diff options
Diffstat (limited to 'drivers/staging/gdm72xx/sdio_boot.c')
| -rw-r--r-- | drivers/staging/gdm72xx/sdio_boot.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/drivers/staging/gdm72xx/sdio_boot.c b/drivers/staging/gdm72xx/sdio_boot.c deleted file mode 100644 index ba94b5f13bb2..000000000000 --- a/drivers/staging/gdm72xx/sdio_boot.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/uaccess.h> -#include <linux/fs.h> -#include <linux/sched.h> -#include <linux/slab.h> - -#include <linux/mmc/core.h> -#include <linux/mmc/card.h> -#include <linux/mmc/sdio_func.h> - -#include <linux/firmware.h> - -#include "gdm_sdio.h" -#include "sdio_boot.h" - -#define TYPE_A_HEADER_SIZE 4 -#define TYPE_A_LOOKAHEAD_SIZE 16 -#define YMEM0_SIZE 0x8000 /* 32kbytes */ -#define DOWNLOAD_SIZE (YMEM0_SIZE - TYPE_A_HEADER_SIZE) - -#define FW_DIR "gdm72xx/" -#define FW_KRN "gdmskrn.bin" -#define FW_RFS "gdmsrfs.bin" - -static u8 *tx_buf; - -static int ack_ready(struct sdio_func *func) -{ - unsigned long wait = jiffies + HZ; - u8 val; - int ret; - - while (time_before(jiffies, wait)) { - val = sdio_readb(func, 0x13, &ret); - if (val & 0x01) - return 1; - schedule(); - } - - return 0; -} - -static int download_image(struct sdio_func *func, const char *img_name) -{ - int ret = 0, len, pno; - u8 *buf = tx_buf; - loff_t pos = 0; - int img_len; - const struct firmware *firm; - - ret = request_firmware(&firm, img_name, &func->dev); - if (ret < 0) { - dev_err(&func->dev, - "requesting firmware %s failed with error %d\n", - img_name, ret); - return ret; - } - - buf = kmalloc(DOWNLOAD_SIZE + TYPE_A_HEADER_SIZE, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - img_len = firm->size; - - if (img_len <= 0) { - ret = -1; - goto out; - } - - pno = 0; - while (img_len > 0) { - if (img_len > DOWNLOAD_SIZE) { - len = DOWNLOAD_SIZE; - buf[3] = 0; - } else { - len = img_len; /* the last packet */ - buf[3] = 2; - } - - buf[0] = len & 0xff; - buf[1] = (len >> 8) & 0xff; - buf[2] = (len >> 16) & 0xff; - - memcpy(buf+TYPE_A_HEADER_SIZE, firm->data + pos, len); - ret = sdio_memcpy_toio(func, 0, buf, len + TYPE_A_HEADER_SIZE); - if (ret < 0) { - dev_err(&func->dev, - "send image error: packet number = %d ret = %d\n", - pno, ret); - goto out; - } - - if (buf[3] == 2) /* The last packet */ - break; - if (!ack_ready(func)) { - ret = -EIO; - dev_err(&func->dev, "Ack is not ready.\n"); - goto out; - } - ret = sdio_memcpy_fromio(func, buf, 0, TYPE_A_LOOKAHEAD_SIZE); - if (ret < 0) { - dev_err(&func->dev, - "receive ack error: packet number = %d ret = %d\n", - pno, ret); - goto out; - } - sdio_writeb(func, 0x01, 0x13, &ret); - sdio_writeb(func, 0x00, 0x10, &ret); /* PCRRT */ - - img_len -= DOWNLOAD_SIZE; - pos += DOWNLOAD_SIZE; - pno++; - } - -out: - kfree(buf); - return ret; -} - -int sdio_boot(struct sdio_func *func) -{ - int ret; - const char *krn_name = FW_DIR FW_KRN; - const char *rfs_name = FW_DIR FW_RFS; - - tx_buf = kmalloc(YMEM0_SIZE, GFP_KERNEL); - if (!tx_buf) - return -ENOMEM; - - ret = download_image(func, krn_name); - if (ret) - goto restore_fs; - dev_info(&func->dev, "GCT: Kernel download success.\n"); - - ret = download_image(func, rfs_name); - if (ret) - goto restore_fs; - dev_info(&func->dev, "GCT: Filesystem download success.\n"); - -restore_fs: - kfree(tx_buf); - return ret; -} |