Git-Mirrors/tillitis-key
1
0
Fork 0
mirror of https://github.com/tillitis/tillitis-key1.git synced 2024-10-01 01:45:38 -04:00
Code Issues Packages Projects Releases Wiki Activity

(fpga) Add API register for syscall trampoline address.

Browse Source 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
This commit is contained in:
Joachim Strömbergson 2024-08-28 14:17:31 +02:00
parent 5e8a0055ed
commit df10908e96
No known key found for this signature in database
GPG Key ID: 865B8A548EA61679
1 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
hw/application_fpga/core/tk1/rtl/tk1.v
View File

@ -80,6 +80,7 @@ module tk1(
localparam ADDR_APP_SIZE = 8'h0d;
localparam ADDR_BLAKE2S = 8'h10;
localparam ADDR_SYSCALL = 8'h12;
localparam ADDR_CDI_FIRST = 8'h20;
localparam ADDR_CDI_LAST = 8'h27;
@ -143,6 +144,9 @@ module tk1(
reg [31 : 0] blake2s_addr_reg;
reg blake2s_addr_we;
reg [31 : 0] syscall_addr_reg;
reg syscall_addr_we;
reg [23 : 0] cpu_trap_ctr_reg;
reg [23 : 0] cpu_trap_ctr_new;
reg [2 : 0] cpu_trap_led_reg;
@ -283,6 +287,7 @@ module tk1(
app_start_reg <= 32'h0;
app_size_reg <= 32'h0;
blake2s_addr_reg <= 32'h0;
syscall_addr_reg <= 32'h0;
cdi_mem[0] <= 32'h0;
cdi_mem[1] <= 32'h0;
cdi_mem[2] <= 32'h0;
@ -354,6 +359,10 @@ module tk1(
blake2s_addr_reg <= write_data;
end
if (syscall_addr_we) begin
syscall_addr_reg <= write_data;
end
if (cdi_mem_we) begin
cdi_mem[address[2 : 0]] <= write_data;
end
@ -568,6 +577,12 @@ module tk1(
end
end
if (address == ADDR_SYSCALL) begin
if (!fw_app_mode_reg) begin
syscall_addr_we = 1'h1;
end
end
if ((address >= ADDR_CDI_FIRST) && (address <= ADDR_CDI_LAST)) begin
if (!fw_app_mode_reg) begin
cdi_mem_we = 1'h1;
@ -663,6 +678,10 @@ module tk1(
tmp_read_data = blake2s_addr_reg;
end
if (address == ADDR_SYSCALL) begin
tmp_read_data = syscall_addr_reg;
end
if ((address >= ADDR_CDI_FIRST) && (address <= ADDR_CDI_LAST)) begin
tmp_read_data = cdi_mem[address[2 : 0]];
end