Merge branch '2020-04-17-master-imports'

- Further cleanups for 'make refcheckdocs'
- Another BTRFS fix.
- Support for automatic decompression of images with booti as well as
  unlz4 command for manual decompression.

README

@@ -3203,9 +3203,9 @@ is done by typing:
 	make NAME_defconfig
 
 where "NAME_defconfig" is the name of one of the existing configu-
-rations; see boards.cfg for supported names.
+rations; see configs/*_defconfig for supported names.
 
-Note: for some board special configuration names may exist; check if
+Note: for some boards special configuration names may exist; check if
       additional information is available from the board vendor; for
       instance, the TQM823L systems are available without (standard)
       or with LCD support. You can select such additional "features"

arch/arm/dts/mt7622.dtsi

@@ -227,4 +227,23 @@
 		#clock-cells = <1>;
 	};
 
+	pwm: pwm@11006000 {
+		compatible = "mediatek,mt7622-pwm";
+		reg = <0x11006000 0x1000>;
+		#clock-cells = <1>;
+		#pwm-cells = <2>;
+		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_PWM_SEL>,
+			 <&pericfg CLK_PERI_PWM_PD>,
+			 <&pericfg CLK_PERI_PWM1_PD>,
+			 <&pericfg CLK_PERI_PWM2_PD>,
+			 <&pericfg CLK_PERI_PWM3_PD>,
+			 <&pericfg CLK_PERI_PWM4_PD>,
+			 <&pericfg CLK_PERI_PWM5_PD>,
+			 <&pericfg CLK_PERI_PWM6_PD>;
+		clock-names = "top", "main", "pwm1", "pwm2", "pwm3", "pwm4",
+			      "pwm5", "pwm6";
+		status = "disabled";
+	};
+
 };

arch/arm/dts/mt7623.dtsi

@@ -400,4 +400,21 @@
 		mediatek,ethsys = <&ethsys>;
 		status = "disabled";
 	};
+
+	pwm: pwm@11006000 {
+		compatible = "mediatek,mt7623-pwm";
+		reg = <0x11006000 0x1000>;
+		#clock-cells = <1>;
+		#pwm-cells = <2>;
+		clocks = <&topckgen CLK_TOP_PWM_SEL>,
+			 <&pericfg CLK_PERI_PWM>,
+			 <&pericfg CLK_PERI_PWM1>,
+			 <&pericfg CLK_PERI_PWM2>,
+			 <&pericfg CLK_PERI_PWM3>,
+			 <&pericfg CLK_PERI_PWM4>,
+			 <&pericfg CLK_PERI_PWM5>;
+		clock-names = "top", "main", "pwm1", "pwm2", "pwm3", "pwm4",
+			      "pwm5";
+		status = "disabled";
+	};
 };

arch/arm/dts/mt7629.dtsi

@@ -281,4 +281,20 @@
 		reg = <0x1b130000 0x1000>;
 		#clock-cells = <1>;
 	};
+
+	pwm: pwm@11006000 {
+		compatible = "mediatek,mt7629-pwm";
+		reg = <0x11006000 0x1000>;
+		#clock-cells = <1>;
+		#pwm-cells = <2>;
+		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_PWM_SEL>,
+			 <&pericfg CLK_PERI_PWM_PD>,
+			 <&pericfg CLK_PERI_PWM1_PD>;
+		clock-names = "top", "main", "pwm1";
+		assigned-clocks = <&topckgen CLK_TOP_PWM_SEL>;
+		assigned-clock-parents = <&topckgen CLK_TOP_UNIVPLL2_D4>;
+		status = "disabled";
+	};
+
 };

arch/arm/lib/bootm.c

@@ -75,6 +75,9 @@ void arch_lmb_reserve(struct lmb *lmb)
 			gd->bd->bi_dram[bank].size - 1;
 		if (sp > bank_end)
 			continue;
+		if (bank_end > gd->ram_top)
+			bank_end = gd->ram_top - 1;
+
 		lmb_reserve(lmb, sp, bank_end - sp + 1);
 		break;
 	}

cmd/Kconfig

@@ -770,6 +770,13 @@ config CMD_LZMADEC
 	  Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
 	  image from memory.
 
+config CMD_UNLZ4
+	bool "unlz4"
+	default y if CMD_BOOTI
+	select LZ4
+	help
+	  Support decompressing an LZ4 image from memory region.
+
 config CMD_UNZIP
 	bool "unzip"
 	default y if CMD_BOOTI
@@ -2096,7 +2103,7 @@ config CMD_BEDBUG
 	help
 	  The bedbug (emBEDded deBUGger) command provides debugging features
 	  for some PowerPC processors. For details please see the
-	  docuemntation in doc/README.beddbug
+	  documentation in doc/README.bedbug.
 
 config CMD_DIAG
 	bool "diag - Board diagnostics"

cmd/Makefile

@@ -144,6 +144,7 @@ obj-$(CONFIG_CMD_TSI148) += tsi148.o
 obj-$(CONFIG_CMD_UBI) += ubi.o
 obj-$(CONFIG_CMD_UBIFS) += ubifs.o
 obj-$(CONFIG_CMD_UNIVERSE) += universe.o
+obj-$(CONFIG_CMD_UNLZ4) += unlz4.o
 obj-$(CONFIG_CMD_UNZIP) += unzip.o
 obj-$(CONFIG_CMD_VIRTIO) += virtio.o
 obj-$(CONFIG_CMD_WDT) += wdt.o

cmd/booti.c

@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/sizes.h>
 
+DECLARE_GLOBAL_DATA_PTR;
 /*
  * Image booting support
  */
@@ -24,6 +25,12 @@ static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
 	ulong ld;
 	ulong relocated_addr;
 	ulong image_size;
+	uint8_t *temp;
+	ulong dest;
+	ulong dest_end;
+	unsigned long comp_len;
+	unsigned long decomp_len;
+	int ctype;
 
 	ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
 			      images, 1);
@@ -38,6 +45,33 @@ static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
 		debug("*  kernel: cmdline image address = 0x%08lx\n", ld);
 	}
 
