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d59476b644
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Simon Glass d59476b644 Add a simple malloc() implementation for pre-relocation 
If we are to have driver model before relocation we need to support some
way of calling memory allocation routines.

The standard malloc() is pretty complicated:

1. It uses some BSS memory for its state, and BSS is not available before
relocation

2. It supports algorithms for reducing memory fragmentation and improving
performace of free(). Before relocation we could happily just not support
free().

3. It includes about 4KB of code (Thumb 2) and 1KB of data. However since
this has been loaded anyway this is not really a problem.

The simplest way to support pre-relocation malloc() is to reserve an area
of memory and allocate it in increasing blocks as needed. This
implementation does this.

To enable it, you need to define the size of the malloc() pool as described
in the README. It will be located above the pre-relocation stack on
supported architectures.

Note that this implementation is only useful on machines which have some
memory available before dram_init() is called - this includes those that
do no DRAM init (like tegra) and those that do it in SPL (quite a few
boards). Enabling driver model preior to relocation for the rest of the
boards is left for a later exercise.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-07-23 14:05:40 +01:00
..
spl spl: nand: read only in the size of image_header on the first access 2014-07-22 07:44:25 -04:00
autoboot.c autoboot: add its own header 2014-07-18 17:53:24 -04:00
bedbug.c Consolidate bool type 2013-04-01 16:33:52 -04:00
board_f.c Add a simple malloc() implementation for pre-relocation 2014-07-23 14:05:40 +01:00
board_r.c Add a simple malloc() implementation for pre-relocation 2014-07-23 14:05:40 +01:00
bootm_os.c common: bootm_os: make arch_preboot_os __weak 2014-07-18 17:53:23 -04:00
bootm.c Enhance fit_check_sign to check all images 2014-06-19 11:19:02 -04:00
bootretry.c Rename bootretry functions and remove #ifdefs 2014-05-29 17:49:00 -04:00
bootstage.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
bouncebuf.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cli_hush.c common/cli_hush.c: remove unnecessary double braces 2014-06-11 16:27:06 -04:00
cli_readline.c Move bootretry code into bootretry.c and clean up 2014-05-29 17:48:21 -04:00
cli_simple.c Use run_command_repeatable() 2014-06-11 16:25:47 -04:00
cli.c Add run_command_repeatable() 2014-06-11 16:25:47 -04:00
cmd_aes.c aes: Add 'aes' command to access AES-128-CBC 2014-03-21 16:43:58 -04:00
cmd_ambapp.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_bdinfo.c common: commands: make commands static 2014-07-18 17:53:23 -04:00
cmd_bedbug.c Use run_command_repeatable() 2014-06-11 16:25:47 -04:00
cmd_bmp.c Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
cmd_boot.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_bootldr.c Blackfin: bootldr: use common defines 2011-04-08 00:44:27 -04:00
cmd_bootm.c bootm: Split out code from cmd_bootm.c 2014-06-19 11:18:58 -04:00
cmd_bootmenu.c Remove unnecessary use of hush header file 2014-05-29 17:45:31 -04:00
cmd_bootstage.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_cache.c common: commands: make commands static 2014-07-18 17:53:23 -04:00
cmd_cbfs.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_clk.c common: Add new clk command 2014-02-04 16:32:20 +01:00
cmd_console.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_cplbinfo.c various cmd_* files: fixed layout a little bit 2010-08-09 01:07:37 +02:00
cmd_cramfs.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_dataflash_mmc_mux.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_date.c Merge branch 'master' of git://git.denx.de/u-boot-i2c 2013-07-24 09:50:24 -04:00
