Merge branch 'master' of git://git.denx.de/u-boot-blackfin
diff --git a/README b/README
index d8cb394..0070694 100644
--- a/README
+++ b/README
@@ -842,7 +842,8 @@
CONFIG_CMD_I2C * I2C serial bus support
CONFIG_CMD_IDE * IDE harddisk support
CONFIG_CMD_IMI iminfo
- CONFIG_CMD_IMLS List all found images
+ CONFIG_CMD_IMLS List all images found in NOR flash
+ CONFIG_CMD_IMLS_NAND List all images found in NAND flash
CONFIG_CMD_IMMAP * IMMR dump support
CONFIG_CMD_IMPORTENV * import an environment
CONFIG_CMD_INI * import data from an ini file into the env
diff --git a/board/technexion/twister/twister.c b/board/technexion/twister/twister.c
index c9eea9b..fa0ace0 100644
--- a/board/technexion/twister/twister.c
+++ b/board/technexion/twister/twister.c
@@ -165,10 +165,10 @@
int spl_start_uboot(void)
{
int val = 0;
- if (!gpio_request(CONFIG_SPL_OS_BOOT_KEY, "U-Boot key")) {
- gpio_direction_input(CONFIG_SPL_OS_BOOT_KEY);
- val = gpio_get_value(CONFIG_SPL_OS_BOOT_KEY);
- gpio_free(CONFIG_SPL_OS_BOOT_KEY);
+ if (!gpio_request(SPL_OS_BOOT_KEY, "U-Boot key")) {
+ gpio_direction_input(SPL_OS_BOOT_KEY);
+ val = gpio_get_value(SPL_OS_BOOT_KEY);
+ gpio_free(SPL_OS_BOOT_KEY);
}
return val;
}
diff --git a/board/technexion/twister/twister.h b/board/technexion/twister/twister.h
index a2051c0..cff479c 100644
--- a/board/technexion/twister/twister.h
+++ b/board/technexion/twister/twister.h
@@ -38,6 +38,8 @@
#define XR16L2751_UART1_BASE 0x21000000
#define XR16L2751_UART2_BASE 0x23000000
+/* GPIO used to select between U-Boot and kernel */
+#define SPL_OS_BOOT_KEY 55
/*
* IEN - Input Enable
diff --git a/board/timll/devkit8000/devkit8000.c b/board/timll/devkit8000/devkit8000.c
index 85685ee..b88d978 100644
--- a/board/timll/devkit8000/devkit8000.c
+++ b/board/timll/devkit8000/devkit8000.c
@@ -172,10 +172,10 @@
int spl_start_uboot(void)
{
int val = 0;
- if (!gpio_request(CONFIG_SPL_OS_BOOT_KEY, "U-Boot key")) {
- gpio_direction_input(CONFIG_SPL_OS_BOOT_KEY);
- val = gpio_get_value(CONFIG_SPL_OS_BOOT_KEY);
- gpio_free(CONFIG_SPL_OS_BOOT_KEY);
+ if (!gpio_request(SPL_OS_BOOT_KEY, "U-Boot key")) {
+ gpio_direction_input(SPL_OS_BOOT_KEY);
+ val = gpio_get_value(SPL_OS_BOOT_KEY);
+ gpio_free(SPL_OS_BOOT_KEY);
}
return !val;
}
diff --git a/board/timll/devkit8000/devkit8000.h b/board/timll/devkit8000/devkit8000.h
index aa69e6c..c1965e2 100644
--- a/board/timll/devkit8000/devkit8000.h
+++ b/board/timll/devkit8000/devkit8000.h
@@ -32,6 +32,9 @@
"NAND",
};
+/* GPIO used to select between U-Boot and kernel */
+#define SPL_OS_BOOT_KEY 26
+
/*
* IEN - Input Enable
* IDIS - Input Disable
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index f0338ba..1312a0d 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -79,9 +79,15 @@
#include <flash.h>
#include <mtd/cfi_flash.h>
extern flash_info_t flash_info[]; /* info for FLASH chips */
+#endif
+
+#if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
#endif
+#include <linux/err.h>
+#include <nand.h>
+
#ifdef CONFIG_SILENT_CONSOLE
static void fixup_silent_linux(void);
#endif
@@ -1192,7 +1198,7 @@
/* imls - list all images found in flash */
/*******************************************************************/
