-// SPDX-License-Identifier: GPL-2.0
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Driver for MikroTik RouterBoot hard config.
*
* the MTD device without using a local buffer (except when requesting WLAN
* calibration data), at the cost of a performance penalty.
*
+ * Note: PAGE_SIZE is assumed to be >= 4K, hence the device attribute show
+ * routines need not check for output overflow.
+ *
* Some constant defines extracted from routerboot.{c,h} by Gabor Juhos
* <juhosg@openwrt.org>
*/
#include "routerboot.h"
-#define RB_HARDCONFIG_VER "0.01"
+#define RB_HARDCONFIG_VER "0.04"
#define RB_HC_PR_PFX "[rb_hardconfig] "
/* ID values for hardware settings */
#define RB_HW_OPT_HAS_VOLTAGE BIT(1)
#define RB_HW_OPT_HAS_USB BIT(2)
#define RB_HW_OPT_HAS_ATTINY BIT(3)
+#define RB_HW_OPT_PULSE_DUTY_CYCLE BIT(9)
#define RB_HW_OPT_NO_NAND BIT(14)
#define RB_HW_OPT_HAS_LCD BIT(15)
#define RB_HW_OPT_HAS_POE_OUT BIT(16)
static u8 *hc_buf; // ro buffer after init(): no locking required
static size_t hc_buflen;
+/*
+ * For LZOR style WLAN data unpacking.
+ * This binary blob is prepended to the data encoded on some devices as
+ * RB_ID_WLAN_DATA, the result is then first decompressed with LZO, and then
+ * finally RLE-decoded.
+ * This binary blob has been extracted from RouterOS by
+ * https://forum.openwrt.org/u/ius
+ */
+static const u8 hc_lzor_prefix[] = {
+ 0x00, 0x05, 0x4c, 0x4c, 0x44, 0x00, 0x34, 0xfe,
+ 0xfe, 0x34, 0x11, 0x3c, 0x1e, 0x3c, 0x2e, 0x3c,
+ 0x4c, 0x34, 0x00, 0x52, 0x62, 0x92, 0xa2, 0xb2,
+ 0xc3, 0x2a, 0x14, 0x00, 0x00, 0x05, 0xfe, 0x6a,
+ 0x3c, 0x16, 0x32, 0x16, 0x11, 0x1e, 0x12, 0x46,
+ 0x32, 0x46, 0x11, 0x4e, 0x12, 0x36, 0x32, 0x36,
+ 0x11, 0x3e, 0x12, 0x5a, 0x9a, 0x64, 0x00, 0x04,
+ 0xfe, 0x10, 0x3c, 0x00, 0x01, 0x00, 0x00, 0x28,
+ 0x0c, 0x00, 0x0f, 0xfe, 0x14, 0x00, 0x24, 0x24,
+ 0x23, 0x24, 0x24, 0x23, 0x25, 0x22, 0x21, 0x21,
+ 0x23, 0x22, 0x21, 0x22, 0x21, 0x2d, 0x38, 0x00,
+ 0x0c, 0x25, 0x25, 0x24, 0x25, 0x25, 0x24, 0x23,
+ 0x22, 0x21, 0x20, 0x23, 0x21, 0x21, 0x22, 0x21,
+ 0x2d, 0x38, 0x00, 0x28, 0xb0, 0x00, 0x00, 0x22,
+ 0x00, 0x00, 0xc0, 0xfe, 0x03, 0x00, 0xc0, 0x00,
