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path: root/include/common.h
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* Add a way of checking the position of a structure memberSimon Glass2015-07-21-0/+11
| | | | | | | | | | | | U-Boot uses structures for hardware access so it is important that these structures are correct. Add a way of asserting that a structure member is at a particular offset. This can be created using the datasheet for the hardware. This implementation uses Static_assert() since BUILD_BUG_ON() only works within functions. Signed-off-by: Simon Glass <sjg@chromium.org>
* arm: Allow cleanup_before_linux() without disabling cachesSimon Glass2015-06-10-0/+15
| | | | | | | | This function is used before jumping to U-Boot, but in that case we don't always want to disable caches. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
* meminfo cmd: Enable printing >=4GiB SDRAM sizesAndrew Bradford2015-05-28-1/+1
| | | | | | | | | gd->ram_size is stored as phys_size_t type which can be bigger than an unsigned long on some architectures. When using unsigned long type, SDRAM of 4GiB or larger will not print the correct size, but using phys_size_t will. Signed-off-by: Andrew Bradford <andrew.bradford@kodakalaris.com>
* Move display_options functions to their own headerSimon Glass2015-04-29-15/+1
| | | | | | | | Before adding one more function, create a separate header to help reduce the size of common.h. Add the missing function comments and tidy up. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* gunzip: add gzwrite routine for extracting compresed images to block deviceEric Nelson2015-04-22-0/+39
| | | | | | | | | | Initial filesystem images are generally highly compressible. Add a routine gzwrite that allows gzip-compressed images to be written to block devices. Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com> Reviewed-by: Tom Rini <trini@ti.com>
* powerpc/mpc85xx: Remove some dead codeScott Wood2015-04-20-1/+0
| | | | | | | | | | | | | | | | | | | U-Boot does not have system calls (the services it exposes to standalone commands use a different mechanism), so the syscall handler is dead code. It's also broken code, as it assumes it is located at 0xc00 -- while even before the patch to stop relocating exception vectors to 0, U-Boot had the syscall at 0x900. The critical and machine check return paths are never called -- the regular exception return path is used instead, which works because xSRR0/1 have already been saved and can be restored via the regular SRR0/1 (we don't care too much in U-Boot about taking a critical/mcheck inside another exception prolog/epilog). Also remove a few other small unused functions. Signed-off-by: Scott Wood <scottwood@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
* net: cosmetic: Change IPaddr_t to struct in_addrJoe Hershberger2015-04-18-1/+1
| | | | | | | | | This patch is simply clean-up to make the IPv4 type that is used match what Linux uses. It also attempts to move all variables that are IP addresses use good naming instead of CamelCase. No functional change. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Simon Glass <sjg@chromium.org>
* common: Make sure arch-specific map_sysmem() is definedJoe Hershberger2015-04-18-17/+0
| | | | | | | | | | | In the case where the arch defines a custom map_sysmem(), make sure that including just mapmem.h is sufficient to have these functions as they are when the arch does not override it. Also split the non-arch specific functions out of common.h Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* dm: Add a new CPU init function which can use driver modelSimon Glass2015-04-16-0/+11
| | | | | | | | | | | Since driver model is set up after arch_cpu_init(), that function cannot use drivers. Add a new arch_cpu_init_dm() function which is called immediately after driver model is ready, and can reference devices. This can be used to probe essential devices for the CPU. