hwstub: add proper PP support

- drop support for PP500x: it's very different from other PP and although
  it would be possible to support them, I don't have one to test the code
- make sure only the CPU is started
- add PP descriptor to report chip ID and revision
- add code in shell and lua to support pp (no register description yet)
- compile for ARMv4 because PP502x is an ARM7TDMI

Change-Id: I36c4e465dfc2cfdfe7433b2f65cc8f6f0720fe62

1 files changed, 23 insertions, 0 deletions

diff --git a/utils/hwstub/tools/hwstub_shell.cpp b/utils/hwstub/tools/hwstub_shell.cpp
index 61cb617509..cdacd81821 100644
--- a/utils/hwstub/tools/hwstub_shell.cpp
+++ b/utils/hwstub/tools/hwstub_shell.cpp
@@ -44,6 +44,7 @@ struct hwstub_version_desc_t g_hwdev_ver;
 struct hwstub_layout_desc_t g_hwdev_layout;
 struct hwstub_target_desc_t g_hwdev_target;
 struct hwstub_stmp_desc_t g_hwdev_stmp;
+struct hwstub_pp_desc_t g_hwdev_pp;
 lua_State *g_lua;
 
 /**
@@ -278,6 +279,8 @@ bool my_lua_import_hwstub()
     lua_setfield(g_lua, -2, "UNK");
     lua_pushinteger(g_lua, HWSTUB_TARGET_STMP);
     lua_setfield(g_lua, -2, "STMP");
+    lua_pushinteger(g_lua, HWSTUB_TARGET_PP);
+    lua_setfield(g_lua, -2, "PP");
     lua_pushinteger(g_lua, HWSTUB_TARGET_RK27);
     lua_setfield(g_lua, -2, "RK27");
     lua_setfield(g_lua, -2, "target");
@@ -293,6 +296,15 @@ bool my_lua_import_hwstub()
         lua_setfield(g_lua, -2, "package");
         lua_setfield(g_lua, -2, "stmp");
     }
+    else if(g_hwdev_target.dID == HWSTUB_TARGET_PP)
+    {
+        lua_newtable(g_lua); // pp
+        lua_pushinteger(g_lua, g_hwdev_pp.wChipID);
+        lua_setfield(g_lua, -2, "chipid");
+        lua_pushlstring(g_lua, (const char *)g_hwdev_pp.bRevision, 2);
+        lua_setfield(g_lua, -2, "rev");
+        lua_setfield(g_lua, -2, "pp");
+    }
 
     lua_pushlightuserdata(g_lua, (void *)&hw_read8);
     lua_pushcclosure(g_lua, my_lua_readn, 1);
@@ -791,6 +803,17 @@ int main(int argc, char **argv)
             goto Lerr;
         }
     }
+
+    // get PP specific information
+    if(g_hwdev_target.dID == HWSTUB_TARGET_PP)
+    {
+        ret = hwstub_get_desc(g_hwdev, HWSTUB_DT_PP, &g_hwdev_pp, sizeof(g_hwdev_pp));
+        if(ret != sizeof(g_hwdev_pp))
+        {
+            printf("Cannot get pp: %d\n", ret);
+            goto Lerr;
+        }
+    }
     /** Init lua */
 
     // create lua state