[top_earlgrey] Fix vendor in JTAG IDCODE

The JTAG IDCODE field uses a manufacturer ID from the JEDEC list of manufacturers. This list organizes its entries in banks. Google is in bank 9. The previously used number was from bank 10. With this change, OpenOCD reports the right vendor: ``` $ /tools/openocd/bin/openocd -s util/openocd -f board/lowrisc-earlgrey-nexysvideo.cfg Open On-Chip Debugger 0.10.0+dev-00823-g20804cb4d (2019-10-30-22:27) Licensed under GNU GPL v2 For bug reports, read http://openocd.org/doc/doxygen/bugs.html none separate Info : Listening on port 6666 for tcl connections Info : Listening on port 4444 for telnet connections Info : clock speed 30000 kHz Info : JTAG tap: riscv.tap tap/device found: 0x04f5484d (mfg: 0x426 (Google Inc), part: 0x4f54, ver: 0x0) Info : datacount=2 progbufsize=8 Info : Examined RISC-V core; found 1 harts Info : hart 0: XLEN=32, misa=0x40001104 Info : Listening on port 3333 for gdb connections ``` Fixes #490
lowRISC · Nov 4, 2019 · 8bbd8b8 · 8bbd8b8
1 parent 1d0d927
commit 8bbd8b8
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Showing 3 changed files with 3 additions and 3 deletions.
diff --git a/hw/top_earlgrey/doc/top_earlgrey.sv.tpl b/hw/top_earlgrey/doc/top_earlgrey.sv.tpl
@@ -64,7 +64,7 @@ module top_${top["name"]} #(
   localparam JTAG_IDCODE = {
     4'h0,     // Version
     16'h4F54, // Part Number: "OT"
-    11'h4A6,  // Manufacturer Identity: Google
+    11'h426,  // Manufacturer Identity: Google
     1'b1      // (fixed)
   };
 

diff --git a/hw/top_earlgrey/rtl/autogen/top_earlgrey.sv b/hw/top_earlgrey/rtl/autogen/top_earlgrey.sv
@@ -42,7 +42,7 @@ module top_earlgrey #(
   localparam JTAG_IDCODE = {
     4'h0,     // Version
     16'h4F54, // Part Number: "OT"
-    11'h4A6,  // Manufacturer Identity: Google
+    11'h426,  // Manufacturer Identity: Google
     1'b1      // (fixed)
   };
 

diff --git a/util/openocd/target/lowrisc-earlgrey.cfg b/util/openocd/target/lowrisc-earlgrey.cfg
@@ -13,7 +13,7 @@ if { [info exists CHIPNAME] } {
 if { [info exists CPUTAPID ] } {
    set _CPUTAPID $CPUTAPID
 } else {
-   set _CPUTAPID 0x04F5494D
+   set _CPUTAPID 0x04f5484d
 }
 
 jtag newtap $_CHIPNAME tap -irlen 5 -expected-id $_CPUTAPID