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* powerpc/mpc85xx: Add DSP side awareness for Freescale Heterogeneous SoCsShaveta Leekha2015-03-04-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code provides framework for heterogeneous multicore chips based on StarCore and Power Architecture which are chasis-2 compliant, like B4860 and B4420 It will make u-boot recognize all non-ppc cores and peripherals like SC3900/DSP CPUs, MAPLE, CPRI and print their configuration in u-boot logs. Example boot logs of B4860QDS: U-Boot 2015.01-00232-geef6e36-dirty (Jan 19 2015 - 11:58:45) CPU0: B4860E, Version: 2.2, (0x86880022) Core: e6500, Version: 2.0, (0x80400120) Clock Configuration: CPU0:1600 MHz, CPU1:1600 MHz, CPU2:1600 MHz, CPU3:1600 MHz, DSP CPU0:1200 MHz, DSP CPU1:1200 MHz, DSP CPU2:1200 MHz, DSP CPU3:1200 MHz, DSP CPU4:1200 MHz, DSP CPU5:1200 MHz, CCB:666.667 MHz, DDR:933.333 MHz (1866.667 MT/s data rate) (Asynchronous), IFC:166.667 MHz CPRI:600 MHz MAPLE:600 MHz, MAPLE-ULB:800 MHz, MAPLE-eTVPE:1000 MHz FMAN1: 666.667 MHz QMAN: 333.333 MHz Top level changes include: (1) Top level CONFIG to identify HETEROGENUOUS clusters (2) CONFIGS for SC3900/DSP components (3) Global structures like "cpu_type" and "MPC85xx_SYS_INFO" updated for dsp cores and other components (3) APIs to get DSP num cores and their Mask like: cpu_dsp_mask, cpu_num_dspcores etc same as that of PowerPC (5) Code to fetch and print SC cores and other heterogenous device's frequencies (6) README added for the same Signed-off-by: Shaveta Leekha <shaveta@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
* common/board_f: factor out reserve_stacksAndreas Bießmann2015-02-17-0/+18
| | | | | | | | Introduce arch_reserve_stacks() to tailor gd->start_addr_sp and gd->irq_sp to the architecture needs. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* common: Move dram_init() declaration to common locationMichal Simek2015-02-09-0/+1
| | | | | Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* generic-board: show model name in board_init_f() tooMasahiro Yamada2015-01-29-6/+7
| | | | | | | | | | | | | The common/board_r.c has show_model_r() to display the model name if the DTB has a "model" property. It sounds useful to have a similar function in common/board_f.c too because most of the boards show their board name before relocation. Instead of implementing the same function in both common/board_f.c and common/board_r.c, let's split it up into common/show_board_info.c. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org>
* powerpc: 74xx_7xx: remove 74xx_7xx cpu supportMasahiro Yamada2015-01-16-11/+0
| | | | | | | | | | | | | All the 74xx_7xx boards are still non-generic boards: P3G4, ZUMA, ppmc7xx, ELPPC, mpc7448hpc2 Acked-by: Marek Vasut <marex@denx.de> Acked-by: Stefan Roese <sr@denx.de> Acked-by: York Sun <yorksun@freescale.com> Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Nye Liu <nyet@zumanetworks.com> Cc: Roy Zang <tie-fei.zang@freescale.com>
* mpc8xx: remove lwmon board supportMasahiro Yamada2015-01-05-4/+0
| | | | | | | This board is still a non-generic board. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Wolfgang Denk <wd@denx.de>
* ARM: remove redundant asmlinkage defineMasahiro Yamada2014-12-15-3/+0
| | | | | | | | Use asmlinkage defined in include/linux/linkage.h if necessary. Actually no ARM board uses asmlinkage, so this commit has no impact. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
* x86: move arch-specific asmlinkage to <asm/linkage.h>Masahiro Yamada2014-12-15-3/+0
| | | | | | | | | | | | | | | | | | Commit 65dd74a674d6 (x86: ivybridge: Implement SDRAM init) introduced x86-specific asmlinkage into arch/x86/include/asm/config.h. Commit ed0a2fbf14f7 (x86: Add a definition of asmlinkage) added the same macro define again, this time, into include/common.h. (Please do not add arch-specific stuff to include/common.h any more; it is already too cluttered.) The generic asmlinkage is defined in <linux/linkage.h>. If you want to override it with an arch-specific one, the best way is to add it to <asm/linkage.h> like Linux Kernel. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
* powerpc: mpc8xx: remove hermes board supportMasahiro Yamada2014-12-08-5/+0
| | | | | | | | | | | | | This board sprinkles #ifdef(CONFIG_HERMES) over various global files such as include/common.h, common/board_r.c, common/cmd_bdinfo.c. Let's zap such an ill-behaved board. It has not been converted to generic board yet and mpc8xx is old enough. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Wolfgang Denk <wd@denx.de> Acked-by: Wolfgang Denk <wd@denx.de>
* x86: Add a definition of asmlinkageSimon Glass2014-11-25-0/+3
| | | | | | | This is needed to permit calling C from assembler without too much pain. Add a definition for x86. Signed-off-by: Simon Glass <sjg@chromium.org>
* Add pr_fmt() macroThierry Reding2014-11-23-5/+9
