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dsp56k: use request_firmware
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Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Jaswinder Singh authored and David Woodhouse committed Jul 14, 2008
1 parent d12b219 commit 7f127d5
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Showing 5 changed files with 170 additions and 51 deletions.
84 changes: 33 additions & 51 deletions drivers/char/dsp56k.c
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,8 @@
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/platform_device.h>

#include <asm/atarihw.h>
#include <asm/traps.h>
Expand Down Expand Up @@ -92,49 +94,6 @@
} \
}

/* DSP56001 bootstrap code */
static char bootstrap[] = {
0x0c, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x60, 0xf4, 0x00, 0x00, 0x00, 0x4f, 0x61, 0xf4,
0x00, 0x00, 0x7e, 0xa9, 0x06, 0x2e, 0x80, 0x00, 0x00, 0x47,
0x07, 0xd8, 0x84, 0x07, 0x59, 0x84, 0x08, 0xf4, 0xa8, 0x00,
0x00, 0x04, 0x08, 0xf4, 0xbf, 0x00, 0x0c, 0x00, 0x00, 0xfe,
0xb8, 0x0a, 0xf0, 0x80, 0x00, 0x7e, 0xa9, 0x08, 0xf4, 0xa0,
0x00, 0x00, 0x01, 0x08, 0xf4, 0xbe, 0x00, 0x00, 0x00, 0x0a,
0xa9, 0x80, 0x00, 0x7e, 0xad, 0x08, 0x4e, 0x2b, 0x44, 0xf4,
0x00, 0x00, 0x00, 0x03, 0x44, 0xf4, 0x45, 0x00, 0x00, 0x01,
0x0e, 0xa0, 0x00, 0x0a, 0xa9, 0x80, 0x00, 0x7e, 0xb5, 0x08,
0x50, 0x2b, 0x0a, 0xa9, 0x80, 0x00, 0x7e, 0xb8, 0x08, 0x46,
0x2b, 0x44, 0xf4, 0x45, 0x00, 0x00, 0x02, 0x0a, 0xf0, 0xaa,
0x00, 0x7e, 0xc9, 0x20, 0x00, 0x45, 0x0a, 0xf0, 0xaa, 0x00,
0x7e, 0xd0, 0x06, 0xc6, 0x00, 0x00, 0x7e, 0xc6, 0x0a, 0xa9,
0x80, 0x00, 0x7e, 0xc4, 0x08, 0x58, 0x6b, 0x0a, 0xf0, 0x80,
0x00, 0x7e, 0xad, 0x06, 0xc6, 0x00, 0x00, 0x7e, 0xcd, 0x0a,
0xa9, 0x80, 0x00, 0x7e, 0xcb, 0x08, 0x58, 0xab, 0x0a, 0xf0,
0x80, 0x00, 0x7e, 0xad, 0x06, 0xc6, 0x00, 0x00, 0x7e, 0xd4,
0x0a, 0xa9, 0x80, 0x00, 0x7e, 0xd2, 0x08, 0x58, 0xeb, 0x0a,
0xf0, 0x80, 0x00, 0x7e, 0xad};
static int sizeof_bootstrap = 375;


static struct dsp56k_device {
unsigned long in_use;
long maxio, timeout;
Expand Down Expand Up @@ -164,18 +123,40 @@ static int dsp56k_reset(void)

static int dsp56k_upload(u_char __user *bin, int len)
{
struct platform_device *pdev;
const struct firmware *fw;
const char fw_name[] = "dsp56k/bootstrap.bin";
int err;
int i;
u_char *p;


dsp56k_reset();

p = bootstrap;
for (i = 0; i < sizeof_bootstrap/3; i++) {

pdev = platform_device_register_simple("dsp56k", 0, NULL, 0);
if (IS_ERR(pdev)) {
printk(KERN_ERR "Failed to register device for \"%s\"\n",
fw_name);
return -EINVAL;
}
err = request_firmware(&fw, fw_name, &pdev->dev);
platform_device_unregister(pdev);
if (err) {
printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
fw_name, err);
return err;
}
if (fw->size % 3) {
printk(KERN_ERR "Bogus length %d in image \"%s\"\n",
fw->size, fw_name);
release_firmware(fw);
return -EINVAL;
}
for (i = 0; i < fw->size; i = i + 3) {
/* tx_wait(10); */
dsp56k_host_interface.data.b[1] = *p++;
dsp56k_host_interface.data.b[2] = *p++;
dsp56k_host_interface.data.b[3] = *p++;
dsp56k_host_interface.data.b[1] = fw->data[i];
dsp56k_host_interface.data.b[2] = fw->data[i + 1];
dsp56k_host_interface.data.b[3] = fw->data[i + 2];
}
release_firmware(fw);
for (; i < 512; i++) {
/* tx_wait(10); */
dsp56k_host_interface.data.b[1] = 0;
Expand Down Expand Up @@ -534,3 +515,4 @@ static void __exit dsp56k_cleanup_driver(void)
module_exit(dsp56k_cleanup_driver);

MODULE_LICENSE("GPL");
MODULE_FIRMWARE("dsp56k/bootstrap.bin");
1 change: 1 addition & 0 deletions firmware/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ fw-external-y := $(subst ",,$(CONFIG_EXTRA_FIRMWARE))
# accurate. In the latter case it doesn't matter -- it'll use $(fw-shipped-all).
# But be aware that the config file might not be included at all.

fw-shipped-$(CONFIG_ATARI_DSP56K) += dsp56k/bootstrap.bin
fw-shipped-$(CONFIG_ATM_AMBASSADOR) += atmsar11.fw
fw-shipped-$(CONFIG_COMPUTONE) += intelliport2.bin
fw-shipped-$(CONFIG_DVB_TTUSB_BUDGET) += ttusb-budget/dspbootcode.bin
Expand Down
12 changes: 12 additions & 0 deletions firmware/WHENCE
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Original file line number Diff line number Diff line change
Expand Up @@ -309,3 +309,15 @@ Licence:
Found in hex form in kernel source.