+ 0x62, 0xff, 0x62, 0xff, 0xfe, 0x06, 0x00, 0xbb,
+ 0xff, 0xba, 0xff, 0xfe, 0x08, 0x00, 0x9e, 0xff,
+ 0xfe, 0x0a, 0x00, 0x53, 0xff, 0xfe, 0x02, 0x00,
+ 0x20, 0xff, 0xb1, 0xfe, 0xfe, 0xb2, 0xfe, 0xfe,
+ 0xed, 0xfe, 0xfe, 0xfe, 0x04, 0x00, 0x3a, 0xff,
+ 0x3a, 0xff, 0xde, 0xfd, 0x5f, 0x04, 0x33, 0xff,
+ 0x4c, 0x74, 0x03, 0x05, 0x05, 0xff, 0x6d, 0xfe,
+ 0xfe, 0x6d, 0xfe, 0xfe, 0xaf, 0x08, 0x63, 0xff,
+ 0x64, 0x6f, 0x08, 0xac, 0xff, 0xbf, 0x6d, 0x08,
+ 0x7a, 0x6d, 0x08, 0x96, 0x74, 0x04, 0x00, 0x08,
+ 0x79, 0xff, 0xda, 0xfe, 0xfe, 0xdb, 0xfe, 0xfe,
+ 0x56, 0xff, 0xfe, 0x04, 0x00, 0x5e, 0xff, 0x5e,
+ 0xff, 0x6c, 0xfe, 0xfe, 0xfe, 0x06, 0x00, 0x41,
+ 0xff, 0x7f, 0x74, 0x03, 0x00, 0x11, 0x44, 0xff,
+ 0xa9, 0xfe, 0xfe, 0xa9, 0xfe, 0xfe, 0xa5, 0x8f,
+ 0x01, 0x00, 0x08, 0x01, 0x01, 0x02, 0x04, 0x08,
+ 0x02, 0x04, 0x08, 0x08, 0x01, 0x01, 0xfe, 0x22,
+ 0x00, 0x4c, 0x60, 0x64, 0x8c, 0x90, 0xd0, 0xd4,
+ 0xd8, 0x5c, 0x10, 0x09, 0xd8, 0xff, 0xb0, 0xff,
+ 0x00, 0x00, 0xba, 0xff, 0x14, 0x00, 0xba, 0xff,
+ 0x64, 0x00, 0x00, 0x08, 0xfe, 0x06, 0x00, 0x74,
+ 0xff, 0x42, 0xff, 0xce, 0xff, 0x60, 0xff, 0x0a,
+ 0x00, 0xb4, 0x00, 0xa0, 0x00, 0xa0, 0xfe, 0x07,
+ 0x00, 0x0a, 0x00, 0xb0, 0xff, 0x96, 0x4d, 0x00,
+ 0x56, 0x57, 0x18, 0xa6, 0xff, 0x92, 0x70, 0x11,
+ 0x00, 0x12, 0x90, 0x90, 0x76, 0x5a, 0x54, 0x54,
+ 0x4c, 0x46, 0x38, 0x00, 0x10, 0x10, 0x08, 0xfe,
+ 0x05, 0x00, 0x38, 0x29, 0x25, 0x23, 0x22, 0x22,
+ 0x1f, 0x00, 0x00, 0x00, 0xf6, 0xe1, 0xdd, 0xf8,
+ 0xfe, 0x00, 0xfe, 0x15, 0x00, 0x00, 0xd0, 0x02,
+ 0x74, 0x02, 0x08, 0xf8, 0xe5, 0xde, 0x02, 0x04,
+ 0x04, 0xfd, 0x00, 0x00, 0x00, 0x07, 0x50, 0x2d,
+ 0x01, 0x90, 0x90, 0x76, 0x60, 0xb0, 0x07, 0x07,
+ 0x0c, 0x0c, 0x04, 0xfe, 0x05, 0x00, 0x66, 0x66,
+ 0x5a, 0x56, 0xbc, 0x01, 0x06, 0xfc, 0xfc, 0xf1,
+ 0xfe, 0x07, 0x00, 0x24, 0x95, 0x70, 0x64, 0x18,
+ 0x06, 0x2c, 0xff, 0xb5, 0xfe, 0xfe, 0xb5, 0xfe,
+ 0xfe, 0xe2, 0x8c, 0x24, 0x02, 0x2f, 0xff, 0x2f,
+ 0xff, 0xb4, 0x78, 0x02, 0x05, 0x73, 0xff, 0xed,
+ 0xfe, 0xfe, 0x4f, 0xff, 0x36, 0x74, 0x1e, 0x09,
+ 0x4f, 0xff, 0x50, 0xff, 0xfe, 0x16, 0x00, 0x70,
+ 0xac, 0x70, 0x8e, 0xac, 0x40, 0x0e, 0x01, 0x70,
+ 0x7f, 0x8e, 0xac, 0x6c, 0x00, 0x0b, 0xfe, 0x02,
