diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
commit | d635711daa98be86d4c7fd01499c34f566b54ccb (patch) | |
tree | aa5cc3760a27c3d57146498cb82fa549547de06c /drivers/staging/gdm72xx/usb_boot.c | |
parent | c91265cd0efb83778f015b4d4b1129bd2cfd075e (diff) |
Linux-libre 4.6.2-gnu
Diffstat (limited to 'drivers/staging/gdm72xx/usb_boot.c')
-rw-r--r-- | drivers/staging/gdm72xx/usb_boot.c | 363 |
1 files changed, 0 insertions, 363 deletions
diff --git a/drivers/staging/gdm72xx/usb_boot.c b/drivers/staging/gdm72xx/usb_boot.c deleted file mode 100644 index 18c7f71af..000000000 --- a/drivers/staging/gdm72xx/usb_boot.c +++ /dev/null @@ -1,363 +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/uaccess.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/usb.h> -#include <linux/unistd.h> -#include <linux/slab.h> -#include <linux/firmware.h> - -#include <asm/byteorder.h> -#include "gdm_usb.h" -#include "usb_boot.h" - -#define DN_KERNEL_MAGIC_NUMBER 0x10760001 -#define DN_ROOTFS_MAGIC_NUMBER 0x10760002 - -#define DOWNLOAD_SIZE 1024 - -#define MAX_IMG_CNT 16 -#define FW_DIR "gdm72xx/" -#define FW_UIMG "/*(DEBLOBBED)*/" -#define FW_KERN "zImage" -#define FW_FS "ramdisk.jffs2" - -struct dn_header { - __be32 magic_num; - __be32 file_size; -}; - -struct img_header { - u32 magic_code; - u32 count; - u32 len; - u32 offset[MAX_IMG_CNT]; - char hostname[32]; - char date[32]; -}; - -struct fw_info { - u32 id; - u32 len; - u32 kernel_len; - u32 rootfs_len; - u32 kernel_offset; - u32 rootfs_offset; - u32 fw_ver; - u32 mac_ver; - char hostname[32]; - char userid[16]; - char date[32]; - char user_desc[128]; -}; - -static void array_le32_to_cpu(u32 *arr, int num) -{ - int i; - - for (i = 0; i < num; i++, arr++) - le32_to_cpus(arr); -} - -static u8 *tx_buf; - -static int gdm_wibro_send(struct usb_device *usbdev, void *data, int len) -{ - int ret; - int actual; - - ret = usb_bulk_msg(usbdev, usb_sndbulkpipe(usbdev, 1), data, len, - &actual, 1000); - - if (ret < 0) { - dev_err(&usbdev->dev, "Error : usb_bulk_msg ( result = %d )\n", - ret); - return ret; - } - return 0; -} - -static int gdm_wibro_recv(struct usb_device *usbdev, void *data, int len) -{ - int ret; - int actual; - - ret = usb_bulk_msg(usbdev, usb_rcvbulkpipe(usbdev, 2), data, len, - &actual, 5000); - - if (ret < 0) { - dev_err(&usbdev->dev, - "Error : usb_bulk_msg(recv) ( result = %d )\n", ret); - return ret; - } - return 0; -} - -static int download_image(struct usb_device *usbdev, - const struct firmware *firm, - loff_t pos, u32 img_len, u32 magic_num) -{ - struct dn_header h; - int ret = 0; - u32 size; - - size = ALIGN(img_len, DOWNLOAD_SIZE); - h.magic_num = cpu_to_be32(magic_num); - h.file_size = cpu_to_be32(size); - - ret = gdm_wibro_send(usbdev, &h, sizeof(h)); - if (ret < 0) - return ret; - - while (img_len > 0) { - if (img_len > DOWNLOAD_SIZE) - size = DOWNLOAD_SIZE; - else - size = img_len; /* the last chunk of data */ - - memcpy(tx_buf, firm->data + pos, size); - ret = gdm_wibro_send(usbdev, tx_buf, size); - - if (ret < 0) - return ret; - - img_len -= size; - pos += size; - } - - return ret; -} - -int usb_boot(struct usb_device *usbdev, u16 pid) -{ - int i, ret = 0; - struct img_header hdr; - struct fw_info fw_info; - loff_t pos = 0; - char *img_name = FW_DIR FW_UIMG; - const struct firmware *firm; - - ret = reject_firmware(&firm, img_name, &usbdev->dev); - if (ret < 0) { - dev_err(&usbdev->dev, - "requesting firmware %s failed with error %d\n", - img_name, ret); - return ret; - } - - tx_buf = kmalloc(DOWNLOAD_SIZE, GFP_KERNEL); - if (!tx_buf) { - release_firmware(firm); - return -ENOMEM; - } - - if (firm->size < sizeof(hdr)) { - dev_err(&usbdev->dev, "Cannot read the image info.