#if defined(CONFIG_CMD_IMLS)
-static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+static int do_imls_nor(void)
{
flash_info_t *info;
int i, j;
@@ -1241,7 +1247,162 @@
}
next_bank: ;
}
+ return 0;
+}
+#endif
+
+#if defined(CONFIG_CMD_IMLS_NAND)
+static int nand_imls_legacyimage(nand_info_t *nand, int nand_dev, loff_t off,
+ size_t len)
+{
+ void *imgdata;
+ int ret;
+
+ imgdata = malloc(len);
+ if (!imgdata) {
+ printf("May be a Legacy Image at NAND device %d offset %08llX:\n",
+ nand_dev, off);
+ printf(" Low memory(cannot allocate memory for image)\n");
+ return -ENOMEM;
+ }
+
+ ret = nand_read_skip_bad(nand, off, &len,
+ imgdata);
+ if (ret < 0 && ret != -EUCLEAN) {
+ free(imgdata);
+ return ret;
+ }
+
+ if (!image_check_hcrc(imgdata)) {
+ free(imgdata);
+ return 0;
+ }
+
+ printf("Legacy Image at NAND device %d offset %08llX:\n",
+ nand_dev, off);
+ image_print_contents(imgdata);
+
+ puts(" Verifying Checksum ... ");
+ if (!image_check_dcrc(imgdata))
+ puts("Bad Data CRC\n");
+ else
+ puts("OK\n");
+
+ free(imgdata);
+
+ return 0;
+}
+
+static int nand_imls_fitimage(nand_info_t *nand, int nand_dev, loff_t off,
+ size_t len)
+{
+ void *imgdata;
+ int ret;
+
+ imgdata = malloc(len);
+ if (!imgdata) {
+ printf("May be a FIT Image at NAND device %d offset %08llX:\n",
+ nand_dev, off);
+ printf(" Low memory(cannot allocate memory for image)\n");
+ return -ENOMEM;
+ }
+ ret = nand_read_skip_bad(nand, off, &len,
+ imgdata);
+ if (ret < 0 && ret != -EUCLEAN) {
+ free(imgdata);
+ return ret;
+ }
+
+ if (!fit_check_format(imgdata)) {
+ free(imgdata);
+ return 0;
+ }
+
+ printf("FIT Image at NAND device %d offset %08llX:\n", nand_dev, off);
+
+ fit_print_contents(imgdata);
+ free(imgdata);
+
+ return 0;
+}
+
+static int do_imls_nand(void)
+{
+ nand_info_t *nand;
+ int nand_dev = nand_curr_device;
+ size_t len;
+ loff_t off;
+ u32 buffer[16];
+
+ if (nand_dev < 0 || nand_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
+ puts("\nNo NAND devices available\n");
+ return -ENODEV;
+ }
+
+ printf("\n");
+
+ for (nand_dev = 0; nand_dev < CONFIG_SYS_MAX_NAND_DEVICE; nand_dev++) {
+ nand = &nand_info[nand_dev];
+ if (!nand->name || !nand->size)
+ continue;
+
+ for (off = 0; off < nand->size; off += nand->erasesize) {
+ const image_header_t *header;
+ int ret;
+
+ if (nand_block_isbad(nand, off))
+ continue;
+
+ len = sizeof(buffer);
+
+ ret = nand_read(nand, off, &len, (u8 *)buffer);
+ if (ret < 0 && ret != -EUCLEAN) {
+ printf("NAND read error %d at offset %08llX\n",
+ ret, off);
+ continue;
+ }
+
+ switch (genimg_get_format(buffer)) {
+ case IMAGE_FORMAT_LEGACY:
+ header = (const image_header_t *)buffer;
+
+ len = image_get_image_size(header);
+ nand_imls_legacyimage(nand, nand_dev, off, len);
+ break;
+#if defined(CONFIG_FIT)
+ case IMAGE_FORMAT_FIT:
+ len = fit_get_size(buffer);
+ nand_imls_fitimage(nand, nand_dev, off, len);
+ break;
+#endif
+ }
+ }
+ }
+
+ return 0;
+}
+#endif
+
+#if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
+static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ int ret_nor = 0, ret_nand = 0;
+
+#if defined(CONFIG_CMD_IMLS)