+ 0x00, 0xfe, 0x0a, 0x2c, 0x2a, 0x2a, 0x28, 0x26,
+ 0x1e, 0x1e, 0xfe, 0x02, 0x20, 0x65, 0x20, 0x00,
+ 0x00, 0x05, 0x12, 0x00, 0x11, 0x1e, 0x11, 0x11,
+ 0x41, 0x1e, 0x41, 0x11, 0x31, 0x1e, 0x31, 0x11,
+ 0x70, 0x75, 0x7a, 0x7f, 0x84, 0x89, 0x8e, 0x93,
+ 0x98, 0x30, 0x20, 0x00, 0x02, 0x00, 0xfe, 0x06,
+ 0x3c, 0xbc, 0x32, 0x0c, 0x00, 0x00, 0x2a, 0x12,
+ 0x1e, 0x12, 0x2e, 0x12, 0xcc, 0x12, 0x11, 0x1a,
+ 0x1e, 0x1a, 0x2e, 0x1a, 0x4c, 0x10, 0x1e, 0x10,
+ 0x11, 0x18, 0x1e, 0x42, 0x1e, 0x42, 0x2e, 0x42,
+ 0xcc, 0x42, 0x11, 0x4a, 0x1e, 0x4a, 0x2e, 0x4a,
+ 0x4c, 0x40, 0x1e, 0x40, 0x11, 0x48, 0x1e, 0x32,
+ 0x1e, 0x32, 0x2e, 0x32, 0xcc, 0x32, 0x11, 0x3a,
+ 0x1e, 0x3a, 0x2e, 0x3a, 0x4c, 0x30, 0x1e, 0x30,
+ 0x11, 0x38, 0x1e, 0x27, 0x9a, 0x01, 0x9d, 0xa2,
+ 0x2f, 0x28, 0x00, 0x00, 0x46, 0xde, 0xc4, 0xbf,
+ 0xa6, 0x9d, 0x81, 0x7b, 0x5c, 0x61, 0x40, 0xc7,
+ 0xc0, 0xae, 0xa9, 0x8c, 0x83, 0x6a, 0x62, 0x50,
+ 0x3e, 0xce, 0xc2, 0xae, 0xa3, 0x8c, 0x7b, 0x6a,
+ 0x5a, 0x50, 0x35, 0xd7, 0xc2, 0xb7, 0xa4, 0x95,
+ 0x7e, 0x72, 0x5a, 0x59, 0x37, 0xfe, 0x02, 0xf8,
+ 0x8c, 0x95, 0x90, 0x8f, 0x00, 0xd7, 0xc0, 0xb7,
+ 0xa2, 0x95, 0x7b, 0x72, 0x56, 0x59, 0x32, 0xc7,
+ 0xc3, 0xae, 0xad, 0x8c, 0x85, 0x6a, 0x63, 0x50,
+ 0x3e, 0xce, 0xc3, 0xae, 0xa4, 0x8c, 0x7c, 0x6a,
+ 0x59, 0x50, 0x34, 0xd7, 0xc2, 0xb7, 0xa5, 0x95,
+ 0x7e, 0x72, 0x59, 0x59, 0x36, 0xfc, 0x05, 0x00,
+ 0x02, 0xce, 0xc5, 0xae, 0xa5, 0x95, 0x83, 0x72,
+ 0x5c, 0x59, 0x36, 0xbf, 0xc6, 0xa5, 0xab, 0x8c,
+ 0x8c, 0x6a, 0x67, 0x50, 0x41, 0x64, 0x07, 0x00,
+ 0x02, 0x95, 0x8c, 0x72, 0x65, 0x59, 0x3f, 0xce,
+ 0xc7, 0xae, 0xa8, 0x95, 0x86, 0x72, 0x5f, 0x59,
+ 0x39, 0xfe, 0x02, 0xf8, 0x8b, 0x7c, 0x0b, 0x09,
+ 0xb7, 0xc2, 0x9d, 0xa4, 0x83, 0x85, 0x6a, 0x6b,
+ 0x50, 0x44, 0xb7, 0xc1, 0x64, 0x01, 0x00, 0x06,
+ 0x61, 0x5d, 0x48, 0x3d, 0xae, 0xc4, 0x9d, 0xad,
+ 0x7b, 0x85, 0x61, 0x66, 0x48, 0x46, 0xae, 0xc3,
+ 0x95, 0xa3, 0x72, 0x7c, 0x59, 0x56, 0x38, 0x31,
+ 0x7c, 0x0b, 0x00, 0x0c, 0x96, 0x91, 0x8f, 0x00,
+ 0xb7, 0xc0, 0xa5, 0xab, 0x8c, 0x8a, 0x6a, 0x64,
+ 0x50, 0x3c, 0xb7, 0xc0, 0x9d, 0xa0, 0x83, 0x80,
+ 0x6a, 0x64, 0x50, 0x3d, 0xb7, 0xc5, 0x9d, 0xa5,
+ 0x83, 0x87, 0x6c, 0x08, 0x07, 0xae, 0xc0, 0x9d,