cmd_dcr.c Add cli_ prefix to readline functions 2014-05-29 17:45:31 -04:00
cmd_demo.c dm: rename device struct to udevice 2014-05-27 10:21:32 -04:00
cmd_dfu.c dfu: free entities when parsing fails 2014-06-25 22:49:43 +02:00
cmd_diag.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_disk.c bootm: make use of legacy image format configurable 2014-06-05 14:44:56 -04:00
cmd_display.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_dtt.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_echo.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_eeprom.c common: commands: make commands static 2014-07-18 17:53:23 -04:00
cmd_elf.c Correct vxWorks elf boot to load at correct address 2013-12-13 09:17:32 -05:00
cmd_exit.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ext2.c Fix help text of ext2load and fatload. 2014-07-22 07:44:25 -04:00
cmd_ext4.c EXT4: Fix number base handling of "ext4write" command 2014-02-19 10:47:36 -05:00
cmd_fastboot.c usb/gadget: add the fastboot gadget 2014-05-08 10:38:30 +02:00
cmd_fat.c Fix help text of ext2load and fatload. 2014-07-22 07:44:25 -04:00
cmd_fdc.c bootm: make use of legacy image format configurable 2014-06-05 14:44:56 -04:00
cmd_fdt.c Reverse the meaning of the fit_config_verify() return code 2014-06-19 11:18:58 -04:00
cmd_fitupd.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_flash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_fpga.c bootm: make use of legacy image format configurable 2014-06-05 14:44:56 -04:00
cmd_fpgad.c powerpc/ppc4xx: Convert new gdsys files to SPDX license tags 2013-07-26 15:32:59 -04:00
cmd_fs.c common: commands: make commands static 2014-07-18 17:53:23 -04:00
cmd_fuse.c Add the function 'confirm_yesno' for interactive 2014-05-23 11:53:05 +03:00
cmd_gettime.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_gpio.c dm: rename device struct to udevice 2014-05-27 10:21:32 -04:00
cmd_gpt.c cmd:gpt: randomly generate each partition uuid if undefined 2014-04-02 16:36:06 -04:00
cmd_hash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_help.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_i2c.c common: commands: make commands static 2014-07-18 17:53:23 -04:00
cmd_ide.c common: cmd_ide: use __weak and add prototypes 2014-07-22 07:44:26 -04:00
cmd_immap.c powerpc: mpc8260: consolidate CONFIG_MPC8260 and CONFIG_8260 2014-03-07 10:59:06 -05:00
cmd_ini.c SPDX-License-Identifier: convert BSD-3-Clause files 2013-08-19 15:45:35 -04:00
cmd_io.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_iotrace.c Add an I/O tracing feature 2014-06-20 11:54:29 -06:00
cmd_irq.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_itest.c Fix itest mask overflow 2014-06-05 14:38:38 -04:00
cmd_jffs2.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ldrinfo.c Blackfin: ldrinfo: new command 2011-04-08 00:44:27 -04:00
cmd_led.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_license.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_load.c Enable xmodem support 2013-08-16 13:45:15 -04:00
cmd_log.c common: Add get_effective_memsize() to memsize.c 2014-02-21 11:06:13 -05:00
cmd_lzmadec.c Add lzmadec command 2014-03-22 14:47:22 -06:00
cmd_mac.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_md5sum.c cmd_md5sum.c: remove dead code / fix warning 2014-06-19 11:19:07 -04:00
cmd_mdio.c net: add support for extended registers to mdio command 2013-11-22 16:50:52 -06:00
cmd_mem.c Rename bootretry functions and remove #ifdefs 2014-05-29 17:49:00 -04:00
cmd_mfsl.c common: fsl: Fix broken SPDX-License-Identifier change 2013-10-16 09:24:38 -04:00
cmd_mii.c common: cmd_mii: fix printf format warning 2014-07-18 17:53:24 -04:00
cmd_misc.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_mmc_spi.c mmc: Split mmc struct, rework mmc initialization (v2) 2014-03-24 12:58:56 +02:00
cmd_mmc.c cmd_mmc: make mmc dev always re-probe the HW 2014-06-12 15:21:12 +03:00
