[people/ms/u-boot.git] / drivers / net / vsc7385.c

/*
 * 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 <console.h>
#include <asm/io.h>
#include <linux/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;
}
Commit	Line	Data
b55d98c6 TT	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>
b55d98c6	16	#include <common.h>
24b852a7	17	#include <console.h>
b55d98c6	18	#include <asm/io.h>
1221ce45	19	#include <linux/errno.h>
960d70c6	20	#include "vsc7385.h"
b55d98c6 TT	21
	22	/*
	23	* Upload a Vitesse VSC7385 firmware image to the hardware
	24	*
	25	* This function takes a pointer to a VSC7385 firmware image and a size, and
	26	* uploads that firmware to the VSC7385.
	27	*
	28	* This firmware is typically located at a board-specific flash address,
	29	* and the size is typically 8KB.
	30	*
	31	* The firmware is Vitesse proprietary.
	32	*
	33	* Further details on the register information can be obtained from Vitesse.
	34	*/
	35	int vsc7385_upload_firmware(void *firmware, unsigned int size)
	36	{
	37	u8 *fw = firmware;
	38	unsigned int i;
	39
6d0f6bcf JCPV	40	u32 gloreset = (u32 ) (CONFIG_SYS_VSC7385_BASE + 0x1c050);
	41	u32 icpu_ctrl = (u32 ) (CONFIG_SYS_VSC7385_BASE + 0x1c040);
	42	u32 icpu_addr = (u32 ) (CONFIG_SYS_VSC7385_BASE + 0x1c044);
	43	u32 icpu_data = (u32 ) (CONFIG_SYS_VSC7385_BASE + 0x1c048);
	44	u32 icpu_rom_map = (u32 ) (CONFIG_SYS_VSC7385_BASE + 0x1c070);
b55d98c6	45	#ifdef DEBUG
6d0f6bcf	46	u32 chipid = (u32 ) (CONFIG_SYS_VSC7385_BASE + 0x1c060);
b55d98c6 TT	47	#endif
	48
	49	out_be32(gloreset, 3);
	50	udelay(200);
	51
	52	out_be32(icpu_ctrl, 0x8E);
	53	udelay(20);
	54
	55	out_be32(icpu_rom_map, 1);
	56	udelay(20);
	57
438a4c11	58	/* Write the firmware to I-RAM */
b55d98c6 TT	59	out_be32(icpu_addr, 0);
	60	udelay(20);
	61
	62	for (i = 0; i < size; i++) {
	63	out_be32(icpu_data, fw[i]);
	64	udelay(20);
	65	if (ctrlc())
	66	return -EINTR;
	67	}
	68
	69	/* Read back and compare */
	70	out_be32(icpu_addr, 0);
	71	udelay(20);
	72
	73	for (i = 0; i < size; i++) {
	74	u8 value;
	75
	76	value = (u8) in_be32(icpu_data);
	77	udelay(20);
	78	if (value != fw[i]) {
	79	debug("VSC7385: Upload mismatch: address 0x%x, "
438a4c11 WD	80	"read value 0x%x, image value 0x%x\n",
438a4c11 WD	81	i, value, fw[i]);
b55d98c6 TT	82
	83	return -EIO;
	84	}
	85	if (ctrlc())
	86	break;
	87	}
	88
	89	out_be32(icpu_ctrl, 0x0B);
	90	udelay(20);
	91
	92	#ifdef DEBUG
	93	printf("VSC7385: Chip ID is %08x\n", in_be32(chipid));
	94	udelay(20);
	95	#endif
	96
	97	return 0;
	98	}