[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
diff --git a/hw/top_earlgrey/doc/top_earlgrey.sv.tpl b/hw/top_earlgrey/doc/top_earlgrey.sv.tpl
index e91a6f1..dce7bd1 100644
--- a/hw/top_earlgrey/doc/top_earlgrey.sv.tpl
+++ b/hw/top_earlgrey/doc/top_earlgrey.sv.tpl
@@ -64,7 +64,7 @@
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
index 6d064bb..345bd6e 100644
--- a/hw/top_earlgrey/rtl/autogen/top_earlgrey.sv
+++ b/hw/top_earlgrey/rtl/autogen/top_earlgrey.sv
@@ -42,7 +42,7 @@
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
index 756e4fc..95c5f72 100644
--- a/util/openocd/target/lowrisc-earlgrey.cfg
+++ b/util/openocd/target/lowrisc-earlgrey.cfg
@@ -13,7 +13,7 @@
if { [info exists CPUTAPID ] } {
set _CPUTAPID $CPUTAPID
} else {
- set _CPUTAPID 0x04F5494D
+ set _CPUTAPID 0x04f5484d
}
jtag newtap $_CHIPNAME tap -irlen 5 -expected-id $_CPUTAPID