cmd_mp.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_mtdparts.c cmd_mtdparts: use 64 bits for flash size, partition size & offset 2013-10-09 12:52:16 -05:00
cmd_nand.c bootm: make use of legacy image format configurable 2014-06-05 14:44:56 -04:00
cmd_net.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_nvedit.c Add option -r to env import to allow import of text files with CRLF as line endings 2014-07-22 07:44:26 -04:00
cmd_onenand.c mtd: resync with Linux-3.7.1 2013-05-31 17:12:03 -05:00
cmd_otp.c Add the function 'confirm_yesno' for interactive 2014-05-23 11:53:05 +03:00
cmd_part.c common: commands: make commands static 2014-07-18 17:53:23 -04:00
cmd_pci.c Rename bootretry functions and remove #ifdefs 2014-05-29 17:49:00 -04:00
cmd_pcmcia.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_portio.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_pxe.c common: commands: make commands static 2014-07-18 17:53:23 -04:00
cmd_read.c Add a command to read raw blocks from a partition 2012-12-11 13:17:33 -07:00
cmd_reginfo.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_reiser.c cmd_reiser: normalize 'file not found' errors 2013-11-08 15:25:13 -05:00
cmd_sandbox.c sandbox: restore ability to access host fs through standard commands 2014-06-23 15:37:23 -06:00
cmd_sata.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_scsi.c common: spl: Add spl sata boot support 2014-02-19 10:47:43 -05:00
cmd_setexpr.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_sf.c sandbox: spi: Adjust 'sf test' to work on sandbox 2014-01-11 12:21:30 +05:30
cmd_sha1sum.c includes: move openssl headers to include/u-boot 2014-06-19 11:19:04 -04:00
cmd_softswitch.c blackfin: bf609: add softswitch config command 2013-05-13 16:26:12 +08:00
cmd_sound.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_source.c common: commands: make commands static 2014-07-18 17:53:23 -04:00
cmd_spi.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_spibootldr.c various cmd_* files: fixed layout a little bit 2010-08-09 01:07:37 +02:00
cmd_spl.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_strings.c Convert cmd_usage() calls in common to use a return value 2012-03-06 21:09:46 +01:00
cmd_terminal.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_test.c cmd_test: implement -e test for file existence 2014-02-19 09:47:34 -05:00
cmd_thordown.c USB: gadget: added a saner gadget downloader registration API 2014-05-05 08:21:47 +02:00
cmd_time.c cmd_time: do not show ticks 2014-05-12 15:19:46 -04:00
cmd_tpm.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_trace.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_tsi148.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_ubi.c common: commands: make commands static 2014-07-18 17:53:23 -04:00
cmd_ubifs.c common: commands: make commands static 2014-07-18 17:53:23 -04:00
cmd_universe.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_unzip.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_usb_mass_storage.c ums: allow the user to specify the device type 2014-05-08 10:38:29 +02:00
cmd_usb.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_version.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ximg.c bootm: make use of legacy image format configurable 2014-06-05 14:44:56 -04:00
cmd_yaffs2.c u-boot: Update yaffs2 file system 2012-08-09 23:39:18 +02:00
cmd_zfs.c cmd_zfs: normalize 'file not found' errors 2013-11-08 15:25:13 -05:00
cmd_zip.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
command.c Add 64-bit data support for memory commands 2014-03-04 12:15:30 -05:00
console.c Add the function 'confirm_yesno' for interactive 2014-05-23 11:53:05 +03:00
cros_ec.c cros_ec: Move EC interface into common library 2014-03-17 20:05:46 -06:00
ddr_spd.c driver/ddr/fsl: Add DDR4 support to Freescale DDR driver 2014-04-22 17:58:48 -07:00
dlmalloc.c Add a simple malloc() implementation for pre-relocation 2014-07-23 14:05:40 +01:00