+	temp = map_sysmem(ld, 0);
+	ctype = image_decomp_type(temp, 2);
+	if (ctype > 0) {
+		dest = env_get_ulong("kernel_comp_addr_r", 16, 0);
+		comp_len = env_get_ulong("kernel_comp_size", 16, 0);
+		if (!dest || !comp_len) {
+			puts("kernel_comp_addr_r or kernel_comp_size is not provided!\n");
+			return -EINVAL;
+		}
+		if (dest < gd->ram_base || dest > gd->ram_top) {
+			puts("kernel_comp_addr_r is outside of DRAM range!\n");
+			return -EINVAL;
+		}
+
+		debug("kernel image compression type %d size = 0x%08lx address = 0x%08lx\n",
+			ctype, comp_len, (ulong)dest);
+		decomp_len = comp_len * 10;
+		ret = image_decomp(ctype, 0, ld, IH_TYPE_KERNEL,
+				 (void *)dest, (void *)ld, comp_len,
+				 decomp_len, &dest_end);
+		if (ret)
+			return ret;
+		/* dest_end contains the uncompressed Image size */
+		memmove((void *) ld, (void *)dest, dest_end);
+	}
+	unmap_sysmem((void *)ld);
+
 	ret = booti_setup(ld, &relocated_addr, &image_size, false);
 	if (ret != 0)
 		return 1;
@@ -100,10 +134,14 @@ int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 #ifdef CONFIG_SYS_LONGHELP
 static char booti_help_text[] =
 	"[addr [initrd[:size]] [fdt]]\n"
-	"    - boot Linux 'Image' stored at 'addr'\n"
+	"    - boot Linux flat or compressed 'Image' stored at 'addr'\n"
 	"\tThe argument 'initrd' is optional and specifies the address\n"
 	"\tof an initrd in memory. The optional parameter ':size' allows\n"
 	"\tspecifying the size of a RAW initrd.\n"
+	"\tCurrently only booting from gz, bz2, lzma and lz4 compression\n"
+	"\ttypes are supported. In order to boot from any of these compressed\n"
+	"\timages, user have to set kernel_comp_addr_r and kernel_comp_size enviornment\n"
+	"\tvariables beforehand.\n"
 #if defined(CONFIG_OF_LIBFDT)
 	"\tSince booting a Linux kernel requires a flat device-tree, a\n"
 	"\tthird argument providing the address of the device-tree blob\n"

cmd/fat.c

@@ -8,13 +8,7 @@
  * Boot support
  */
 #include <common.h>
-#include <command.h>
-#include <s_record.h>
-#include <net.h>
-#include <ata.h>
-#include <asm/io.h>
 #include <mapmem.h>
-#include <part.h>
 #include <fat.h>
 #include <fs.h>
 

cmd/mem.c

@@ -801,6 +801,59 @@ static ulong mem_test_alt(vu_long *buf, ulong start_addr, ulong end_addr,
 	return errs;
 }
 
+static int compare_regions(volatile unsigned long *bufa,
+			   volatile unsigned long *bufb, size_t count)
+{
+	volatile unsigned long  *p1 = bufa;
+	volatile unsigned long  *p2 = bufb;
+	int errs = 0;
+	size_t i;
+
+	for (i = 0; i < count; i++, p1++, p2++) {
+		if (*p1 != *p2) {
+			printf("FAILURE: 0x%08lx != 0x%08lx (delta=0x%08lx -> bit %ld) at offset 0x%08lx\n",
+			       (unsigned long)*p1, (unsigned long)*p2,
+			       *p1 ^ *p2, __ffs(*p1 ^ *p2),
+				(unsigned long)(i * sizeof(unsigned long)));
+			errs++;
+		}
+	}
+
+	return errs;
+}
+
+static ulong test_bitflip_comparison(volatile unsigned long *bufa,
+				     volatile unsigned long *bufb, size_t count)
+{
+	volatile unsigned long *p1 = bufa;
+	volatile unsigned long *p2 = bufb;
+	unsigned int j, k;
+	unsigned long q;
+	size_t i;
+	int max;
+	int errs = 0;
+
+	max = sizeof(unsigned long) * 8;
+	for (k = 0; k < max; k++) {
+		q = 0x00000001L << k;
+		for (j = 0; j < 8; j++) {
+			WATCHDOG_RESET();
+			q = ~q;
+			p1 = (volatile unsigned long *)bufa;
+			p2 = (volatile unsigned long *)bufb;
+			for (i = 0; i < count; i++)
+				*p1++ = *p2++ = (i % 2) == 0 ? q : ~q;
+
+			errs += compare_regions(bufa, bufb, count);
+		}
+
+		if (ctrlc())
+			return -1UL;
+	}
+
+	return errs;
+}
+
 static ulong mem_test_quick(vu_long *buf, ulong start_addr, ulong end_addr,
 			    vu_long pattern, int iteration)
 {
@@ -871,15 +924,10 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
 	ulong start, end;
 	vu_long *buf, *dummy;
 	ulong iteration_limit = 0;
-	int ret;
+	ulong count = 0;
 	ulong errs = 0;	/* number of errors, or -1 if interrupted */
 	ulong pattern = 0;
 	int iteration;
-#if defined(CONFIG_SYS_ALT_MEMTEST)
-	const int alt_test = 1;
-#else
-	const int alt_test = 0;
-#endif
 
 	start = CONFIG_SYS_MEMTEST_START;
 	end = CONFIG_SYS_MEMTEST_END;
@@ -921,40 +969,34 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
 
 		printf("Iteration: %6d\r", iteration + 1);
 		debug("\n");
-		if (alt_test) {
+		if (IS_ENABLED(CONFIG_SYS_ALT_MEMTEST)) {
 			errs = mem_test_alt(buf, start, end, dummy);
+			if (errs == -1UL)
+				break;
+			count += errs;
+			errs = test_bitflip_comparison(buf,
+						       buf + (end - start) / 2,
+						       (end - start) /
+						       sizeof(unsigned long));
 		} else {
 			errs = mem_test_quick(buf, start, end, pattern,
 					      iteration);
 		}
 		if (errs == -1UL)
 			break;
+		count += errs;
 	}
 
-	/*
+	unmap_sysmem((void *)buf);
-	 * Work-around for eldk-4.2 which gives this warning if we try to
+	unmap_sysmem((void *)dummy);
-	 * case in the unmap_sysmem() call:
-	 * warning: initialization discards qualifiers from pointer target type
-	 */
-	{
-		void *vbuf = (void *)buf;
-		void *vdummy = (void *)dummy;
-
-		unmap_sysmem(vbuf);
-		unmap_sysmem(vdummy);
-	}
 
 	if (errs == -1UL) {
 		/* Memory test was aborted - write a newline to finish off */
 		putc('\n');
-		ret = 1;
-	} else {
-		printf("Tested %d iteration(s) with %lu errors.\n",
-			iteration, errs);
-		ret = errs != 0;
 	}
+	printf("Tested %d iteration(s) with %lu errors.\n", iteration, count);
 
