vsc7385.c
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/*
* Vitesse 7385 Switch Firmware Upload
*
* Author: Timur Tabi <timur@freescale.com>
*
* Copyright 2008 Freescale Semiconductor, Inc. This file is licensed
* under the terms of the GNU General Public License version 2. This
* program is licensed "as is" without any warranty of any kind, whether
* express or implied.
*
* This module uploads proprietary firmware for the Vitesse VSC7385 5-port
* switch.
*/
#include <config.h>
#include <common.h>
#include <asm/io.h>
#include <asm/errno.h>
#include "vsc7385.h"
/*
* Upload a Vitesse VSC7385 firmware image to the hardware
*
* This function takes a pointer to a VSC7385 firmware image and a size, and
* uploads that firmware to the VSC7385.
*
* This firmware is typically located at a board-specific flash address,
* and the size is typically 8KB.
*
* The firmware is Vitesse proprietary.
*
* Further details on the register information can be obtained from Vitesse.
*/
int vsc7385_upload_firmware(void *firmware, unsigned int size)
{
u8 *fw = firmware;
unsigned int i;
u32 *gloreset = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c050);
u32 *icpu_ctrl = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c040);
u32 *icpu_addr = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c044);
u32 *icpu_data = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c048);
u32 *icpu_rom_map = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c070);
#ifdef DEBUG
u32 *chipid = (u32 *) (CONFIG_SYS_VSC7385_BASE + 0x1c060);
#endif
out_be32(gloreset, 3);
udelay(200);
out_be32(icpu_ctrl, 0x8E);
udelay(20);
out_be32(icpu_rom_map, 1);
udelay(20);
/* Write the firmware to I-RAM */
out_be32(icpu_addr, 0);
udelay(20);
for (i = 0; i < size; i++) {
out_be32(icpu_data, fw[i]);
udelay(20);
if (ctrlc())
return -EINTR;
}
/* Read back and compare */
out_be32(icpu_addr, 0);
udelay(20);
for (i = 0; i < size; i++) {
u8 value;
value = (u8) in_be32(icpu_data);
udelay(20);
if (value != fw[i]) {
debug("VSC7385: Upload mismatch: address 0x%x, "
"read value 0x%x, image value 0x%x\n",
i, value, fw[i]);
return -EIO;
}
if (ctrlc())
break;
}
out_be32(icpu_ctrl, 0x0B);
udelay(20);
#ifdef DEBUG
printf("VSC7385: Chip ID is %08x\n", in_be32(chipid));
udelay(20);
#endif
return 0;
}