--------------------------------------------------------------------------

Driver: ATARI_DSP56K - Atari DSP56k support

File: dsp56k/bootstrap.bin
Source: dsp56k/bootstrap.asm

Licence: GPLv2 or later

DSP56001 assembler, possibly buildable with a56 from
http://www.zdomain.com/a56.html

--------------------------------------------------------------------------
98 changes: 98 additions & 0 deletions firmware/dsp56k/bootstrap.asm
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Original file line number Diff line number Diff line change
@@ -0,0 +1,98 @@
; Author: Frederik Noring <noring@nocrew.org>
;
; This file is subject to the terms and conditions of the GNU General Public
; License. See the file COPYING in the main directory of this archive
; for more details.

; DSP56k loader

; Host Interface
M_BCR EQU $FFFE ; Port A Bus Control Register
M_PBC EQU $FFE0 ; Port B Control Register
M_PBDDR EQU $FFE2 ; Port B Data Direction Register
M_PBD EQU $FFE4 ; Port B Data Register
M_PCC EQU $FFE1 ; Port C Control Register
M_PCDDR EQU $FFE3 ; Port C Data Direction Register
M_PCD EQU $FFE5 ; Port C Data Register

M_HCR EQU $FFE8 ; Host Control Register
M_HSR EQU $FFE9 ; Host Status Register
M_HRX EQU $FFEB ; Host Receive Data Register
M_HTX EQU $FFEB ; Host Transmit Data Register

; SSI, Synchronous Serial Interface
M_RX EQU $FFEF ; Serial Receive Data Register
M_TX EQU $FFEF ; Serial Transmit Data Register
M_CRA EQU $FFEC ; SSI Control Register A
M_CRB EQU $FFED ; SSI Control Register B
M_SR EQU $FFEE ; SSI Status Register
M_TSR EQU $FFEE ; SSI Time Slot Register

; Exception Processing
M_IPR EQU $FFFF ; Interrupt Priority Register

org P:$0
start jmp <$40

org P:$40
; ; Zero 16384 DSP X and Y words
; clr A #0,r0
; clr B #0,r4
; do #64,<_block1
; rep #256
; move A,X:(r0)+ B,Y:(r4)+
;_block1 ; Zero (32768-512) Program words
; clr A #512,r0
; do #126,<_block2
; rep #256
; move A,P:(r0)+
;_block2

; Copy DSP program control
move #real,r0
move #upload,r1
do #upload_end-upload,<_copy
move P:(r0)+,x0
move x0,P:(r1)+
_copy movep #>4,X:<<M_HCR
movep #>$c00,X:<<M_IPR
and #<$fe,mr
jmp upload

real
org P:$7ea9
upload
movep #>1,X:<<M_PBC
movep #>0,X:<<M_BCR

next jclr #0,X:<<M_HSR,*
movep X:<<M_HRX,A
move #>3,x0
cmp x0,A #>1,x0
jeq <$0
_get_address
jclr #0,X:<<M_HSR,_get_address
movep X:<<M_HRX,r0
_get_length
jclr #0,X:<<M_HSR,_get_length
movep X:<<M_HRX,y0
cmp x0,A #>2,x0
jeq load_X
cmp x0,A
jeq load_Y

load_P do y0,_load
jclr #0,X:<<M_HSR,*
movep X:<<M_HRX,P:(r0)+
_load jmp next
load_X do y0,_load
jclr #0,X:<<M_HSR,*
movep X:<<M_HRX,X:(r0)+
_load jmp next
load_Y do y0,_load
jclr #0,X:<<M_HSR,*
movep X:<<M_HRX,Y:(r0)+
_load jmp next

upload_end
end
26 changes: 26 additions & 0 deletions firmware/dsp56k/bootstrap.bin.ihex
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Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
:100000000C004000000000000000000000000000A4
:1000100000000000000000000000000000000000E0
:1000200000000000000000000000000000000000D0
:1000300000000000000000000000000000000000C0
:1000400000000000000000000000000000000000B0
:1000500000000000000000000000000000000000A0
:100060000000000000000000000000000000000090
:100070000000000000000000000000000000000080
:100080000000000000000000000000000000000070
:100090000000000000000000000000000000000060
:1000A0000000000000000000000000000000000050
:1000B0000000000000000000000000000000000040
:1000C00060F40000004F61F400007EA9062E80005D
:1000D000004707D88407598408F4A800000408F4EE
:1000E000BF000C0000FEB80AF080007EA908F4A052
:1000F00000000108F4BE0000000AA980007EAD08DF
:100100004E2B44F40000000344F4450000010EA00F
:10011000000AA980007EB508502B0AA980007EB88D
:1001200008462B44F4450000020AF0AA007EC920CC
:1001300000450AF0AA007ED006C600007EC60AA9C5
:1001400080007EC408586B0AF080007EAD06C600B1
:10015000007ECD0AA980007ECB0858AB0AF0800053
:100160007EAD06C600007ED40AA980007ED2085863
:07017000EB0AF080007EADF8
:00000001FF
/* DSP56001 bootstrap code */

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