-	return ret;
+	return errs != 0;
 }
 #endif	/* CONFIG_CMD_MEMTEST */
 

cmd/unlz4.c

@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020
+ * FUJITSU COMPUTERTECHNOLOGIES LIMITED. All rights reserved.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <env.h>
+#include <lz4.h>
+
+static int do_unlz4(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	unsigned long src, dst;
+	size_t src_len = ~0UL, dst_len = ~0UL;
+	int ret;
+
+	switch (argc) {
+	case 4:
+		src = simple_strtoul(argv[1], NULL, 16);
+		dst = simple_strtoul(argv[2], NULL, 16);
+		dst_len = simple_strtoul(argv[3], NULL, 16);
+		break;
+	default:
+		return CMD_RET_USAGE;
+	}
+
+	ret = ulz4fn((void *)src, src_len, (void *)dst, &dst_len);
+	if (ret) {
+		printf("Uncompressed err :%d\n", ret);
+		return 1;
+	}
+
+	printf("Uncompressed size: %zd = 0x%zX\n", dst_len, dst_len);
+	env_set_hex("filesize", dst_len);
+
+	return 0;
+}
+
+U_BOOT_CMD(unlz4, 4, 1, do_unlz4,
+	   "lz4 uncompress a memory region",
+	   "srcaddr dstaddr dstsize\n"
+	   "NOTE: Specify the destination size that is sufficiently larger\n"
+	   " than the source size.\n"
+);

common/image.c

@@ -202,6 +202,14 @@ struct table_info {
 	const table_entry_t *table;
 };
 
+static const struct comp_magic_map image_comp[] = {
+	{	IH_COMP_BZIP2,	"bzip2",	{0x42, 0x5a},},
+	{	IH_COMP_GZIP,	"gzip",		{0x1f, 0x8b},},
+	{	IH_COMP_LZMA,	"lzma",		{0x5d, 0x00},},
+	{	IH_COMP_LZO,	"lzo",		{0x89, 0x4c},},
+	{	IH_COMP_NONE,	"none",		{},	},
+};
+
 static const struct table_info table_info[IH_COUNT] = {
 	{ "architecture", IH_ARCH_COUNT, uimage_arch },
 	{ "compression", IH_COMP_COUNT, uimage_comp },
@@ -407,6 +415,21 @@ static void print_decomp_msg(int comp_type, int type, bool is_xip)
 		printf("   Uncompressing %s\n", name);
 }
 
+int image_decomp_type(const unsigned char *buf, ulong len)
+{
+	const struct comp_magic_map *cmagic = image_comp;
+
+	if (len < 2)
+		return -EINVAL;
+
+	for (; cmagic->comp_id > 0; cmagic++) {
+		if (!memcmp(buf, cmagic->magic, 2))
+			break;
+	}
+
+	return cmagic->comp_id;
+}
+
 int image_decomp(int comp, ulong load, ulong image_start, int type,
 		 void *load_buf, void *image_buf, ulong image_len,
 		 uint unc_len, ulong *load_end)

doc/README.SPL

@@ -81,7 +81,7 @@ fdtgrep is also used to remove:
   ('u-boot,dm-pre-reloc', 'u-boot,dm-spl' and 'u-boot,dm-tpl')
 
 All the nodes remaining in the SPL devicetree are bound
-(see driver-model/README.txt).
+(see doc/driver-model/design.rst).
 
 Debugging
 ---------

doc/README.distro

@@ -246,6 +246,18 @@ kernel_addr_r:
 
   A size of 16MB for the kernel is likely adequate.
 
+kernel_comp_addr_r:
+  Optional. This is only required if user wants to boot Linux from a compressed
+  Image(.gz, .bz2, .lzma, .lzo) using booti command. It represents the location
+  in RAM where the compressed Image will be decompressed temporarily. Once the
+  decompression is complete, decompressed data will be moved kernel_addr_r for
+  booting.
+
+kernel_comp_size:
+  Optional. This is only required if user wants to boot Linux from a compressed
+  Image using booti command. It represents the size of the compressed file. The
+  size has to at least the size of loaded image for decompression to succeed.
+
 pxefile_addr_r:
 
   Mandatory. The location in RAM where extlinux.conf will be loaded to prior

doc/README.fdt-control

@@ -182,7 +182,7 @@ U-Boot can be divided into three phases: TPL, SPL and U-Boot proper.
 
 The full device tree is available to U-Boot proper, but normally only a subset
 (or none at all) is available to TPL and SPL. See 'Pre-Relocation Support' and
-'SPL Support' in doc/driver-model/README.txt for more details.
+'SPL Support' in doc/driver-model/design.rst for more details.
 
 
 Using several DTBs in the SPL (CONFIG_SPL_MULTI_DTB)

doc/board/sifive/fu540.rst

@@ -135,6 +135,11 @@ load uImage.
    => setenv netmask 255.255.252.0
    => setenv serverip 10.206.4.143
    => setenv gateway 10.206.4.1
+
+If you want to use a flat kernel image such as Image file
+
+.. code-block:: none
+
    => tftpboot ${kernel_addr_r} /sifive/fu540/Image
    ethernet@10090000: PHY present at 0
    ethernet@10090000: Starting autonegotiation...
@@ -174,6 +179,59 @@ load uImage.
             1.2 MiB/s
    done
    Bytes transferred = 8867100 (874d1c hex)
+
+Or if you want to use a compressed kernel image file such as Image.gz
+
+.. code-block:: none
+
+   => tftpboot ${kernel_addr_r} /sifive/fu540/Image.gz
+   ethernet@10090000: PHY present at 0
+   ethernet@10090000: Starting autonegotiation...
+   ethernet@10090000: Autonegotiation complete
+   ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00)
+   Using ethernet@10090000 device
+   TFTP from server 10.206.4.143; our IP address is 10.206.7.133
+   Filename '/sifive/fu540/Image.gz'.
+   Load address: 0x84000000
+   Loading: #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            #################################################################
+            ##########################################
+            1.2 MiB/s
+   done
+   Bytes transferred = 4809458 (4962f2 hex)
+   =>setenv kernel_comp_addr_r 0x90000000
+   =>setenv kernel_comp_size 0x500000
+
+By this time, correct kernel image is loaded and required enviornment variables
+are set. You can proceed to load the ramdisk and device tree from the tftp server
+as well.
+
+.. code-block:: none
+
    => tftpboot ${ramdisk_addr_r} /sifive/fu540/uRamdisk
    ethernet@10090000: PHY present at 0
    ethernet@10090000: Starting autonegotiation...

drivers/block/ide.c

@@ -231,7 +231,7 @@ unsigned char atapi_issue(int device, unsigned char *ccb, int ccblen,
 		 (unsigned char) ((buflen >> 8) & 0xFF));
 	ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
 
-	ide_outb(device, ATA_COMMAND, ATAPI_CMD_PACKET);
+	ide_outb(device, ATA_COMMAND, ATA_CMD_PACKET);
 	udelay(50);
 
 	mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
@@ -570,7 +570,7 @@ static void ide_ident(struct blk_desc *dev_desc)
 			/*
 			 * Start Ident Command
 			 */
-			ide_outb(device, ATA_COMMAND, ATAPI_CMD_IDENT);
+			ide_outb(device, ATA_COMMAND, ATA_CMD_ID_ATAPI);
 			/*
 			 * Wait for completion - ATAPI devices need more time
 			 * to become ready
@@ -582,7 +582,7 @@ static void ide_ident(struct blk_desc *dev_desc)
 			/*
 			 * Start Ident Command
 			 */
-			ide_outb(device, ATA_COMMAND, ATA_CMD_IDENT);
+			ide_outb(device, ATA_COMMAND, ATA_CMD_ID_ATA);
 