+ ret_nor = do_imls_nor();
+#endif
+
+#if defined(CONFIG_CMD_IMLS_NAND)
+ ret_nand = do_imls_nand();
+#endif
+
+ if (ret_nor)
+ return ret_nor;
+
+ if (ret_nand)
+ return ret_nand;
+
return (0);
}
@@ -1249,8 +1410,8 @@
imls, 1, 1, do_imls,
"list all images found in flash",
"\n"
- " - Prints information about all images found at sector\n"
- " boundaries in flash."
+ " - Prints information about all images found at sector/block\n"
+ " boundaries in nor/nand flash."
);
#endif
diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index 1568594..495610c 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -608,7 +608,7 @@
size_t rwsize;
ulong pagecount = 1;
int read;
- int raw;
+ int raw = 0;
if (argc < 4)
goto usage;
diff --git a/common/cmd_spl.c b/common/cmd_spl.c
index e3c543b..94b0a17 100644
--- a/common/cmd_spl.c
+++ b/common/cmd_spl.c
@@ -184,7 +184,11 @@
U_BOOT_CMD(
spl, 6 , 1, do_spl, "SPL configuration",
- "export <img=atags|fdt> [kernel_addr] [initrd_addr] "
- "[fdt_addr if <img> = fdt] - export a kernel parameter image\n"
- "\t initrd_img can be set to \"-\" if fdt_addr without initrd img is"
- "used");
+ "export <img=atags|fdt> [kernel_addr] [initrd_addr] [fdt_addr]\n"
+ "\timg\t\t\"atags\" or \"fdt\"\n"
+ "\tkernel_addr\taddress where a kernel image is stored.\n"
+ "\t\t\tkernel is loaded as part of the boot process, but it is not started.\n"
+ "\tinitrd_addr\taddress of initial ramdisk\n"
+ "\t\t\tcan be set to \"-\" if fdt_addr without initrd_addr is used.\n"
+ "\tfdt_addr\tin case of fdt, the address of the device tree.\n"
+ );
diff --git a/common/env_nand.c b/common/env_nand.c
index 22e72a2..5b69889 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -331,6 +331,7 @@
void env_relocate_spec(void)
{
#if !defined(ENV_IS_EMBEDDED)
+ int read1_fail = 0, read2_fail = 0;
int crc1_ok = 0, crc2_ok = 0;
env_t *ep, *tmp_env1, *tmp_env2;
@@ -342,14 +343,19 @@
goto done;
}
- if (readenv(CONFIG_ENV_OFFSET, (u_char *) tmp_env1))
- puts("No Valid Environment Area found\n");
+ read1_fail = readenv(CONFIG_ENV_OFFSET, (u_char *) tmp_env1);
+ read2_fail = readenv(CONFIG_ENV_OFFSET_REDUND, (u_char *) tmp_env2);
- if (readenv(CONFIG_ENV_OFFSET_REDUND, (u_char *) tmp_env2))
- puts("No Valid Redundant Environment Area found\n");
+ if (read1_fail && read2_fail)
+ puts("*** Error - No Valid Environment Area found\n");
+ else if (read1_fail || read2_fail)
+ puts("*** Warning - some problems detected "
+ "reading environment; recovered successfully\n");
- crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc;
- crc2_ok = crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc;
+ crc1_ok = !read1_fail &&
+ (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
+ crc2_ok = !read2_fail &&
+ (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
if (!crc1_ok && !crc2_ok) {
set_default_env("!bad CRC");
diff --git a/doc/README.falcon b/doc/README.falcon
new file mode 100644
index 0000000..93e855d
--- /dev/null
+++ b/doc/README.falcon
@@ -0,0 +1,209 @@
+U-Boot Falcon Mode
+====================
+
+Introduction
+------------
+
+This document provides an overview of how to add support for Falcon Mode
+to a board.
