1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Vitesse 7385 Switch Firmware Upload
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Author: Timur Tabi <timur@freescale.com>
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Copyright 2008 Freescale Semiconductor, Inc. This file is licensed
7*4882a593Smuzhiyun * under the terms of the GNU General Public License version 2. This
8*4882a593Smuzhiyun * program is licensed "as is" without any warranty of any kind, whether
9*4882a593Smuzhiyun * express or implied.
10*4882a593Smuzhiyun *
11*4882a593Smuzhiyun * This module uploads proprietary firmware for the Vitesse VSC7385 5-port
12*4882a593Smuzhiyun * switch.
13*4882a593Smuzhiyun */
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include <config.h>
16*4882a593Smuzhiyun #include <common.h>
17*4882a593Smuzhiyun #include <console.h>
18*4882a593Smuzhiyun #include <asm/io.h>
19*4882a593Smuzhiyun #include <linux/errno.h>
20*4882a593Smuzhiyun #include "vsc7385.h"
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun /*
23*4882a593Smuzhiyun * Upload a Vitesse VSC7385 firmware image to the hardware
24*4882a593Smuzhiyun *
25*4882a593Smuzhiyun * This function takes a pointer to a VSC7385 firmware image and a size, and
26*4882a593Smuzhiyun * uploads that firmware to the VSC7385.
27*4882a593Smuzhiyun *
28*4882a593Smuzhiyun * This firmware is typically located at a board-specific flash address,
29*4882a593Smuzhiyun * and the size is typically 8KB.
30*4882a593Smuzhiyun *
31*4882a593Smuzhiyun * The firmware is Vitesse proprietary.
32*4882a593Smuzhiyun *
33*4882a593Smuzhiyun * Further details on the register information can be obtained from Vitesse.
34*4882a593Smuzhiyun */
vsc7385_upload_firmware(void * firmware,unsigned int size)35*4882a593Smuzhiyun int vsc7385_upload_firmware(void *firmware, unsigned int size)
36*4882a593Smuzhiyun {
37*4882a593Smuzhiyun u8 *fw = firmware;
38*4882a593Smuzhiyun unsigned int i;
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun u32 *gloreset = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c050);
41*4882a593Smuzhiyun u32 *icpu_ctrl = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c040);
42*4882a593Smuzhiyun u32 *icpu_addr = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c044);
43*4882a593Smuzhiyun u32 *icpu_data = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c048);
44*4882a593Smuzhiyun u32 *icpu_rom_map = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c070);
45*4882a593Smuzhiyun #ifdef DEBUG
46*4882a593Smuzhiyun u32 *chipid = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c060);
47*4882a593Smuzhiyun #endif
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun out_be32(gloreset, 3);
50*4882a593Smuzhiyun udelay(200);
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun out_be32(icpu_ctrl, 0x8E);
53*4882a593Smuzhiyun udelay(20);
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun out_be32(icpu_rom_map, 1);
56*4882a593Smuzhiyun udelay(20);
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun /* Write the firmware to I-RAM */
59*4882a593Smuzhiyun out_be32(icpu_addr, 0);
60*4882a593Smuzhiyun udelay(20);
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun for (i = 0; i < size; i++) {
63*4882a593Smuzhiyun out_be32(icpu_data, fw[i]);
64*4882a593Smuzhiyun udelay(20);
65*4882a593Smuzhiyun if (ctrlc())
66*4882a593Smuzhiyun return -EINTR;
67*4882a593Smuzhiyun }
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun /* Read back and compare */
70*4882a593Smuzhiyun out_be32(icpu_addr, 0);
71*4882a593Smuzhiyun udelay(20);
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun for (i = 0; i < size; i++) {
74*4882a593Smuzhiyun u8 value;
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun value = (u8) in_be32(icpu_data);
77*4882a593Smuzhiyun udelay(20);
78*4882a593Smuzhiyun if (value != fw[i]) {
79*4882a593Smuzhiyun debug("VSC7385: Upload mismatch: address 0x%x, "
80*4882a593Smuzhiyun "read value 0x%x, image value 0x%x\n",
81*4882a593Smuzhiyun i, value, fw[i]);
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun return -EIO;
84*4882a593Smuzhiyun }
85*4882a593Smuzhiyun if (ctrlc())
86*4882a593Smuzhiyun break;
87*4882a593Smuzhiyun }
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun out_be32(icpu_ctrl, 0x0B);
90*4882a593Smuzhiyun udelay(20);
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun #ifdef DEBUG
93*4882a593Smuzhiyun printf("VSC7385: Chip ID is %08x\n", in_be32(chipid));
94*4882a593Smuzhiyun udelay(20);
95*4882a593Smuzhiyun #endif
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun return 0;
98*4882a593Smuzhiyun }
99