 			/*
 			 * Wait for completion
@@ -966,7 +966,7 @@ ulong ide_read(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
 
 	/* first check if the drive is in Powersaving mode, if yes,
 	 * increase the timeout value */
-	ide_outb(device, ATA_COMMAND, ATA_CMD_CHK_PWR);
+	ide_outb(device, ATA_COMMAND, ATA_CMD_CHK_POWER);
 	udelay(50);
 
 	c = ide_wait(device, IDE_TIME_OUT);	/* can't take over 500 ms */

drivers/i2c/davinci_i2c.c

@@ -8,7 +8,7 @@
  * --------------------------------------------------------
  *
  * NOTE: This driver should be converted to driver model before June 2017.
- * Please see doc/driver-model/i2c-howto.txt for instructions.
+ * Please see doc/driver-model/i2c-howto.rst for instructions.
  */
 
 #include <common.h>

drivers/i2c/kona_i2c.c

@@ -3,7 +3,7 @@
  * Copyright 2013 Broadcom Corporation.
  *
  * NOTE: This driver should be converted to driver model before June 2017.
- * Please see doc/driver-model/i2c-howto.txt for instructions.
+ * Please see doc/driver-model/i2c-howto.rst for instructions.
  */
 
 #include <common.h>

drivers/i2c/sh_i2c.c

@@ -4,7 +4,7 @@
  * Copyright (C) 2011, 2013 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
  *
  * NOTE: This driver should be converted to driver model before June 2017.
- * Please see doc/driver-model/i2c-howto.txt for instructions.
+ * Please see doc/driver-model/i2c-howto.rst for instructions.
  */
 
 #include <common.h>

drivers/i2c/soft_i2c.c

@@ -12,7 +12,7 @@
  * Neil Russell.
  *
  * NOTE: This driver should be converted to driver model before June 2017.
- * Please see doc/driver-model/i2c-howto.txt for instructions.
+ * Please see doc/driver-model/i2c-howto.rst for instructions.
  */
 
 #include <common.h>

drivers/pwm/Kconfig

@@ -23,6 +23,13 @@ config PWM_IMX
 	help
 	  This PWM is found i.MX27 and later i.MX SoCs.
 
+config PWM_MTK
+	bool "Enable support for MediaTek PWM"
+	depends on DM_PWM
+	help
+	  This PWM is found on MT7622, MT7623, and MT7629. It supports a
+	  programmable period and duty cycle.
+
 config PWM_ROCKCHIP
 	bool "Enable support for the Rockchip PWM"
 	depends on DM_PWM

drivers/pwm/Makefile

@@ -12,6 +12,7 @@ obj-$(CONFIG_DM_PWM)		+= pwm-uclass.o
 
 obj-$(CONFIG_PWM_EXYNOS)	+= exynos_pwm.o
 obj-$(CONFIG_PWM_IMX)		+= pwm-imx.o pwm-imx-util.o
+obj-$(CONFIG_PWM_MTK)		+= pwm-mtk.o
 obj-$(CONFIG_PWM_ROCKCHIP)	+= rk_pwm.o
 obj-$(CONFIG_PWM_SANDBOX)	+= sandbox_pwm.o
 obj-$(CONFIG_PWM_TEGRA)		+= tegra_pwm.o