+
+Falcon Mode is introduced to speed up the booting process, allowing
+to boot a Linux kernel (or whatever image) without a full blown U-Boot.
+
+Falcon Mode relies on the SPL framework. In fact, to make booting faster,
+U-Boot is split into two parts: the SPL (Secondary Program Loader) and U-Boot
+image. In most implementations, SPL is used to start U-Boot when booting from
+a mass storage, such as NAND or SD-Card. SPL has now support for other media,
+and can generally be seen as a way to start an image performing the minimum
+required initialization. SPL mainly initializes the RAM controller, and then
+copies U-Boot image into the memory.
+
+The Falcon Mode extends this way allowing to start the Linux kernel directly
+from SPL. A new command is added to U-Boot to prepare the parameters that SPL
+must pass to the kernel, using ATAGS or Device Tree.
+
+In normal mode, these parameters are generated each time before
+loading the kernel, passing to Linux the address in memory where
+the parameters can be read.
+With Falcon Mode, this snapshot can be saved into persistent storage and SPL is
+informed to load it before running the kernel.
+
+To boot the kernel, these steps under a Falcon-aware U-Boot are required:
+
+1. Boot the board into U-Boot.
+Use the "spl export" command to generate the kernel parameters area or the DT.
+U-Boot runs as when it boots the kernel, but stops before passing the control
+to the kernel.
+
+2. Save the prepared snapshot into persistent media.
+The address where to save it must be configured into board configuration
+file (CONFIG_CMD_SPL_NAND_OFS for NAND).
+
+3. Boot the board into Falcon Mode. SPL will load the kernel and copy
+the parameters which are saved in the persistent area to the required address.
+
+It is required to implement a custom mechanism to select if SPL loads U-Boot
+or another image.
+
+The value of a GPIO is a simple way to operate the selection, as well as
+reading a character from the SPL console if CONFIG_SPL_CONSOLE is set.
+
+Falcon Mode is generally activated by setting CONFIG_SPL_OS_BOOT. This tells
+SPL that U-Boot is not the only available image that SPL is able to start.
+
+Configuration
+----------------------------
+CONFIG_CMD_SPL Enable the "spl export" command.
+ The command "spl export" is then available in U-Boot
+ mode
+CONFIG_SYS_SPL_ARGS_ADDR Address in RAM where the parameters must be
+ copied by SPL.
+ In most cases, it is <start_of_ram> + 0x100
+
+CONFIG_SYS_NAND_SPL_KERNEL_OFFS Offset in NAND where the kernel is stored
+
+CONFIG_CMD_SPL_NAND_OFS Offset in NAND where the parameters area was saved.
+
+CONFIG_CMD_SPL_WRITE_SIZE Size of the parameters area to be copied
+
+CONFIG_SPL_OS_BOOT Activate Falcon Mode.
+
+Function that a board must implement
+------------------------------------
+
+void spl_board_prepare_for_linux(void) : optional
+ Called from SPL before starting the kernel
+
+spl_start_uboot() : required
+ Returns "0" if SPL should start the kernel, "1" if U-Boot
+ must be started.
+
+
+Using spl command
+-----------------
+
+spl - SPL configuration
+
+Usage:
+
+spl export <img=atags|fdt> [kernel_addr] [initrd_addr] [fdt_addr ]
+
+img : "atags" or "fdt"
+kernel_addr : kernel is loaded as part of the boot process, but it is not started.
