Commit 5cbed982 authored by Ben Hutchings's avatar Ben Hutchings

dvb-ttpci: Add source code and makefile

Downstream commercial distributors need to distribute the source code
as well as the binary.
Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
parent 25145003
......@@ -1094,10 +1094,12 @@ Licence: Redistributable. See LICENCE.phanfw for details.
Driver: dvb-ttpci -- AV7110 cards
File: av7110/bootcode.bin
Source: av7110/Boot.S
Source: av7110/Makefile
Licence: GPLv2 or later
ARM assembly source code available at http://www.linuxtv.org/downloads/firmware/Boot.S
ARM assembly source code from http://www.linuxtv.org/downloads/firmware/Boot.S
--------------------------------------------------------------------------
......
/*
Boot.S: boot loader for Siemens DVB-S card
Copyright (C) 2001 Convergence integrated media GmbH
Written by Ralph Metzler
<rjkm@convergence.de>
Copyright (C) 2006 Matthieu CASTET <castet.mattheiu@free.fr>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
check AV711x_3_1.pdf for some hardware infos
build it with :
$ cc -mbig-endian -c Boot.S
$ ld -Ttext 0x2c000000 -EB -o Boot Boot.o
$ objcopy -Obinary Boot
*/
.text
.align
.globl _start
_start:
b reset // reset vector
movs pc, r14 // undefined
subs pc, r14, #4 // SWI
subs pc, r14, #4 // prefetch abort
subs pc, r14, #8 // data abort
subs pc, r14, #4 // reserved
subs pc, r14, #4 // IRQ
subs pc, r14, #4 // FIQ
.word tbl // table needed by firmware ROM
tbl: .word (endtbl - tbl)
.word 0
.word conf
endtbl: .word 0
conf: .word 0xa5a55a5a
.word 0x001f1555
.word 0x00000009
reset: ldr r13, buffer
ldr r4, flag
mov r0, #0
str r0, [r4]
str r0, [r4, #4]
ldr r1, wait_address
ldr r2, flag_address
ldr r3, sram
copycode: // copy the code HW Sram
ldmia r1!, {r5-r12}
stmia r3!, {r5-r12}
cmp r1, r2
ble copycode
ldr pc, sram // jump to the copied code
wait: ldrh r1, [r4] // wait for flag!=0
cmp r1, #0
beq wait
mov r1, r13 // buffer address
ldr r3, [r4,#4] // destaddr
ldrh r2, [r4,#2] // get segment length
add r2, r2, #63 // round length to next 64 bytes
movs r2, r2, lsr #6 // and divide by 64
moveq r0, #2 // if 0, set flag to 2, else signal
strh r0, [r4] // that buffer is accepted by setting to 0
beq wait
copyloop:
ldmia r1!, {r5-r12}
stmia r3!, {r5-r12}
ldmia r1!, {r5-r12}
stmia r3!, {r5-r12}
subs r2, r2, #1
bne copyloop
eor r13, r13, #0x1400 // switch to other buffer
b wait
// flag is stored at 0x2c0003f8, length at 0x2c0003fa,
// destaddr at 0x2c0003fc
flag: .word 0x2c0003f8
// buffer 1 is at 0x2c000400, buffer 2 at 0x2c001000
buffer: .word 0x2c000400
sram: .word 0x9e000800
wait_address: .word wait
flag_address: .word flag
CC = arm-linux-gnueabi-gcc
LD = arm-linux-gnueabi-ld
OBJCOPY = arm-linux-gnueabi-objcopy
bootcode.bin: Boot.S
$(CC) -mbig-endian -c Boot.S
$(LD) -Ttext 0x2c000000 -EB -o Boot Boot.o
$(OBJCOPY) -Obinary Boot bootcode.bin
clean:
rm -f Boot.o Boot bootcode.bin
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