| | | | | | | | | | | | | | | | | | | | | This macro can be overridden in source files (before including common.h) and can be used to specify a prefix for debug and error messages. An example of how to use this is shown below: #define pr_fmt(fmt) "foo: " fmt #include <common.h> ... debug("bar"); The resulting message will read: foo: bar Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Simon Glass <sjg@chromium.org>
* linux/kernel.h: add typechecking to roundup macroMasahiro Yamada2014-11-20-1/+1
| | | | | | | | | This commit replaces roundup macro with the one from Linux Kernel. DEFINE_ALIGN_BUFFER must be fixed because typechecking can not be used in this context. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* include: move various macros to include/linux/kernel.hMasahiro Yamada2014-11-20-86/+1
| | | | | | | | | | | | | | | | | | | | | | | U-Boot has imported various utility macros from Linux scattering them to various places without consistency. In include/common.h are min, max, min3, max3, ARRAY_SIZE, ALIGN, container_of, DIV_ROUND_UP, etc. In include/linux/compat.h are min_t, max_t, round_up, round_down, etc. We also have duplicated defines of min_t in some *.c files. Moreover, we are suffering from too cluttered include/common.h. This commit moves various macros that originate in include/linux/kernel.h of Linux to their original position. Note: This commit simply moves the macros; the macros roundup, min, max, min2, max3, ARRAY_SIZE are different from those of Linux at this point. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* include/common.h: remove DIV_ROUND definitionMasahiro Yamada2014-11-20-1/+0
| | | | | | | All the references of DIV_ROUND have been replaced with DIV_ROUND_CLOSEST. Remove DIV_ROUND. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Tidy up data sizes and function comment in display_optionsSimon Glass2014-10-27-1/+13
| | | | | | | Use inttypes.h and uint64_t to correct the code so that it will not issue warnings on 64-bit machines where 'uint64_t' is 'unsigned long'. Signed-off-by: Simon Glass <sjg@chromium.org>
* Use uint64_t for time typesSimon Glass2014-10-27-1/+1
| | | | | | | | Unfortunately 'unsigned long long' and 'uint64_t' are not necessarily compatible on 64-bit machines. Use the correct typedef instead of writing the supposed type out in full. Signed-off-by: Simon Glass <sjg@chromium.org>
* Add some standard headers external code might needGabe Black2014-10-27-0/+3
| | | | | | | | | | | | | | | | inttypes.h defines format specifiers for printf which work with data types of particular sizes. stdlib.h is currently just a passthrough to malloc.h which has declarations of the various *alloc functions. Add the required #define to common.h so that these printf format specifiers will be made available. Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-by: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Bill Richardson <wfrichar@google.com> Signed-off-by: Simon Glass <sjg@chromium.org> (Replaced with a GPL version from glibc)
* ppc: Zap Hymod boardMarek Vasut2014-10-27-3/+0
| | | | | | | | | | | | | | | Remove this board as this is the only one last user of eeprom_probe(), which is pretty non-standard stuff. This patch also removes all the PHP, SQL and CSS stuff from U-Boot, which probably makes U-Boot a bit less IoT ;-) Signed-off-by: Marek Vasut <marex@denx.de> Cc: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Tom Rini <trini@ti.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de>
* serial: add static directive to local functionsMasahiro Yamada2014-10-23-7/+0
| | | | | | | | | | | | The functions _serial_putc, _serial_putc_raw, _serial_puts, _serial_getc, _serial_tstc, _serial_setbrg are defined and used locally in each of serial_ns16550.c and serial_s3c24x0.c. Add static directive to them and remove declarations from include/common.h. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org>
* common.h: remove MIN, MAX, MIN3, MAX3 macrosMasahiro Yamada2014-09-24-6/+0
| | | | | | | Now MIN, MAX, MIN3, MAX are not used. Going forward, use min, max, min3, max3. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* arm:reset: call the reset_misc() before the cpu resetPrzemyslaw Marczak2014-09-05-0/+1