drivers/pwm/pwm-mtk.c

@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 MediaTek Inc. All Rights Reserved.
+ *
+ * Author: Sam Shih <sam.shih@mediatek.com>
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <pwm.h>
+#include <div64.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+
+/* PWM registers and bits definitions */
+#define PWMCON			0x00
+#define PWMHDUR			0x04
+#define PWMLDUR			0x08
+#define PWMGDUR			0x0c
+#define PWMWAVENUM		0x28
+#define PWMDWIDTH		0x2c
+#define PWM45DWIDTH_FIXUP	0x30
+#define PWMTHRES		0x30
+#define PWM45THRES_FIXUP	0x34
+
+#define PWM_CLK_DIV_MAX		7
+#define MAX_PWM_NUM		8
+
+#define NSEC_PER_SEC 1000000000L
+
+static const unsigned int mtk_pwm_reg_offset[] = {
+	0x0010, 0x0050, 0x0090, 0x00d0, 0x0110, 0x0150, 0x0190, 0x0220
+};
+
+struct mtk_pwm_soc {
+	unsigned int num_pwms;
+	bool pwm45_fixup;
+};
+
+struct mtk_pwm_priv {
+	void __iomem *base;
+	struct clk top_clk;
+	struct clk main_clk;
+	struct clk pwm_clks[MAX_PWM_NUM];
+	const struct mtk_pwm_soc *soc;
+};
+
+static void mtk_pwm_w32(struct udevice *dev, uint channel, uint reg, uint val)
+{
+	struct mtk_pwm_priv *priv = dev_get_priv(dev);
+	u32 offset = mtk_pwm_reg_offset[channel];
+
+	writel(val, priv->base + offset + reg);
+}
+
+static int mtk_pwm_set_config(struct udevice *dev, uint channel,
+			      uint period_ns, uint duty_ns)
+{
+	struct mtk_pwm_priv *priv = dev_get_priv(dev);
+	u32 clkdiv = 0, clksel = 0, cnt_period, cnt_duty,
+	    reg_width = PWMDWIDTH, reg_thres = PWMTHRES;
+	u64 resolution;
+	int ret = 0;
+
+	clk_enable(&priv->top_clk);
+	clk_enable(&priv->main_clk);
+	/* Using resolution in picosecond gets accuracy higher */
+	resolution = (u64)NSEC_PER_SEC * 1000;
+	do_div(resolution, clk_get_rate(&priv->pwm_clks[channel]));
+	cnt_period = DIV_ROUND_CLOSEST_ULL((u64)period_ns * 1000, resolution);
+	while (cnt_period > 8191) {
+		resolution *= 2;
+		clkdiv++;
+		cnt_period = DIV_ROUND_CLOSEST_ULL((u64)period_ns * 1000,
+						   resolution);
+		if (clkdiv > PWM_CLK_DIV_MAX && clksel == 0) {
+			clksel = 1;
+			clkdiv = 0;
+			resolution = (u64)NSEC_PER_SEC * 1000 * 1625;
+			do_div(resolution,
+			       clk_get_rate(&priv->pwm_clks[channel]));
+			cnt_period = DIV_ROUND_CLOSEST_ULL(
+					(u64)period_ns * 1000, resolution);
+			clk_enable(&priv->pwm_clks[channel]);
+		}
+	}
+	if (clkdiv > PWM_CLK_DIV_MAX && clksel == 1) {
+		printf("pwm period %u not supported\n", period_ns);
+		return -EINVAL;
+	}
+	if (priv->soc->pwm45_fixup && channel > 2) {
+		/*
+		 * PWM[4,5] has distinct offset for PWMDWIDTH and PWMTHRES
+		 * from the other PWMs on MT7623.
+		 */
+		reg_width = PWM45DWIDTH_FIXUP;
+		reg_thres = PWM45THRES_FIXUP;
+	}
+	cnt_duty = DIV_ROUND_CLOSEST_ULL((u64)duty_ns * 1000, resolution);
+	if (clksel == 1)
+		mtk_pwm_w32(dev, channel, PWMCON, BIT(15) | BIT(3) | clkdiv);
+	else
+		mtk_pwm_w32(dev, channel, PWMCON, BIT(15) | clkdiv);
+	mtk_pwm_w32(dev, channel, reg_width, cnt_period);
+	mtk_pwm_w32(dev, channel, reg_thres, cnt_duty);
+
+	return ret;
+};
+
+static int mtk_pwm_set_enable(struct udevice *dev, uint channel, bool enable)
+{
+	struct mtk_pwm_priv *priv = dev_get_priv(dev);
+	u32 val = 0;
+
+	val = readl(priv->base);
+	if (enable)
+		val |= BIT(channel);
+	else
+		val &= ~BIT(channel);
+	writel(val, priv->base);
+
+	return 0;
+};
+
+static int mtk_pwm_probe(struct udevice *dev)
+{
+	struct mtk_pwm_priv *priv = dev_get_priv(dev);
+	int ret = 0;
+	int i;
+
+	priv->soc = (struct mtk_pwm_soc *)dev_get_driver_data(dev);
+	priv->base = (void __iomem *)devfdt_get_addr(dev);
+	if (!priv->base)
+		return -EINVAL;
+	ret = clk_get_by_name(dev, "top", &priv->top_clk);
+	if (ret < 0)
+		return ret;
+	ret = clk_get_by_name(dev, "main", &priv->main_clk);
+	if (ret < 0)
+		return ret;
+	for (i = 0; i < priv->soc->num_pwms; i++) {
+		char name[8];
+
+		snprintf(name, sizeof(name), "pwm%d", i + 1);
+		ret = clk_get_by_name(dev, name, &priv->pwm_clks[i]);
+		if (ret < 0)
+			return ret;
+	}
+
+	return ret;
+}
+
+static const struct pwm_ops mtk_pwm_ops = {
+	.set_config	= mtk_pwm_set_config,
+	.set_enable	= mtk_pwm_set_enable,
+};
+
+static const struct mtk_pwm_soc mt7622_data = {
+	.num_pwms = 6,
+	.pwm45_fixup = false,
+};
+
+static const struct mtk_pwm_soc mt7623_data = {
+	.num_pwms = 5,
+	.pwm45_fixup = true,
+};
+
+static const struct mtk_pwm_soc mt7629_data = {
+	.num_pwms = 1,
+	.pwm45_fixup = false,
+};
+
+static const struct udevice_id mtk_pwm_ids[] = {
+	{ .compatible = "mediatek,mt7622-pwm", .data = (ulong)&mt7622_data },
+	{ .compatible = "mediatek,mt7623-pwm", .data = (ulong)&mt7623_data },
+	{ .compatible = "mediatek,mt7629-pwm", .data = (ulong)&mt7629_data },
+	{ }
+};
+
+U_BOOT_DRIVER(mtk_pwm) = {
+	.name = "mtk_pwm",
+	.id = UCLASS_PWM,
+	.of_match = mtk_pwm_ids,
+	.ops = &mtk_pwm_ops,
+	.probe = mtk_pwm_probe,
+	.priv_auto_alloc_size = sizeof(struct mtk_pwm_priv),
+};

drivers/tee/optee/core.c

@@ -512,7 +512,7 @@ static bool is_optee_api(optee_invoke_fn *invoke_fn)
 	       res.a2 == OPTEE_MSG_UID_2 && res.a3 == OPTEE_MSG_UID_3;
 }
 
-static void print_os_revision(optee_invoke_fn *invoke_fn)
+static void print_os_revision(struct udevice *dev, optee_invoke_fn *invoke_fn)
 {
 	union {
 		struct arm_smccc_res smccc;
@@ -527,11 +527,12 @@ static void print_os_revision(optee_invoke_fn *invoke_fn)
 		  &res.smccc);
 
 	if (res.result.build_id)
-		debug("OP-TEE revision %lu.%lu (%08lx)\n", res.result.major,
+		dev_info(dev, "OP-TEE: revision %lu.%lu (%08lx)\n",
-		      res.result.minor, res.result.build_id);
+			 res.result.major, res.result.minor,
+			 res.result.build_id);
 	else
-		debug("OP-TEE revision %lu.%lu\n", res.result.major,
+		dev_info(dev, "OP-TEE: revision %lu.%lu\n",
-		      res.result.minor);
+			 res.result.major, res.result.minor);
 }
 
 static bool api_revision_is_compatible(optee_invoke_fn *invoke_fn)
@@ -626,7 +627,7 @@ static int optee_probe(struct udevice *dev)
 		return -ENOENT;
 	}
 
-	print_os_revision(pdata->invoke_fn);
+	print_os_revision(dev, pdata->invoke_fn);
 
 	if (!api_revision_is_compatible(pdata->invoke_fn)) {
 		debug("%s: OP-TEE api revision mismatch\n", __func__);

env/nvram.c

@@ -38,7 +38,7 @@ DECLARE_GLOBAL_DATA_PTR;
 extern void *nvram_read(void *dest, const long src, size_t count);
 extern void nvram_write(long dest, const void *src, size_t count);
 #else
-env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
+static env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
 #endif
 
 #ifdef CONFIG_SYS_NVRAM_ACCESS_ROUTINE

env/remote.c

@@ -12,9 +12,9 @@
 #include <u-boot/crc.h>
 
 #ifdef ENV_IS_EMBEDDED
-env_t *env_ptr = &environment;
+static env_t *env_ptr = &environment;
 #else /* ! ENV_IS_EMBEDDED */
-env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
+static env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
 #endif /* ENV_IS_EMBEDDED */
 
 DECLARE_GLOBAL_DATA_PTR;

fs/btrfs/extent-io.c

@@ -78,6 +78,12 @@ u64 btrfs_read_extent_reg(struct btrfs_path *path,
 	if (size > dlen - offset)
 		size = dlen - offset;
 
