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