From ed42ddad4a09ef6919ac3c1ee54ad17f4e8b13bc Mon Sep 17 00:00:00 2001 From: Alejandro Soto Date: Tue, 1 Nov 2022 23:00:52 -0600 Subject: Add CPUID register --- rtl/core/cp15/cpuid.sv | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 rtl/core/cp15/cpuid.sv (limited to 'rtl/core/cp15/cpuid.sv') diff --git a/rtl/core/cp15/cpuid.sv b/rtl/core/cp15/cpuid.sv new file mode 100644 index 0000000..fd24631 --- /dev/null +++ b/rtl/core/cp15/cpuid.sv @@ -0,0 +1,18 @@ +`include "core/uarch.sv" +`include "core/cp15/map.sv" + +module core_cp15_cpuid +( + output word read +); + + /* If an value corresponding to an unimplemented or + * reserved ID register is encountered, the System Control + * coprocessor returns the value of the main ID register. + * + * ARM810.pdf, p. 104: Reading from CP15 register 0 returns + * the value 0x4101810x. + */ + assign read = 32'h41018100; + +endmodule -- cgit v1.2.3