+ 0xa8, 0x83, 0x88, 0x6a, 0x6d, 0x50, 0x46, 0xfc,
+ 0x05, 0x00, 0x16, 0xbf, 0xc0, 0xa5, 0xa2, 0x8c,
+ 0x7f, 0x6a, 0x57, 0x50, 0x2f, 0xb7, 0xc7, 0xa5,
+ 0xb1, 0x8c, 0x8e, 0x72, 0x6d, 0x59, 0x45, 0xbf,
+ 0xc6, 0xa5, 0xa8, 0x8c, 0x87, 0x6a, 0x5f, 0x50,
+ 0x37, 0xbf, 0xc2, 0xa5, 0xa4, 0x8c, 0x83, 0x6a,
+ 0x5c, 0x50, 0x34, 0xbc, 0x05, 0x00, 0x0e, 0x90,
+ 0x00, 0xc7, 0xc2, 0xae, 0xaa, 0x95, 0x82, 0x7b,
+ 0x60, 0x61, 0x3f, 0xb7, 0xc6, 0xa5, 0xb1, 0x8c,
+ 0x8d, 0x72, 0x6b, 0x61, 0x51, 0xbf, 0xc4, 0xa5,
+ 0xa5, 0x8c, 0x82, 0x72, 0x61, 0x59, 0x39, 0x6c,
+ 0x26, 0x03, 0x95, 0x82, 0x7b, 0x61, 0x61, 0x40,
+ 0xfc, 0x05, 0x00, 0x00, 0x7e, 0xd7, 0xc3, 0xb7,
+ 0xa8, 0x9d, 0x80, 0x83, 0x5d, 0x6a, 0x3f, 0xbf,
+ 0xc7, 0xa5, 0xa8, 0x8c, 0x84, 0x72, 0x60, 0x61,
+ 0x46, 0xbf, 0xc2, 0xae, 0xb0, 0x9d, 0x92, 0x83,
+ 0x6f, 0x6a, 0x50, 0xd7, 0xc3, 0xb7, 0xa7, 0x9d,
+ 0x80, 0x83, 0x5e, 0x6a, 0x40, 0xfe, 0x02, 0xf8,
+ 0x8d, 0x96, 0x90, 0x90, 0xfe, 0x05, 0x00, 0x8a,
+ 0xc4, 0x63, 0xb8, 0x3c, 0xa6, 0x29, 0x97, 0x16,
+ 0x81, 0x84, 0xb7, 0x5b, 0xa9, 0x33, 0x94, 0x1e,
+ 0x83, 0x11, 0x70, 0xb8, 0xc2, 0x70, 0xb1, 0x4d,
+ 0xa3, 0x2a, 0x8d, 0x1b, 0x7b, 0xa8, 0xbc, 0x68,
+ 0xab, 0x47, 0x9d, 0x27, 0x87, 0x18, 0x75, 0xae,
+ 0xc6, 0x7d, 0xbb, 0x4d, 0xaa, 0x1c, 0x84, 0x11,
+ 0x72, 0xa3, 0xbb, 0x6e, 0xad, 0x3c, 0x97, 0x24,
+ 0x85, 0x16, 0x71, 0x80, 0xb2, 0x57, 0xa4, 0x30,
+ 0x8e, 0x1c, 0x7c, 0x10, 0x68, 0xbb, 0xbd, 0x75,
+ 0xac, 0x4f, 0x9e, 0x2b, 0x87, 0x1a, 0x76, 0x96,
+ 0xc5, 0x5e, 0xb5, 0x3e, 0xa5, 0x1f, 0x8c, 0x12,
+ 0x7a, 0xc1, 0xc6, 0x42, 0x9f, 0x27, 0x8c, 0x16,
+ 0x77, 0x0f, 0x67, 0x9d, 0xbc, 0x68, 0xad, 0x36,
+ 0x95, 0x20, 0x83, 0x11, 0x6d, 0x9b, 0xb8, 0x67,
+ 0xa8, 0x34, 0x90, 0x1f, 0x7c, 0x10, 0x67, 0x9e,
+ 0xc9, 0x6a, 0xbb, 0x37, 0xa4, 0x20, 0x90, 0x11,
+ 0x7b, 0xc6, 0xc8, 0x47, 0xa4, 0x2a, 0x90, 0x18,
+ 0x7b, 0x10, 0x6c, 0xae, 0xc4, 0x5d, 0xad, 0x37,
+ 0x9a, 0x1f, 0x85, 0x13, 0x75, 0x70, 0xad, 0x42,
+ 0x99, 0x25, 0x84, 0x17, 0x74, 0x0b, 0x56, 0x87,
+ 0xc8, 0x57, 0xb8, 0x2b, 0x9e, 0x19, 0x8a, 0x0d,
+ 0x74, 0xa7, 0xc8, 0x6e, 0xb9, 0x36, 0xa0, 0x1f,
+ 0x8b, 0x11, 0x75, 0x94, 0xbe, 0x4b, 0xa5, 0x2a,
+ 0x92, 0x18, 0x7c, 0x0f, 0x6b, 0xaf, 0xc0, 0x58,