+	/* sparse extent */
+	if (extent->disk_bytenr == 0) {
+		memset(out, 0, size);
+		return size;
+	}
+
 	physical = btrfs_map_logical_to_physical(extent->disk_bytenr);
 	if (physical == -1ULL)
 		return -1ULL;

include/ata.h

@@ -6,11 +6,8 @@
 
 /*
  * Most of the following information was derived from the document
- * "Information Technology - AT Attachment-3 Interface (ATA-3)"
+ * "Information Technology - AT Attachment-3 Interface (ATA-3)",
- * which can be found at:
+ * ANSI X3.298-1997.
- * http://www.dt.wdc.com/ata/ata-3/ata3r5v.zip
- * ftp://poctok.iae.nsk.su/pub/asm/Documents/IDE/ATA3R5V.ZIP
- * ftp://ftp.fee.vutbr.cz/pub/doc/io/ata/ata-3/ata3r5v.zip
  */
 
 #ifndef	_ATA_H
@@ -70,43 +67,9 @@
 #endif /* ATA_DEVICE */
 #define ATA_LBA		0xE0
 
-/*
- * ATA Commands (only mandatory commands listed here)
- */
-#define ATA_CMD_READ	0x20	/* Read Sectors (with retries)	*/
-#define ATA_CMD_READN	0x21	/* Read Sectors ( no  retries)	*/
-#define ATA_CMD_WRITE	0x30	/* Write Sectores (with retries)*/
-#define ATA_CMD_WRITEN	0x31	/* Write Sectors  ( no  retries)*/
-#define ATA_CMD_VRFY	0x40	/* Read Verify  (with retries)	*/
-#define ATA_CMD_VRFYN	0x41	/* Read verify  ( no  retries)	*/
-#define ATA_CMD_SEEK	0x70	/* Seek				*/
-#define ATA_CMD_DIAG	0x90	/* Execute Device Diagnostic	*/
-#define ATA_CMD_INIT	0x91	/* Initialize Device Parameters	*/
-#define ATA_CMD_RD_MULT	0xC4	/* Read Multiple		*/
-#define ATA_CMD_WR_MULT	0xC5	/* Write Multiple		*/
-#define ATA_CMD_SETMULT	0xC6	/* Set Multiple Mode		*/
-#define ATA_CMD_RD_DMA	0xC8	/* Read DMA (with retries)	*/
-#define ATA_CMD_RD_DMAN	0xC9	/* Read DMS ( no  retries)	*/
-#define ATA_CMD_WR_DMA	0xCA	/* Write DMA (with retries)	*/
-#define ATA_CMD_WR_DMAN	0xCB	/* Write DMA ( no  retires)	*/
-#define ATA_CMD_IDENT	0xEC	/* Identify Device		*/
-#define ATA_CMD_SETF	0xEF	/* Set Features			*/
-#define ATA_CMD_CHK_PWR	0xE5	/* Check Power Mode		*/
-
-#define ATA_CMD_READ_EXT 0x24	/* Read Sectors (with retries)	with 48bit addressing */
-#define ATA_CMD_WRITE_EXT	0x34	/* Write Sectores (with retries) with 48bit addressing */
-#define ATA_CMD_VRFY_EXT	0x42	/* Read Verify	(with retries)	with 48bit addressing */
-
-#define ATA_CMD_FLUSH 0xE7 /* Flush drive cache */
-#define ATA_CMD_FLUSH_EXT 0xEA /* Flush drive cache, with 48bit addressing */
-
 /*
  * ATAPI Commands
  */
-#define ATAPI_CMD_IDENT 0xA1 /* Identify AT Atachment Packed Interface Device */
-#define ATAPI_CMD_PACKET 0xA0 /* Packed Command */
-
-
 #define ATAPI_CMD_INQUIRY 0x12
 #define ATAPI_CMD_REQ_SENSE 0x03
 #define ATAPI_CMD_READ_CAP 0x25

include/image.h

@@ -452,6 +452,15 @@ typedef struct table_entry {
 	char	*lname;		/* long (output) name to print for messages */
 } table_entry_t;
 
+/*
+ * Compression type and magic number mapping table.
+ */
+struct comp_magic_map {
+	int		comp_id;
+	const char	*name;
+	unsigned char	magic[2];
+};
+
 /*
  * get_table_entry_id() scans the translation table trying to find an
  * entry that matches the given short name. If a matching entry is
@@ -868,6 +877,18 @@ static inline int image_check_target_arch(const image_header_t *hdr)
 }
 #endif /* USE_HOSTCC */
 
+/**
+ * image_decomp_type() - Find out compression type of an image
+ *
+ * @buf:	Address in U-Boot memory where image is loaded.
+ * @len:	Length of the compressed image.
+ * @return	compression type or IH_COMP_NONE if not compressed.
+ *
+ * Note: Only following compression types are supported now.
+ * lzo, lzma, gzip, bzip2
+ */
+int image_decomp_type(const unsigned char *buf, ulong len);
+
 /**
  * image_decomp() - decompress an image
  *