dlmalloc.src Consolidate bool type 2013-04-01 16:33:52 -04:00
edid.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
env_attr.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
env_callback.c common, env: optimize boottime 2014-01-14 09:01:06 -05:00
env_common.c Add option -r to env import to allow import of text files with CRLF as line endings 2014-07-22 07:44:26 -04:00
env_dataflash.c env: Add env_export() wrapper 2014-03-21 16:43:59 -04:00
env_eeprom.c env_eeprom: Assign default environment during board_init_f 2014-06-05 14:44:56 -04:00
env_embedded.c nand_spl: remove nand_spl infrastructure 2014-06-05 17:01:59 -04:00
env_fat.c env_fat: use get_device_and_partition() during env save and load 2014-07-07 19:43:01 -04:00
env_flags.c common, env: optimize boottime 2014-01-14 09:01:06 -05:00
env_flash.c env_flash.c: Drop unused variables 2014-04-17 17:44:36 -04:00
env_mmc.c Merge branch 'u-boot/master' 2014-05-09 11:50:14 +02:00
env_nand.c env: Add env_export() wrapper 2014-03-21 16:43:59 -04:00
env_nowhere.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_nvram.c env: Add env_export() wrapper 2014-03-21 16:43:59 -04:00
env_onenand.c env: Add env_export() wrapper 2014-03-21 16:43:59 -04:00
env_remote.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_sf.c env: Add env_export() wrapper 2014-03-21 16:43:59 -04:00
env_ubi.c env: Add env_export() wrapper 2014-03-21 16:43:59 -04:00
exports.c Fix SPI build errors in exports.c 2011-12-07 08:41:22 +01:00
fdt_support.c fdt_support: correct the return condition of fdt_initrd() 2014-06-19 11:18:52 -04:00
flash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
hash.c includes: move openssl headers to include/u-boot 2014-06-19 11:19:04 -04:00
hwconfig.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
image-android.c image: add support for Android's boot image format 2014-05-08 10:38:29 +02:00
image-fdt.c image: Remove the fit_load_image() property parameter 2014-06-19 11:18:59 -04:00
image-fit.c includes: move openssl headers to include/u-boot 2014-06-19 11:19:04 -04:00
image-sig.c includes: move openssl headers to include/u-boot 2014-06-19 11:19:04 -04:00
image.c includes: move openssl headers to include/u-boot 2014-06-19 11:19:04 -04:00
iomux.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
iotrace.c Add an I/O tracing feature 2014-06-20 11:54:29 -06:00
kallsyms.c Add support for Linux-like kallsysms 2009-06-12 20:45:48 +02:00
kgdb_stubs.c kgdb: add default generic stubs 2010-01-18 00:23:00 +01:00
kgdb.c Make sure that argv[] argument pointers are not modified. 2010-07-04 23:55:42 +02:00
lcd.c sandbox: Add LCD driver 2014-03-17 20:05:49 -06:00
lynxkdi.c checkpatch whitespace cleanups 2011-10-22 01:13:35 +02:00
main.c common: main.c: make show_boot_progress __weak 2014-07-18 17:53:23 -04:00
Makefile Add an I/O tracing feature 2014-06-20 11:54:29 -06:00
memsize.c common: Add get_effective_memsize() to memsize.c 2014-02-21 11:06:13 -05:00
menu.c Add cli_ prefix to readline functions 2014-05-29 17:45:31 -04:00
miiphyutil.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
modem.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
s_record.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
splash.c common:splash: use __weak 2014-07-18 17:53:23 -04:00
stdio.c serial: arm_dcc: Remove stdio structure support 2013-08-13 08:38:29 +02:00
system_map.c Add support for Linux-like kallsysms 2009-06-12 20:45:48 +02:00
update.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
usb_hub.c usb: hub: remove CONFIG_USB_HUB_MIN_POWER_ON_DELAY 2014-06-01 19:20:07 +02:00
usb_kbd.c usb: Fix USB keyboard polling via control endpoint 2014-04-30 10:30:57 +02:00
usb_storage.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
usb.c usb: add enum usb_init_type parameter to usb_lowlevel_init 2013-10-20 23:45:26 +02:00
xyzModem.c common/xyzModem.c: move empty statements to newline 2014-06-11 16:27:06 -04:00