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-rw-r--r--bootrom/demo/Makefile5
-rw-r--r--bootrom/demo/demo.S71
-rw-r--r--bootrom/demo/hello_msg.txt37
3 files changed, 0 insertions, 113 deletions
diff --git a/bootrom/demo/Makefile b/bootrom/demo/Makefile
deleted file mode 100644
index dfe3663..0000000
--- a/bootrom/demo/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-PROG := demo
-SRCS := demo.S
-EXTRAS := hello_msg.txt
-
-include ../bram.mk
diff --git a/bootrom/demo/demo.S b/bootrom/demo/demo.S
deleted file mode 100644
index c6f2618..0000000
--- a/bootrom/demo/demo.S
+++ /dev/null
@@ -1,71 +0,0 @@
-#define UART_BASE 0x48000000
-#define SPI_BASE 0x48001000
-#define GPIO_BASE 0x48002000
-
-#ifndef CFG_STRING
-#error Must define CFG_STRING
-#endif
-
- .globl _start
-_start:
- j uart_init
- nop
- nop
- .word cfgstr
-
-uart_init:
- // a1 = UART_TX
- // a2 = hello_msg_end
- // for (a0 = hello_msg_start; a0 != a2; ++ a0){
- // while (a3 = TX_READY == 0);
- // a3 = *a0
- // *a1 = a3
- // }
-
- la a0, hello_msg_start
- la a2, hello_msg_end
- li a1, UART_BASE
-
-uart_loop:
- lw a3, 4(a1) // Wait until non-zero (uart can send data).
- beqz a3, uart_loop
-
- lb a3, 0(a0) // read the next character in hello_msg
- sw a3, 0(a1) // Write the current character.
- addi a0, a0, 1 // increment the pointer.
- bne a0, a2, uart_loop
-
-gpio_init:
- li a0, GPIO_BASE
- li t0, 0xFFFF0000
- sw t0, 4(a0)
-
-gpio_loop:
- // For Red LEDs, increment manually.
- li t0, 0x1
- sw t0, (a0)
- li t0, 0x2
- sw t0, (a0)
- li t0, 0x4
- sw t0, (a0)
- li t0, 0x8
- sw t0, (a0)
-
- // For Blue and Green LEDs, sample the switches & buttons
-
- lw t0, (a0)
- srli t0, t0, 16
- andi t0, t0, 0xFF
- slli t0, t0, 4
- sw t0, (a0)
-
- j gpio_loop
-
- .section .rodata
-
-hello_msg_start:
- .incbin "hello_msg.txt"
-hello_msg_end:
-
-cfgstr:
- .incbin CFG_STRING
diff --git a/bootrom/demo/hello_msg.txt b/bootrom/demo/hello_msg.txt
deleted file mode 100644
index c3cb3f2..0000000
--- a/bootrom/demo/hello_msg.txt
+++ /dev/null
@@ -1,37 +0,0 @@
-
- SIFIVE, INC.
-
- 5555555555555555555555555
- 5555 5555
- 5555 5555
- 5555 5555
- 5555 5555555555555555555555
- 5555 555555555555555555555555
- 5555 5555
- 5555 5555
- 5555 5555
-5555555555555555555555555555 55555
- 55555 555555555 55555
- 55555 55555 55555
- 55555 5 55555
- 55555 55555
- 55555 55555
- 55555 55555
- 55555 55555
- 55555 55555
- 555555555
- 55555
- 5
-
- SiFive RISC-V Coreplex
-
-Welcome to the Arty FPGA Freedom E Dev Kit.
-The red LEDs are blinking very fast and appear
-dim. Try pressing the buttons and switches to control
-the blue and green LEDs. You can try using the
-debugger to step through the boot code.
-
-
-
-
-