+ 0xa8, 0x34, 0x94, 0x1d, 0x7d, 0x12, 0x6d, 0x82,
+ 0xc0, 0x52, 0xb0, 0x25, 0x94, 0x14, 0x7f, 0x0c,
+ 0x68, 0x84, 0xbf, 0x3e, 0xa4, 0x22, 0x8e, 0x10,
+ 0x76, 0x0b, 0x65, 0x88, 0xb6, 0x42, 0x9b, 0x26,
+ 0x87, 0x14, 0x70, 0x0c, 0x5f, 0xc5, 0xc2, 0x3e,
+ 0x97, 0x23, 0x83, 0x13, 0x6c, 0x0c, 0x5c, 0xb1,
+ 0xc9, 0x76, 0xbc, 0x4a, 0xaa, 0x20, 0x8d, 0x12,
+ 0x78, 0x93, 0xbf, 0x46, 0xa3, 0x26, 0x8d, 0x14,
+ 0x74, 0x0c, 0x62, 0xc8, 0xc4, 0x3b, 0x97, 0x21,
+ 0x82, 0x11, 0x6a, 0x0a, 0x59, 0xa3, 0xb9, 0x68,
+ 0xa9, 0x30, 0x8d, 0x1a, 0x78, 0x0f, 0x61, 0xa0,
+ 0xc9, 0x73, 0xbe, 0x50, 0xb1, 0x30, 0x9f, 0x14,
+ 0x80, 0x83, 0xb7, 0x3c, 0x9a, 0x20, 0x84, 0x0e,
+ 0x6a, 0x0a, 0x57, 0xac, 0xc2, 0x68, 0xb0, 0x2e,
+ 0x92, 0x19, 0x7c, 0x0d, 0x63, 0x93, 0xbe, 0x62,
+ 0xb0, 0x3c, 0x9e, 0x1a, 0x80, 0x0e, 0x6b, 0xbb,
+ 0x02, 0xa0, 0x02, 0xa0, 0x02, 0x6f, 0x00, 0x75,
+ 0x00, 0x75, 0x00, 0x00, 0x00, 0xad, 0x02, 0xb3,
+ 0x02, 0x6f, 0x00, 0x87, 0x00, 0x85, 0xfe, 0x03,
+ 0x00, 0xc2, 0x02, 0x82, 0x4d, 0x92, 0x6e, 0x4d,
+ 0xb1, 0xa8, 0x84, 0x01, 0x00, 0x07, 0x7e, 0x00,
+ 0xa8, 0x02, 0xa4, 0x02, 0xa4, 0x02, 0xa2, 0x00,
+ 0xa6, 0x00, 0xa6, 0x00, 0x00, 0x00, 0xb4, 0x02,
+ 0xb4, 0x02, 0x92, 0x00, 0x96, 0x00, 0x96, 0x46,
+ 0x04, 0xb0, 0x02, 0x64, 0x02, 0x0a, 0x8c, 0x00,
+ 0x90, 0x02, 0x98, 0x02, 0x98, 0x02, 0x0e, 0x01,
+ 0x11, 0x01, 0x11, 0x50, 0xc3, 0x08, 0x88, 0x02,
+ 0x88, 0x02, 0x19, 0x01, 0x02, 0x01, 0x02, 0x01,
+ 0xf3, 0x2d, 0x00, 0x00
+};
+
/* Array of known hw_options bits with human-friendly parsing */
static struct hc_hwopt {
const u32 bit;
},
};
-static ssize_t hc_tag_show_string(const u8 *pld, u16 pld_len, char *buf)
-{
- return snprintf(buf, pld_len+1, "%s\n", pld);
-}
-
static ssize_t hc_tag_show_u32(const u8 *pld, u16 pld_len, char *buf)
{
char *out = buf;
.kattr = __ATTR(mac_base, S_IRUSR, hc_attr_show, NULL),
}, {
.tag_id = RB_ID_BOARD_PRODUCT_CODE,
- .tshow = hc_tag_show_string,
+ .tshow = routerboot_tag_show_string,
.kattr = __ATTR(board_product_code, S_IRUSR, hc_attr_show, NULL),
}, {
.tag_id = RB_ID_BIOS_VERSION,
- .tshow = hc_tag_show_string,
+ .tshow = routerboot_tag_show_string,
.kattr = __ATTR(booter_version, S_IRUSR, hc_attr_show, NULL),