| | | | | | | | | | | | | | | | | | | | On an Odroid U3 board, the SOC is unable to reset the eMMC card in the DWMMC mode by the cpu software reset. Manual reset of the card by switching proper gpio pin - fixes this issue. Such solution needs to add a call to pre reset function. This is done by the reset_misc() function, which is called before reset_cpu(). The function reset_misc() is a weak function. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> Cc: Tom Rini <trini@ti.com> Changes v4: - arch/arm/reset: fix weak function attribute to proper style Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* powerpc: mpc8xx: remove stxxtc board supportMasahiro Yamada2014-08-21-4/+1
| | | | | | This board has been orphaned for a while and old enough. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* ARM: convert arch_fixup_memory_node to a generic FDT fixup functionMa Haijun2014-07-28-3/+3
| | | | | | | | | | | | Some architecture needs extra device tree setup. Instead of adding yet another hook, convert arch_fixup_memory_node to be a generic FDT fixup function. [maz: collapsed 3 patches into one, rewrote commit message] Signed-off-by: Ma Haijun <mahaijuns@gmail.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* stdio: Pass device pointer to stdio methodsSimon Glass2014-07-23-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | At present stdio device functions do not get any clue as to which stdio device is being acted on. Some implementations go to great lengths to work around this, such as defining a whole separate set of functions for each possible device. For driver model we need to associate a stdio_dev with a device. It doesn't seem possible to continue with this work-around approach. Instead, add a stdio_dev pointer to each of the stdio member functions. Note: The serial drivers have the same problem, but it is not strictly necessary to fix that to get driver model running. Also, if we convert serial over to driver model the problem will go away. Code size increases by 244 bytes for Thumb2 and 428 for PowerPC. 22: stdio: Pass device pointer to stdio methods arm: (for 2/2 boards) all +244.0 bss -4.0 text +248.0 powerpc: (for 1/1 boards) all +428.0 text +428.0 Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Marek Vasut <marex@denx.de> Reviewed-by: Marek Vasut <marex@denx.de>
* mpc8xx: remove fads board supportMasahiro Yamada2014-07-07-4/+2
| | | | | | These boards are old enough and have no maintainers. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* mpc8xx: remove RPXlite_dw, quantum board supportMasahiro Yamada2014-07-07-2/+0
| | | | | | These boards are old enough and have no maintainers. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* ARMv8/FSL_LSCH3: Add FSL_LSCH3 SoCYork Sun2014-07-03-3/+2
| | | | | | | | | | | | | | Freescale LayerScape with Chassis Generation 3 is a set of SoCs with ARMv8 cores and 3rd generation of Chassis. We use different MMU setup to support memory map and cache attribute for these SoCs. MMU and cache are enabled very early to bootst performance, especially for early development on emulators. After u-boot relocates to DDR, a new MMU table with QBMan cache access is created in DDR. SMMU pagesize is set in SMMU_sACR register. Both DDR3 and DDR4 are supported. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Arnab Basu <arnab.basu@freescale.com>
* Add run_command_repeatable()Thomas Betker2014-06-11-0/+1
| | | | | | | | | | run_command() returns 0 on success and 1 on error. However, there are some invocations which expect 0 or 1 for success (not repeatable or repeatable) and -1 for error; add run_command_repeatable() for this purpose. Signed-off-by: Thomas Betker <thomas.betker@rohde-schwarz.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
* powerpc: ep8248: remove orphan boardMasahiro Yamada2014-05-30-2/+0
| | | | | | | | | | | This board has been orphan for a while. (Emails to its maintainer have been bouncing.) Because MPC82xx family is old enough, nobody would pick up the maintainership on it. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Wolfgang Denx <wd@denx.de>
* m68k: powerpc: Clean up do_mdm_initSimon Glass2014-05-29-0/+1
| | | | | | | | This code seems unnecessarily complex. We really just need to check the global_data. Now that is it all in one place, and not arch-specific, this is pretty easy. Signed-off-by: Simon Glass <sjg@chromium.org>
* Move bootretry code into bootretry.c and clean upSimon Glass2014-05-29-2/+0
| | | | | | | This code is only used by one board, so it seems a shame to clutter up the readline code with it. Move it into its own file. Signed-off-by: Simon Glass <sjg@chromium.org>
* move CLI prototypes to cli.h and add commentsSimon Glass2014-05-29-4/+0