include/libata.h

@@ -133,49 +133,49 @@ enum {
 	ATA_REG_IRQ		= ATA_REG_NSECT,
 
 	/* ATA device commands */
-	ATA_CMD_DEV_RESET	= 0x08, /* ATAPI device reset */
+	ATA_CMD_DEV_RESET	    = 0x08, /* ATAPI device reset */
-	ATA_CMD_CHK_POWER	= 0xE5, /* check power mode */
+	ATA_CMD_PIO_READ	    = 0x20, /* Read sectors with retry */
-	ATA_CMD_STANDBY		= 0xE2, /* place in standby power mode */
+	ATA_CMD_PIO_READ_EXT	    = 0x24,
-	ATA_CMD_IDLE		= 0xE3, /* place in idle power mode */
+	ATA_CMD_READ_EXT	    = 0x25,
-	ATA_CMD_EDD		= 0x90,	/* execute device diagnostic */
-	ATA_CMD_FLUSH		= 0xE7,
-	ATA_CMD_FLUSH_EXT	= 0xEA,
-	ATA_CMD_ID_ATA		= 0xEC,
-	ATA_CMD_ID_ATAPI	= 0xA1,
-	ATA_CMD_READ		= 0xC8,
-	ATA_CMD_READ_EXT	= 0x25,
-	ATA_CMD_WRITE		= 0xCA,
-	ATA_CMD_WRITE_EXT	= 0x35,
-	ATA_CMD_WRITE_FUA_EXT	= 0x3D,
-	ATA_CMD_FPDMA_READ	= 0x60,
-	ATA_CMD_FPDMA_WRITE	= 0x61,
-	ATA_CMD_PIO_READ	= 0x20,
-	ATA_CMD_PIO_READ_EXT	= 0x24,
-	ATA_CMD_PIO_WRITE	= 0x30,
-	ATA_CMD_PIO_WRITE_EXT	= 0x34,
-	ATA_CMD_READ_MULTI	= 0xC4,
-	ATA_CMD_READ_MULTI_EXT	= 0x29,
-	ATA_CMD_WRITE_MULTI	= 0xC5,
-	ATA_CMD_WRITE_MULTI_EXT	= 0x39,
-	ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
-	ATA_CMD_SET_FEATURES	= 0xEF,
-	ATA_CMD_SET_MULTI	= 0xC6,
-	ATA_CMD_PACKET		= 0xA0,
-	ATA_CMD_VERIFY		= 0x40,
-	ATA_CMD_VERIFY_EXT	= 0x42,
-	ATA_CMD_STANDBYNOW1	= 0xE0,
-	ATA_CMD_IDLEIMMEDIATE	= 0xE1,
-	ATA_CMD_SLEEP		= 0xE6,
-	ATA_CMD_INIT_DEV_PARAMS	= 0x91,
-	ATA_CMD_READ_NATIVE_MAX	= 0xF8,
 	ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
-	ATA_CMD_SET_MAX		= 0xF9,
+	ATA_CMD_READ_MULTI_EXT	    = 0x29,
-	ATA_CMD_SET_MAX_EXT	= 0x37,
+	ATA_CMD_READ_LOG_EXT	    = 0x2f,
-	ATA_CMD_READ_LOG_EXT	= 0x2f,
+	ATA_CMD_PIO_WRITE	    = 0x30, /* write sectors with retry */
-	ATA_CMD_PMP_READ	= 0xE4,
+	ATA_CMD_PIO_WRITE_EXT	    = 0x34,
-	ATA_CMD_PMP_WRITE	= 0xE8,
+	ATA_CMD_WRITE_EXT	    = 0x35,
-	ATA_CMD_CONF_OVERLAY	= 0xB1,
+	ATA_CMD_SET_MAX_EXT	    = 0x37,
-	ATA_CMD_SEC_FREEZE_LOCK	= 0xF5,
+	ATA_CMD_WRITE_MULTI_EXT	    = 0x39,
+	ATA_CMD_WRITE_FUA_EXT	    = 0x3D,
+	ATA_CMD_VERIFY		    = 0x40, /* read verify sectors with retry */
+	ATA_CMD_VERIFY_EXT	    = 0x42,
+	ATA_CMD_FPDMA_READ	    = 0x60,
+	ATA_CMD_FPDMA_WRITE	    = 0x61,
+	ATA_CMD_EDD		    = 0x90, /* execute device diagnostic */
+	ATA_CMD_INIT_DEV_PARAMS	    = 0x91, /* initialize device parameters */
+	ATA_CMD_PACKET		    = 0xA0, /* ATAPI packet */
+	ATA_CMD_ID_ATAPI	    = 0xA1, /* ATAPI identify device */
+	ATA_CMD_CONF_OVERLAY	    = 0xB1,
+	ATA_CMD_READ_MULTI	    = 0xC4, /* read multiple */
+	ATA_CMD_WRITE_MULTI	    = 0xC5, /* write multiple */
+	ATA_CMD_SET_MULTI	    = 0xC6, /* set multiple mode */
+	ATA_CMD_READ		    = 0xC8, /* read DMA with retry */
+	ATA_CMD_WRITE		    = 0xCA, /* write DMA with retry */
+	ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
+	ATA_CMD_STANDBYNOW1	    = 0xE0, /* standby immediate */
+	ATA_CMD_IDLEIMMEDIATE	    = 0xE1, /* idle immediate */
+	ATA_CMD_STANDBY		    = 0xE2, /* place in standby power mode */
+	ATA_CMD_IDLE		    = 0xE3, /* place in idle power mode */
+	ATA_CMD_PMP_READ	    = 0xE4, /* read buffer */
+	ATA_CMD_CHK_POWER	    = 0xE5, /* check power mode */
+	ATA_CMD_SLEEP		    = 0xE6, /* sleep */
+	ATA_CMD_FLUSH		    = 0xE7,
+	ATA_CMD_PMP_WRITE	    = 0xE8, /* write buffer */
+	ATA_CMD_FLUSH_EXT	    = 0xEA,
+	ATA_CMD_ID_ATA		    = 0xEC, /* identify device */
+	ATA_CMD_SET_FEATURES	    = 0xEF, /* set features */
+	ATA_CMD_SEC_FREEZE_LOCK	    = 0xF5, /* security freeze */
+	ATA_CMD_READ_NATIVE_MAX	    = 0xF8,
+	ATA_CMD_SET_MAX		    = 0xF9,
 
 	/* READ_LOG_EXT pages */
 	ATA_LOG_SATA_NCQ	= 0x10,

lib/Kconfig

@@ -409,6 +409,11 @@ config GZIP
 	help
 	  This enables support for GZIP compression algorithm.
 
+config BZIP2
+	bool "Enable bzip2 decompression support"
+	help
+	  This enables support for BZIP2 compression algorithm.
+
 config ZLIB
 	bool
 	default y