}, {
.tag_id = RB_ID_SERIAL_NUMBER,
- .tshow = hc_tag_show_string,
+ .tshow = routerboot_tag_show_string,
.kattr = __ATTR(board_serial, S_IRUSR, hc_attr_show, NULL),
}, {
.tag_id = RB_ID_MEMORY_SIZE,
.tshow = NULL,
}, {
.tag_id = RB_ID_BOARD_IDENTIFIER,
- .tshow = hc_tag_show_string,
+ .tshow = routerboot_tag_show_string,
.kattr = __ATTR(board_identifier, S_IRUSR, hc_attr_show, NULL),
}, {
.tag_id = RB_ID_PRODUCT_NAME,
- .tshow = hc_tag_show_string,
+ .tshow = routerboot_tag_show_string,
.kattr = __ATTR(product_name, S_IRUSR, hc_attr_show, NULL),
}, {
.tag_id = RB_ID_DEFCONF,
- .tshow = hc_tag_show_string,
+ .tshow = routerboot_tag_show_string,
.kattr = __ATTR(defconf, S_IRUSR, hc_attr_show, NULL),
}
};
return ret;
}
+/*
+ * If the RB_ID_WLAN_DATA payload starts with RB_MAGIC_LZOR, then past
+ * that magic number is a payload that must be appended to the hc_lzor_prefix,
+ * the resulting blob is LZO-compressed. In the LZO decompression result,
+ * the RB_MAGIC_ERD magic number (aligned) must be located. Following that
+ * magic, there is a routerboot tag node (id 0x1) locating the RLE-encoded
+ * calibration data payload.
+ */
+static int hc_wlan_data_unpack_lzor(const u8 *inbuf, size_t inlen,
+ void *outbuf, size_t *outlen)
+{
+ u16 rle_ofs, rle_len;
+ const u32 *needle;
+ u8 *tempbuf;
+ size_t templen, lzo_len;
+ int ret;
+
+ lzo_len = inlen + sizeof(hc_lzor_prefix);
+ if (lzo_len > *outlen)
+ return -EFBIG;
+
+ /* Temporary buffer same size as the outbuf */
+ templen = *outlen;
+ tempbuf = kmalloc(templen, GFP_KERNEL);
+ if (!outbuf)
+ return -ENOMEM;
+
+ /* Concatenate into the outbuf */
+ memcpy(outbuf, hc_lzor_prefix, sizeof(hc_lzor_prefix));
+ memcpy(outbuf + sizeof(hc_lzor_prefix), inbuf, inlen);
+
+ /* LZO-decompress lzo_len bytes of outbuf into the tempbuf */
+ ret = lzo1x_decompress_safe(outbuf, lzo_len, tempbuf, &templen);
+ if (ret) {
+ if (LZO_E_INPUT_NOT_CONSUMED == ret) {
+ /*
+ * The tag length appears to always be aligned (probably
+ * because it is the "root" RB_ID_WLAN_DATA tag), thus
+ * the LZO payload may be padded, which can trigger a
+ * spurious error which we ignore here.