| | | | | | | Move the CLI prototypes from common.h to cli.h as part of an effort to reduce the size of common.h. Signed-off-by: Simon Glass <sjg@chromium.org>
* Add the function 'confirm_yesno' for interactivePierre Aubert2014-05-23-1/+1
| | | | | | | | User's confirmation is asked in different commands. This commit adds a function for such confirmation. Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com> Signed-off-by: Pierre Aubert <p.aubert@staubli.com>
* powerpc/mpc85xx: Fix boot_flag for calling board_init_f()York Sun2014-05-13-1/+4
| | | | | | | | | baord_init_f takes one argument, boot_flag. It has not been used for powerpc, until recently changing to use generic board architecture. The boot flag is added as a return value from cpu_init_f(). Signed-off-by: York Sun <yorksun@freescale.com> CC: Alexander Graf <agraf@suse.de>
* rand: do not surround function declarations by #ifdefMasahiro Yamada2014-05-12-2/+0
| | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* MIPS: drop incaip boardDaniel Schwierzeck2014-04-20-3/+0
| | | | | | | | | This is dead hardware and no one is interested in making the necessary changes for upcoming features like generic board or driver model. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Wolfgang Denk <wd@denx.de>
* powerpc: remove RPXClassic, RPXlite boards supportMasahiro Yamada2014-04-18-4/+0
| | | | | | | | | | | | | Enough time has passed since these boards were moved to Orphan. Remove. - Remove board/RPXlite/* - Remove board/RPXClassic/* - Remove include/configs/RPXlite.h - Remove include/configs/RPXClassic.h - Clean-up defined(CONFIG_RPXCLASSIC) - Move the entry from boards.cfg to doc/README.scrapyard Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* powerpc: remove MBX and MBX860T boards supportMasahiro Yamada2014-04-18-7/+0
| | | | | | | | | | | Enough time has passed since these boards were moved to Orphan. Remove. - Remove board/mbx8xx/* - Remove include/configs/{MBX.h,MBX860T.h} - Clean-up if defined(CONFIG_MBX) - Move the entries from boards.cfg to doc/README.scrapyard Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* lib: uuid: code refactor for proper maintain between uuid bin and stringPrzemyslaw Marczak2014-04-02-3/+1
| | | | | | | | | | | | | | | | | | | | | | | Changes in lib/uuid.c to: - uuid_str_to_bin() - uuid_bin_to_str() New parameter is added to specify input/output string format in listed functions This change allows easy recognize which UUID type is or should be stored in given string array. Binary data of UUID and GUID is always stored in big endian, only string representations are different as follows. String byte: 0 36 String char: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx string UUID: be be be be be string GUID: le le le be be This patch also updates functions calls and declarations in a whole code. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Stephen Warren <swarren@nvidia.com> Cc: Lukasz Majewski <l.majewski@samsung.com> Cc: trini@ti.com
* part_efi: move uuid<->string conversion functions into lib/uuid.cPrzemyslaw Marczak2014-04-02-1/+2
| | | | | | | | | | | | | | | | This commit introduces cleanup for uuid library. Changes: - move uuid<->string conversion functions into lib/uuid.c so they can be used by code outside part_efi.c. - rename uuid_string() to uuid_bin_to_str() for consistency with existing uuid_str_to_bin() - add an error return code to uuid_str_to_bin() - update existing code to the new library functions. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Stephen Warren <swarren@nvidia.com> Cc: Lukasz Majewski <l.majewski@samsung.com> Cc: trini@ti.com
* lib: rand: introduce new configs: CONFIG_LIB_RAND and CONFIG_LIB_HW_RANDPrzemyslaw Marczak2014-03-28-3/+1
| | | | | | | | | | | | | | | | | | | | | New configs: - CONFIG_LIB_RAND - to enable implementation of rand library in lib/rand.c - CONFIG_LIB_HW_RAND - to enable hardware based implementations of lib rand Other changes: - add CONFIG_LIB_RAND to boards configs which needs rand() - put only one rand.o dependency in lib/Makefile CONFIG_LIB_HW_RAND should be defined for drivers which implements rand library (declared in include/common.h): - void srand(unsigned int seed) - unsigned int rand(void) - unsigned int rand_r(unsigned int *seedp) Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Michael Walle <michael@walle.cc> Cc: Tom Rini <trini@ti.com> Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
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