {
+        printf("invalid set mask\n");
+        return 3;
+    }
+
+    struct bank_map_t *map = NULL;
+    for(unsigned i = 0; i < NR_SOCS; i++)
+        if(strcmp(soc, socs[i].soc) == 0 && strcmp(ver, socs[i].ver) == 0)
+            map = socs[i].map;
+    if(map == NULL)
+    {
+        printf("no valid map found\n");
+        return 4;
+    }
+
+    if(clr_mask & set_mask)
+        printf("warning: set and clear mask intersect!\n");
+    unsigned bank = mux / 2;
+    unsigned offset = 16 * (mux % 2);
+    for(unsigned i = 0; i < 16; i++)
+    {
+        unsigned pin = offset + i;
+        uint32_t pin_shift = 2 * i;
+        uint32_t set_fn = (set_mask >> pin_shift) & 3;
+        uint32_t clr_fn = (clr_mask >> pin_shift) & 3;
+        if(set_fn == 0 && clr_fn == 0)
+            continue;
+        bool partial_mask = (set_fn | clr_fn) != 3;
+        
+        printf("B%dP%02d => %s (select = %d)", bank, pin,
+            map[bank].pins[pin].function[set_fn].name, set_fn);
+        if(partial_mask)
+            printf(" (warning: partial mask)");
+        printf("\n");
+    }
+    
+    return 0;
+}