\n"); - ret = -EIO; - goto out; - } - memcpy(&hdr, firm->data, sizeof(hdr)); - - array_le32_to_cpu((u32 *)&hdr, 19); - - if (hdr.count > MAX_IMG_CNT) { - dev_err(&usbdev->dev, "Too many images. %d\n", hdr.count); - ret = -EINVAL; - goto out; - } - - for (i = 0; i < hdr.count; i++) { - if (hdr.offset[i] > hdr.len) { - dev_err(&usbdev->dev, - "Invalid offset. Entry = %d Offset = 0x%08x Image length = 0x%08x\n", - i, hdr.offset[i], hdr.len); - ret = -EINVAL; - goto out; - } - - pos = hdr.offset[i]; - if (firm->size < sizeof(fw_info) + pos) { - dev_err(&usbdev->dev, "Cannot read the FW info.\n"); - ret = -EIO; - goto out; - } - memcpy(&fw_info, firm->data + pos, sizeof(fw_info)); - - array_le32_to_cpu((u32 *)&fw_info, 8); - - if ((fw_info.id & 0xffff) != pid) - continue; - - pos = hdr.offset[i] + fw_info.kernel_offset; - if (firm->size < fw_info.kernel_len + pos) { - dev_err(&usbdev->dev, "Kernel FW is too small.\n"); - goto out; - } - - ret = download_image(usbdev, firm, pos, fw_info.kernel_len, - DN_KERNEL_MAGIC_NUMBER); - if (ret < 0) - goto out; - dev_info(&usbdev->dev, "GCT: Kernel download success.\n"); - - pos = hdr.offset[i] + fw_info.rootfs_offset; - if (firm->size < fw_info.rootfs_len + pos) { - dev_err(&usbdev->dev, "Filesystem FW is too small.\n"); - goto out; - } - ret = download_image(usbdev, firm, pos, fw_info.rootfs_len, - DN_ROOTFS_MAGIC_NUMBER); - if (ret < 0) - goto out; - dev_info(&usbdev->dev, "GCT: Filesystem download success.\n"); - - break; - } - - if (i == hdr.count) { - dev_err(&usbdev->dev, "Firmware for gsk%x is not installed.\n", - pid); - ret = -EINVAL; - } -out: - release_firmware(firm); - kfree(tx_buf); - return ret; -} - -/*#define GDM7205_PADDING 256 */ -#define DOWNLOAD_CHUCK 2048 -#define KERNEL_TYPE_STRING "linux" -#define FS_TYPE_STRING "rootfs" - -static int em_wait_ack(struct usb_device *usbdev, int send_zlp) -{ - int ack; - int ret = -1; - - if (send_zlp) { - /*Send ZLP*/ - ret = gdm_wibro_send(usbdev, NULL, 0); - if (ret < 0) - goto out; - } - - /*Wait for ACK*/ - ret = gdm_wibro_recv(usbdev, &ack, sizeof(ack)); - if (ret < 0) - goto out; -out: - return ret; -} - -static int em_download_image(struct usb_device *usbdev, const char *img_name, - char *type_string) -{ - char *buf = NULL; - loff_t pos = 0; - int ret = 0; - int len; - int img_len; - const struct firmware *firm; - #if defined(GDM7205_PADDING) - const int pad_size = GDM7205_PADDING; - #else - const int pad_size = 0; - #endif - - ret = reject_firmware(&firm, img_name, &usbdev->dev); - if (ret < 0) { - dev_err(&usbdev->dev, - "requesting firmware %s failed with error %d\n", - img_name, ret); - return ret; - } - - buf = kmalloc(DOWNLOAD_CHUCK + pad_size, GFP_KERNEL); - if (!buf) { - release_firmware(firm); - return -ENOMEM; - } - - strcpy(buf+pad_size, type_string); - ret = gdm_wibro_send(usbdev, buf, strlen(type_string)+pad_size); - if (ret < 0) - goto out; - - img_len = firm->size; - - if (img_len <= 0) { - ret = -1; - goto out; - } - - while (img_len > 0) { - if (img_len > DOWNLOAD_CHUCK) - len = DOWNLOAD_CHUCK; - else - len = img_len; /* the last chunk of data */ - - memcpy(buf+pad_size, firm->data + pos, len); - ret = gdm_wibro_send(usbdev, buf, len+pad_size); - - if (ret < 0) - goto out; - - img_len -= DOWNLOAD_CHUCK; - pos += DOWNLOAD_CHUCK; - - ret = em_wait_ack(usbdev, ((len+pad_size) % 512 == 0)); - if (ret < 0) - goto out; - } - - ret = em_wait_ack(usbdev, 1); - if (ret < 0) - goto out; - -out: - release_firmware(firm); - kfree(buf); - - return ret; -} - -static int em_fw_reset(struct usb_device *usbdev) -{ - /*Send ZLP*/ - return gdm_wibro_send(usbdev, NULL, 0); -} - -int usb_emergency(struct usb_device *usbdev) -{ - int ret; - const char *kern_name = FW_DIR FW_KERN; - const char *fs_name = FW_DIR FW_FS; - - ret = em_download_image(usbdev, kern_name, KERNEL_TYPE_STRING); - if (ret < 0) - return ret; - dev_err(&usbdev->dev, "GCT Emergency: Kernel download success.\n"); - - ret = em_download_image(usbdev, fs_name, FS_TYPE_STRING); - if (ret < 0) - return ret; - dev_info(&usbdev->dev, "GCT Emergency: Filesystem download success.\n"); - - ret = em_fw_reset(usbdev); - - return ret; -} |