+ This is the address where a kernel image is stored.
+initrd_addr : Address of initial ramdisk
+ can be set to "-" if fdt_addr without initrd_addr is used
+fdt_addr : in case of fdt, the address of the device tree.
+
+The spl export command does not write to a storage media. The user is
+responsible to transfer the gathered information (assembled ATAGS list
+or prepared FDT) from temporary storage in RAM into persistant storage
+after each run of 'spl export'. Unfortunately the position of temporary
+storage can not be predicted nor provided at commandline, it depends
+highly on your system setup and your provided data (ATAGS or FDT).
+However at the end of an succesful 'spl export' run it will print the
+RAM address of temporary storage.
+Now the user have to save the generated BLOB from that printed address
+to the pre-defined address in persistent storage
+(CONFIG_CMD_SPL_NAND_OFS in case of NAND).
+The following example shows how to prepare the data for Falcon Mode on
+twister board with ATAGS BLOB.
+
+The "spl export" command is prepared to work with ATAGS and FDT. However,
+using FDT is at the moment untested. The ppc port (see a3m071 example
+later) prepares the fdt blob with the fdt command instead.
+
+
+Usage on the twister board:
+--------------------------------
+
+Using mtd names with the following (default) configuration
+for mtdparts:
+
+device nand0 <omap2-nand.0>, # parts = 9
+ #: name size offset mask_flags
+ 0: MLO 0x00080000 0x00000000 0
+ 1: u-boot 0x00100000 0x00080000 0
+ 2: env1 0x00040000 0x00180000 0
+ 3: env2 0x00040000 0x001c0000 0
+ 4: kernel 0x00600000 0x00200000 0
+ 5: bootparms 0x00040000 0x00800000 0
+ 6: splashimg 0x00200000 0x00840000 0
+ 7: mini 0x02800000 0x00a40000 0
+ 8: rootfs 0x1cdc0000 0x03240000 0
+
+
+twister => nand read 82000000 kernel
+
+NAND read: device 0 offset 0x200000, size 0x600000
+ 6291456 bytes read: OK
+
+Now the kernel is in RAM at address 0x82000000
+
+twister => spl export atags 0x82000000
+## Booting kernel from Legacy Image at 82000000 ...
+ Image Name: Linux-3.5.0-rc4-14089-gda0b7f4
+ Image Type: ARM Linux Kernel Image (uncompressed)
+ Data Size: 3654808 Bytes = 3.5 MiB
+ Load Address: 80008000
+ Entry Point: 80008000
+ Verifying Checksum ... OK
+ Loading Kernel Image ... OK
+OK
+cmdline subcommand not supported
+bdt subcommand not supported
+Argument image is now in RAM at: 0x80000100
+
+The result can be checked at address 0x80000100:
+
+twister => md 0x80000100
+80000100: 00000005 54410001 00000000 00000000 ......AT........
+80000110: 00000000 00000067 54410009 746f6f72 ....g.....ATroot
+80000120: 65642f3d 666e2f76 77722073 73666e20 =/dev/nfs rw nfs
+
+The parameters generated with this step can be saved into NAND at the offset
+0x800000 (value for twister for CONFIG_CMD_SPL_NAND_OFS)
+
+nand erase.part bootparms
+nand write 0x80000100 bootparms 0x4000
+
+Now the parameters are stored into the NAND flash at the address
+CONFIG_CMD_SPL_NAND_OFS (=0x800000).
+
+Next time, the board can be started into Falcon Mode moving the
+setting the gpio (on twister gpio 55 is used) to kernel mode.
+
+The kernel is loaded directly by the SPL without passing through U-Boot.
