From 98dd53d47b03b8263b98ac2806c354f5b018acd2 Mon Sep 17 00:00:00 2001
From: Alejandro Soto <alejandro@34project.org>
Date: Sat, 25 May 2024 12:34:44 -0600
Subject: rtl/gfx/firmware: rename gfx_bootrom.S -> bootrom.S

---
 rtl/gfx/firmware/gfx_bootrom.S | 76 ------------------------------------------
 1 file changed, 76 deletions(-)
 delete mode 100644 rtl/gfx/firmware/gfx_bootrom.S

(limited to 'rtl/gfx/firmware/gfx_bootrom.S')

diff --git a/rtl/gfx/firmware/gfx_bootrom.S b/rtl/gfx/firmware/gfx_bootrom.S
deleted file mode 100644
index 9079e31..0000000
--- a/rtl/gfx/firmware/gfx_bootrom.S
+++ /dev/null
@@ -1,76 +0,0 @@
-#include "custom_ops.S"
-
-.text
-
-.global _start
-_start:
-
-	li   a0, 0x00300000       # HOST_CTRL_BASE
-	li   a1, 1 << 1 | 1 << 0  # ARINT | AWINT
-	li   a2, 1 << 0           # B.VALID = 1
-	li   a3, 0x8              # Firmware handover word
-	la   a4, .read_data
-	li   a5, 1 << 11 | 1 << 9 # CTRL.WVALID | CTRL.AWVALID
-	li   a6, 1 << 12          # CTRL.BDONE, doesn't fit in andi
-
-	sw   a1, 0(a0)
-
-.wait_axi:
-	picorv32_waitirq_insn(zero)
-
-	lw   t0, 0(a0)
-	andi t1, t0, 1 << 8 # ARVALID
-	bne  t1, zero, .read
-	and  t0, t0, a5
-	beq  t0, a5, .write
-	j    .wait_axi
-
-.read:
-	lw   t0, 4(a0)
-	andi t1, t0, 1 << 0 # AW.VALID
-	beq  t1, zero, .wait_axi
-	andi t0, t0, 0b11 << 2
-	add  t0, a4, t0
-	lw   t0, 0(t0)
-	sw   t0, 12(a0) # R.DATA
-
-.read_done:
-	lw   t0, 0(a0)
-	andi t0, t0, 1 << 10 # CTRL.RDONE
-	beq  t0, zero, .read_done
-	j    .wait_axi
-
-.write:
-	lw   t0, 8(a0)
-	andi t1, t0, 1 << 0 # AW.VALID
-	beq  t1, zero, .wait_axi
-	lw   t1, 16(a0)
-	sw   a2, 20(a0)
-
-.write_done:
-	lw   t2, 0(a0)
-	and  t2, t2, a6
-	beq  t2, zero, .write_done
-
-	andi t0, t0, 0b111100 # Entendemos words 0-15
-	bne  t0, a3, .wait_axi
-	sw   zero, 0(a0)
-	# Pass magic & hardware version
-	lw   a0, 0(a4)
-	lw   a1, 4(a4)
-	jalr t1
-	j    .
-
-.balign 4
-
-.read_data:
-	# Magic
-	.word 0x4a7a7b0c
-	# Hardware major.minor.patch
-	.word 1 << 16 | 0 << 8 | 0 << 0
-	# Firmware yyyy.mm.dd.build
-	.word 2024 << 19 | 5 << 15 | 12 << 10 | 1 << 0
-	# Register map version, rev 0 means this is the bootrom firmware
-	.word 0
-
-.balign 4
-- 
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