+ */
+ pr_debug(RB_HC_PR_PFX "LZOR: LZO EOF before buffer end - this may be harmless\n");
+ } else {
+ pr_debug(RB_HC_PR_PFX "LZOR: LZO decompression error (%d)\n", ret);
+ goto fail;
+ }
+ }
+
+ /*
+ * Post decompression we have a blob (possibly byproduct of the lzo
+ * dictionary). We need to find RB_MAGIC_ERD. The magic number seems to
+ * be 32bit-aligned in the decompression output.
+ */
+ needle = (const u32 *)tempbuf;
+ while (RB_MAGIC_ERD != *needle++) {
+ if ((u8 *)needle >= tempbuf+templen) {
+ pr_debug(RB_HC_PR_PFX "LZOR: ERD magic not found\n");
+ ret = -ENODATA;
+ goto fail;
+ }
+ };
+ templen -= (u8 *)needle - tempbuf;
+
+ /* Past magic. Look for tag node */
+ ret = routerboot_tag_find((u8 *)needle, templen, 0x1, &rle_ofs, &rle_len);
+ if (ret) {
+ pr_debug(RB_HC_PR_PFX "LZOR: RLE data not found\n");
+ goto fail;
+ }
+
+ if (rle_len > templen) {
+ pr_debug(RB_HC_PR_PFX "LZOR: Invalid RLE data length\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ /* RLE-decode tempbuf from needle back into the outbuf */
+ ret = routerboot_rle_decode((u8 *)needle+rle_ofs, rle_len, outbuf, outlen);
+ if (ret)
+ pr_debug(RB_HC_PR_PFX "LZOR: RLE decoding error (%d)\n", ret);
+
+fail:
+ kfree(tempbuf);
+ return ret;
+}
+
static int hc_wlan_data_unpack(const size_t tofs, size_t tlen,
void *outbuf, size_t *outlen)
{
ret = -ENODATA;
switch (magic) {
+ case RB_MAGIC_LZOR:
+ /* Skip magic */
+ lbuf += sizeof(magic);
+ tlen -= sizeof(magic);
+ ret = hc_wlan_data_unpack_lzor(lbuf, tlen, outbuf, outlen);
+ break;
case RB_MAGIC_ERD:
/* Skip magic */
lbuf += sizeof(magic);
static ssize_t hc_attr_show(struct kobject *kobj, struct kobj_attribute *attr,
char *buf)
{
- struct hc_attr *hc_attr;
+ const struct hc_attr *hc_attr;
const u8 *pld;
u16 pld_len;
ret = mtd_read(mtd, 0, hc_buflen, &bytes_read, hc_buf);
+ if (ret)
+ goto fail;
+
if (bytes_read != hc_buflen) {
ret = -EIO;
goto fail;
ret = sysfs_create_bin_file(hc_kobj, &hc_wlandata_battr.battr);
if (ret)
- pr_err(RB_HC_PR_PFX "Could not create %s sysfs entry (%d)\n",
+ pr_warn(RB_HC_PR_PFX "Could not create %s sysfs entry (%d)\n",
hc_wlandata_battr.battr.attr.name, ret);
}
/* All other tags are published via standard attributes */
else {
ret = sysfs_create_file(hc_kobj, &hc_attrs[i].kattr.attr);
if (ret)
- pr_err(RB_HC_PR_PFX "Could not create %s sysfs entry (%d)\n",
+ pr_warn(RB_HC_PR_PFX "Could not create %s sysfs entry (%d)\n",
hc_attrs[i].kattr.attr.name, ret);
}
}
projects / openwrt / staging / luka.git / blobdiff