+
+Example with FDT: a3m071 board
+-------------------------------
+
+To boot the Linux kernel from the SPL, the DT blob (fdt) needs to get
+prepard/patched first. U-Boot usually inserts some dynamic values into
+the DT binary (blob), e.g. autodetected memory size, MAC addresses,
+clocks speeds etc. To generate this patched DT blob, you can use
+the following command:
+
+1. Load fdt blob to SDRAM:
+=> tftp 1800000 a3m071/a3m071.dtb
+
+2. Set bootargs as desired for Linux booting (e.g. flash_mtd):
+=> run mtdargs addip2 addtty
+
+3. Use "fdt" commands to patch the DT blob:
+=> fdt addr 1800000
+=> fdt boardsetup
+=> fdt chosen
+
+4. Display patched DT blob (optional):
+=> fdt print
+
+5. Save fdt to NOR flash:
+=> erase fc060000 fc07ffff
+=> cp.b 1800000 fc060000 10000
+...
+
+
+Falcon Mode was presented at the RMLL 2012. Slides are available at:
+
+http://schedule2012.rmll.info/IMG/pdf/LSM2012_UbootFalconMode_Babic.pdf
diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c
index 2ba0c5e..ff2d348 100644
--- a/drivers/mtd/nand/nand_util.c
+++ b/drivers/mtd/nand/nand_util.c
@@ -237,6 +237,14 @@
/* select the NAND device */
chip->select_chip(mtd, 0);
+ /* check the Lock Tight Status */
+ chip->cmdfunc(mtd, NAND_CMD_LOCK_STATUS, -1, 0);
+ if (chip->read_byte(mtd) & NAND_LOCK_STATUS_TIGHT) {
+ printf("nand_lock: Device is locked tight!\n");
+ ret = -1;
+ goto out;
+ }
+
chip->cmdfunc(mtd,
(tight ? NAND_CMD_LOCK_TIGHT : NAND_CMD_LOCK),
-1, -1);
@@ -249,6 +257,7 @@
ret = -1;
}
+ out:
/* de-select the NAND device */
chip->select_chip(mtd, -1);
return ret;
@@ -337,6 +346,15 @@
goto out;
}
+ /* check the Lock Tight Status */
+ page = (int)(start >> chip->page_shift);
+ chip->cmdfunc(mtd, NAND_CMD_LOCK_STATUS, -1, page & chip->pagemask);
+ if (chip->read_byte(mtd) & NAND_LOCK_STATUS_TIGHT) {
+ printf("nand_unlock: Device is locked tight!\n");
+ ret = -1;
+ goto out;
+ }
+
if ((start & (mtd->erasesize - 1)) != 0) {
printf("nand_unlock: Start address must be beginning of "
"nand block!\n");
@@ -358,7 +376,6 @@
length -= mtd->erasesize;
/* submit address of first page to unlock */
- page = (int)(start >> chip->page_shift);
chip->cmdfunc(mtd, NAND_CMD_UNLOCK1, -1, page & chip->pagemask);
/* submit ADDRESS of LAST page to unlock */
diff --git a/include/configs/devkit8000.h b/include/configs/devkit8000.h
index d926f74..788227d 100644
--- a/include/configs/devkit8000.h
+++ b/include/configs/devkit8000.h
@@ -354,7 +354,6 @@
/* SPL OS boot options */
#define CONFIG_SPL_OS_BOOT
-#define CONFIG_SPL_OS_BOOT_KEY 26
#define CONFIG_CMD_SPL
#define CONFIG_CMD_SPL_WRITE_SIZE 0x400 /* 1024 byte */
diff --git a/include/configs/twister.h b/include/configs/twister.h
index a852481..4205a11 100644
--- a/include/configs/twister.h
+++ b/include/configs/twister.h
@@ -58,7 +58,6 @@
#define CONFIG_CMD_SPL_NAND_OFS (CONFIG_SYS_NAND_SPL_KERNEL_OFFS+\
0x600000)
#define CONFIG_SPL_OS_BOOT
-#define CONFIG_SPL_OS_BOOT_KEY 55
#define CONFIG_SYS_SPL_ARGS_ADDR (PHYS_SDRAM_1 + 0x100)
#define CONFIG_SPL_BOARD_INIT