scripts/documentation-file-ref-check

@@ -0,0 +1,226 @@
+#!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0
+#
+# Treewide grep for references to files under doc, and report
+# non-existing files in stderr.
+
+use warnings;
+use strict;
+use Getopt::Long qw(:config no_auto_abbrev);
+
+# NOTE: only add things here when the file was gone, but the text wants
+# to mention a past documentation file, for example, to give credits for
+# the original work.
+my %false_positives = (
+);
+
+my $scriptname = $0;
+$scriptname =~ s,.*/([^/]+/),$1,;
+
+# Parse arguments
+my $help = 0;
+my $fix = 0;
+my $warn = 0;
+
+if (! -d ".git") {
+	printf "Warning: can't check if file exists, as this is not a git tree";
+	exit 0;
+}
+
+GetOptions(
+	'fix' => \$fix,
+	'warn' => \$warn,
+	'h|help|usage' => \$help,
+);
+
+if ($help != 0) {
+    print "$scriptname [--help] [--fix]\n";
+    exit -1;
+}
+
+# Step 1: find broken references
+print "Finding broken references. This may take a while...  " if ($fix);
+
+my %broken_ref;
+
+my $doc_fix = 0;
+
+open IN, "git grep ':doc:\`' doc/|"
+     or die "Failed to run git grep";
+while (<IN>) {
+	next if (!m,^([^:]+):.*\:doc\:\`([^\`]+)\`,);
+
+	my $d = $1;
+	my $doc_ref = $2;
+
+	my $f = $doc_ref;
+
+	$d =~ s,(.*/).*,$1,;
+	$f =~ s,.*\<([^\>]+)\>,$1,;
+
+	$f ="$d$f.rst";
+
+	next if (grep -e, glob("$f"));
+
+	if ($fix && !$doc_fix) {
+		print STDERR "\nWARNING: Currently, can't fix broken :doc:`` fields\n";
+	}
+	$doc_fix++;
+
+	print STDERR "$f: :doc:`$doc_ref`\n";
+}
+close IN;
+
+open IN, "git grep 'doc/'|"
+     or die "Failed to run git grep";
+while (<IN>) {
+	next if (!m/^([^:]+):(.*)/);
+
+	my $f = $1;
+	my $ln = $2;
+
+	# On linux-next, discard the Next/ directory
+	next if ($f =~ m,^Next/,);
+
+	# Makefiles and scripts contain nasty expressions to parse docs
+	next if ($f =~ m/Makefile/ || $f =~ m/\.sh$/);
+
+	# Skip this script
+	next if ($f eq $scriptname);
+
+	# Ignore the dir where documentation will be built
+	next if ($ln =~ m,\b(\S*)doc/output,);
+
+	if ($ln =~ m,\b(\S*)(doc/[A-Za-z0-9\_\.\,\~/\*\[\]\?+-]*)(.*),) {
+		my $prefix = $1;
+		my $ref = $2;
+		my $base = $2;
+		my $extra = $3;
+
+		# some file references are like:
+		# /usr/src/linux/doc/DMA-{API,mapping}.txt
+		# For now, ignore them
+		next if ($extra =~ m/^{/);
+
+		# Remove footnotes at the end like:
+		# doc/devicetree/dt-object-internal.txt[1]
+		$ref =~ s/(txt|rst)\[\d+]$/$1/;
+
+		# Remove ending ']' without any '['
+		$ref =~ s/\].*// if (!($ref =~ m/\[/));
+
+		# Remove puntuation marks at the end
+		$ref =~ s/[\,\.]+$//;
+
+		my $fulref = "$prefix$ref";
+
+		$fulref =~ s/^(\<file|ref)://;
+		$fulref =~ s/^[\'\`]+//;
+		$fulref =~ s,^\$\(.*\)/,,;
+		$base =~ s,.*/,,;
+
+		# Remove URL false-positives
+		next if ($fulref =~ m/^http/);
+
+		# Check if exists, evaluating wildcards
+		next if (grep -e, glob("$ref $fulref"));
+
+		# Accept relative doc patches for tools/
+		if ($f =~ m/tools/) {
+			my $path = $f;
+			$path =~ s,(.*)/.*,$1,;
+			next if (grep -e, glob("$path/$ref $path/../$ref $path/$fulref"));
+		}
+
+		# Discard known false-positives
+		if (defined($false_positives{$f})) {
+			next if ($false_positives{$f} eq $fulref);
+		}
+
+		if ($fix) {
+			if (!($ref =~ m/(scripts|Kconfig|Kbuild)/)) {
+				$broken_ref{$ref}++;
+			}
+		} elsif ($warn) {
+			print STDERR "Warning: $f references a file that doesn't exist: $fulref\n";
+		} else {
+			print STDERR "$f: $fulref\n";
+		}
+	}
+}
+close IN;
+
+exit 0 if (!$fix);
+
+# Step 2: Seek for file name alternatives
+print "Auto-fixing broken references. Please double-check the results\n";
+
+foreach my $ref (keys %broken_ref) {
+	my $new =$ref;
+
+	my $basedir = ".";
+	# On translations, only seek inside the translations directory
+	$basedir  = $1 if ($ref =~ m,(doc/translations/[^/]+),);
+
+	# get just the basename
+	$new =~ s,.*/,,;
+
+	my $f="";
+
+	# usual reason for breakage: DT file moved around
+	if ($ref =~ /devicetree/) {
+		# usual reason for breakage: DT file renamed to .yaml
+		if (!$f) {
+			my $new_ref = $ref;
+			$new_ref =~ s/\.txt$/.yaml/;
+			$f=$new_ref if (-f $new_ref);
+		}
+
+		if (!$f) {
+			my $search = $new;
+			$search =~ s,^.*/,,;
+			$f = qx(find doc/device-tree-bindings/ -iname "*$search*") if ($search);
+			if (!$f) {
+				# Manufacturer name may have changed
+				$search =~ s/^.*,//;
+				$f = qx(find doc/device-tree-bindings/ -iname "*$search*") if ($search);
+			}
+		}
+	}
+
+	# usual reason for breakage: file renamed to .rst
+	if (!$f) {
+		$new =~ s/\.txt$/.rst/;
+		$f=qx(find $basedir -iname $new) if ($new);
+	}
+
+	# usual reason for breakage: use dash or underline
+	if (!$f) {
+		$new =~ s/[-_]/[-_]/g;
+		$f=qx(find $basedir -iname $new) if ($new);
+	}
+
+	# Wild guess: seek for the same name on another place
+	if (!$f) {
+		$f = qx(find $basedir -iname $new) if ($new);
+	}
+
+	my @find = split /\s+/, $f;
+
+	if (!$f) {
+		print STDERR "ERROR: Didn't find a replacement for $ref\n";
+	} elsif (scalar(@find) > 1) {
+		print STDERR "WARNING: Won't auto-replace, as found multiple files close to $ref:\n";
+		foreach my $j (@find) {
+			$j =~ s,^./,,;
+			print STDERR "    $j\n";
+		}
+	} else {
+		$f = $find[0];
+		$f =~ s,^./,,;
+		print "INFO: Replacing $ref to $f\n";
+		foreach my $j (qx(git grep -l $ref)) {
+			qx(sed "s\@$ref\@$f\@g" -i $j);
+		}
+	}
+}

tools/dtoc/dtb_platdata.py

@@ -423,7 +423,7 @@ class DtbPlatdata(object):
 
         This writes out the body of a header file consisting of structure
         definitions for node in self._valid_nodes. See the documentation in
-        README.of-plat for more information.
+        doc/driver-model/of-plat.rst for more information.
         """
         self.out_header()
         self.out('#include <stdbool.h>\n')
@@ -527,7 +527,7 @@ class DtbPlatdata(object):
         U_BOOT_DEVICE() declarations for each valid node. Where a node has
         multiple compatible strings, a #define is used to make them equivalent.
 
-        See the documentation in doc/driver-model/of-plat.txt for more
+        See the documentation in doc/driver-model/of-plat.rst for more
         information.
         """
         self.out_header()

tools/dtoc/dtoc.py

@@ -22,7 +22,7 @@ Dtoc produces two output files:
 This tool is used in U-Boot to provide device tree data to SPL without
 increasing the code size of SPL. This supports the CONFIG_SPL_OF_PLATDATA
 options. For more information about the use of this options and tool please
-see doc/driver-model/of-plat.txt
+see doc/driver-model/of-plat.rst
 """
 
 from __future__ import print_function

tools/fit_image.c

@@ -642,7 +642,7 @@ static int copyfile(const char *src, const char *dst)
 		goto out;
 	}
 
-	fd_dst = open(dst, O_WRONLY | O_CREAT, 0700);
+	fd_dst = open(dst, O_WRONLY | O_CREAT, 0666);
 	if (fd_dst < 0) {
 		printf("Can't open file %s (%s)\n", dst, strerror(errno));
 		goto out;