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-rw-r--r--bootrom/bram.mk79
-rw-r--r--bootrom/common/bram.ld40
-rw-r--r--bootrom/common/mem.awk63
-rw-r--r--bootrom/demo/Makefile5
-rw-r--r--bootrom/demo/demo.S71
-rw-r--r--bootrom/demo/hello_msg.txt37
6 files changed, 0 insertions, 295 deletions
diff --git a/bootrom/bram.mk b/bootrom/bram.mk
deleted file mode 100644
index 2c7875a..0000000
--- a/bootrom/bram.mk
+++ /dev/null
@@ -1,79 +0,0 @@
-ifndef _BRAM_MK
-_BRAM_MK := # defined
-
-BRAM_ADDR := 0x1000
-
-BASEDIR := $(dir $(lastword $(MAKEFILE_LIST)))
-BASEDIR := $(BASEDIR:/=)
-DATADIR := $(BASEDIR)/common
-
-LDSCRIPT := $(DATADIR)/bram.ld
-MEMSCRIPT := $(DATADIR)/mem.awk
-
-BITFILEDIR := $(BASEDIR)/../bitfile
-BITFILE_VERSION ?= 0-1
-
-BITFILE := $(BITFILEDIR)/freedom-e300-arty-$(BITFILE_VERSION).bit
-CFGFILE := $(BITFILEDIR)/FreedomE-$(BITFILE_VERSION).cfg
-MEMINFO := $(BITFILEDIR)/freedom-e300-arty-$(BITFILE_VERSION).mmi
-BRAM_INST := `cat $(BITFILEDIR)/freedom-e300-arty-$(BITFILE_VERSION)-bootrom.txt`
-
-XLEN = 32
-BRAM_WIDTH=64
-
-all: mcs
-
-$(BITFILE):
- @echo "In order to get Version $(BITFILE_VERSION) of the bitfile:"
- @echo ""
- @cat $(BITFILEDIR)/README.md
-
-CC := ../../toolchain/bin/riscv$(XLEN)-unknown-elf-gcc
-UPDATEMEM ?= updatemem
-
-CDEFINES += -DCFG_STRING=\"$(CFGFILE)\"
-
-CFLAGS ?= -m$(XLEN) -O2 -std=c11 -pedantic -Wall \
- -nostartfiles -fno-common -mcmodel=medany -g \
- $(CDEFINES)
-
-LDFLAGS ?= -T$(LDSCRIPT) -static -nostdlib
-OBJCOPY ?= objcopy
-elf: $(PROG).elf
-hex: $(PROG).hex
-mem: $(PROG).impl.mem
-mcs: $(PROG).mcs
-
-$(PROG).elf: $(SRCS) $(EXTRAS) $(CFGFILE)
- $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(SRCS)
-
-$(PROG).hex: $(PROG).elf
- $(OBJCOPY) -S -O verilog --change-addresses -$(BRAM_ADDR) $< $@
-
-# Manually reverse the byte order due to limitations in UpdateMEM.
-# Per UG898: "When UpdateMEM inputs data, it takes data from data input
-# files in Bit Lane sized chunks from the most right value first to the
-# left most. For example, if the first 64 bits of input data are
-# 0xB47DDE02826A8419 then the value 0xB4 is the first value to be set
-# into a Block RAM."
-$(PROG).impl.mem: $(PROG).hex $(MEMSCRIPT)
- awk -v WIDTH=$(BRAM_WIDTH) -v REVERSE=1 -f $(MEMSCRIPT) $< > $@
-
-.PHONY: $(PROG).mcs
-$(PROG).mcs : $(BITFILE) $(PROG).impl.mem
- @echo ""
- @echo ""
- @echo "TO COMPLETE THE BUILD OF $(PROG).mcs, "
- @echo "ENTER THE FOLLOWING IN THE VIVADO TCL WINDOW:"
- @echo ""
- @echo "cd `pwd`"
- @echo ""
- @echo "exec $(UPDATEMEM) -meminfo $(MEMINFO) -data $(PROG).impl.mem -proc $(BRAM_INST) -bit $(BITFILE) --out $(PROG).bit -force"
- @echo ""
- @echo "write_cfgmem -format mcs -interface spix4 -size 16 -loadbit {up 0x0 $(PROG).bit} -file $(PROG).mcs -force"
- @echo ""
-
-clean:
- rm -f -- $(foreach ext,elf hex impl.mem bit mcs,$(PROG).$(ext))
-
-endif # _BRAM_MK
diff --git a/bootrom/common/bram.ld b/bootrom/common/bram.ld
deleted file mode 100644
index 45df67f..0000000
--- a/bootrom/common/bram.ld
+++ /dev/null
@@ -1,40 +0,0 @@
-OUTPUT_ARCH("riscv")
-ENTRY(_start)
-
-MEMORY
-{
- rom (rx) : ORIGIN = 0x00001000, LENGTH = 4K
- ram (rwx) : ORIGIN = 0x80000000, LENGTH = 256M
-}
-
-SECTIONS
-{
- PROVIDE(_rom = ORIGIN(rom));
- PROVIDE(_rom_end = _rom + LENGTH(rom));
- PROVIDE(_ram = ORIGIN(ram));
- PROVIDE(_ram_end = _ram + LENGTH(ram));
-
- .text : {
- PROVIDE(_ftext = .);
- *(.text.init)
- *(.text .text.* .gnu.linkonce.t.*)
- PROVIDE(_etext = .);
- } > rom
-
- .rodata : {
- *(.rodata .rodata.* .gnu.linkonce.r.*)
- } > rom
-
- .bss : ALIGN(8) {
- PROVIDE(_fbss = .);
- *(.bss .bss.* .gnu.linkonce.b.*)
- *(.sbss .sbss.* .gnu.linkonce.sb.*)
- . = ALIGN(8);
- PROVIDE(_ebss = .);
- } > ram
-
- . += 0x1000;
- PROVIDE(_sp = NEXT(0x1000));
-
- PROVIDE(_end = .);
-}
diff --git a/bootrom/common/mem.awk b/bootrom/common/mem.awk
deleted file mode 100644
index 3003b56..0000000
--- a/bootrom/common/mem.awk
+++ /dev/null
@@ -1,63 +0,0 @@
-BEGIN {
- RS = ORS = "\r\n"
- addr = 0
- buf = ""
- limit = (WIDTH > 0 ? WIDTH / 4 : 16)
- print "@00000000"
-}
-
-# Portable strtonum() replacement
-function atoi(str, x, n, i, b, c) {
- if (str ~ /^0[0-7]*$/) {
- i = 2
- b = 8
- } else if (str ~ /^0[xX][[:xdigit:]]+$/) {
- i = 3
- b = 16
- } else {
- return str
- }
-
- x = 0
- n = length(str)
- for (; i <= n; i++) {
- c = tolower(substr(str, i , 1))
- c = index("123456789abcdef", c)
- x = (x * b) + c
- }
- return x
-}
-
-function out(x) {
- addr++
- buf = (REVERSE ? buf x : x buf)
- if (length(buf) >= limit) {
- print buf
- buf = ""
- }
-}
-
-function pad(n) {
- while (addr < n) {
- out("00")
- }
-}
-
-match($1, /^@[[:xdigit:]]+/) {
- pad(atoi("0x" substr($1, RSTART+1, RLENGTH-1)))
- next
-}
-
-{
- for (i = 1; i <= NF; i++) {
- out($i)
- }
-}
-
-END {
- align = limit / 2
- pad(int((addr + align - 1) / align) * align)
- if (length(buf) > 0) {
- print buf;
- }
-}
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.
-
-
-
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 14:27:48 +0000