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* MA-9409-3 Add base board support for android and android things.zhang sanshan2017-07-10-9/+20
| | | | | | | | | | | | | | | | | | * add board support for android and android things. mx6ul_nxpu_iopb, pico-6ul, pico-imx7d, aquila-6ul reorganize the Kconfig, and fix the redefine issue. * add android configure into configure-while * add a common file mx_android_common.h it will be included by android and android things. defconfig only include ANDROID_THINGS_SUPPORT or ANDROID_SUPPORT * move partition_table_valid into f_fastboot.c. it's a common code. * add invalidate_dcache_range in fixed order. It will have salt invalid issue if we do not add it in order * add display for pico-7d. Change-Id: I6f8a4876c2f8bbd098034d1e3f53033109300bca Signed-off-by: zhang sanshan <sanshan.zhang@nxp.com>
* MA-9409-1 enable avb on android things.zhang sanshan2017-07-10-0/+8907
| | | | | | | | | Fix issue for API changed from v2017. porting below patch from v2016. commit 44834fd12f60a090e3d10ab6f84a75460894d49d Change-Id: Ifaf0b86dd29648f9150646f00f54502676df9013 Signed-off-by: zhang sanshan <sanshan.zhang@nxp.com>
* x86: Use unsigned long for address in table generationSimon Glass2017-02-06-11/+11
| | | | | | | | We should use unsigned long rather than u32 for addresses. Update this so that the table-generation code builds correctly on 64-bit machines. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* lib: tpm: Add command to flush resourcesMario Six2017-02-01-0/+29
| | | | | | | | | | This patch adds a function to the TPM library, which allows U-Boot to flush resources, e.g. keys, from the TPM. Signed-off-by: Mario Six <mario.six@gdsys.cc> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Stefan Roese <sr@denx.de>
* disk: convert CONFIG_ISO_PARTITION to KconfigPatrick Delaunay2017-01-28-1/+1
| | | | | Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
* mkimage: Add support for signing with pkcs11George McCollister2017-01-14-11/+233
| | | | | | | | | | | | Add support for signing with the pkcs11 engine. This allows FIT images to be signed with keys securely stored on a smartcard, hardware security module, etc without exposing the keys. Support for other engines can be added in the future by modifying rsa_engine_get_pub_key() and rsa_engine_get_priv_key() to construct correct key_id strings. Signed-off-by: George McCollister <george.mccollister@gmail.com>
* lib: net_utils: enforce '.' as octet separator in string_to_ipChris Packham2017-01-14-0/+4
| | | | | | | Ensure '.' is used to separate octets. If another character is seen reject the string outright and return 0.0.0.0. Signed-off-by: Chris Packham <judge.packham@gmail.com>
* lib: net_utils: make string_to_ip stricterChris Packham2017-01-14-0/+4
| | | | | | | | | | | | Previously values greater than 255 were implicitly truncated. Add some stricter checking to reject addresses with components >255. With the input "1234192.168.1.1" the old behaviour would truncate the address to 192.168.1.1. New behaviour rejects the string outright and returns 0.0.0.0, which for the purposes of IP addresses can be considered an error. Signed-off-by: Chris Packham <judge.packham@gmail.com>
* delay: collect {m, n, u}delay declarations to include/linux/delay.hMasahiro Yamada2017-01-14-6/+0
| | | | | | | | | | | | | Currently, mdelay() and udelay() are declared in include/common.h, while ndelay() in include/linux/compat.h. It would be nice to collect them into include/linux/delay.h like Linux. While we are here, fix the ndelay() implementation; I used the DIV_ROUND_UP() instead of (x)/1000 because it must wait *longer* than the given period of time. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* libfdt: Correct fdt handling of overlays without fixups and base trees ↵David Gibson2017-01-13-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | without symbols The fdt_overlay_apply() function purports to support the edge cases where an overlay has no fixups to be applied, or a base tree which has no symbols (the latter can only work if the former is also true). However it gets it wrong in a couple of small ways: * In the no fixups case, it doesn't fail immediately, but will attempt fdt_for_each_property_offset() giving -FDT_ERR_NOTFOUND as the node offset, which will fail. Instead it should succeed immediately, since there's nothing to do. * In the case of no symbols, it again doesn't fail immediately. However if there is an actual fixup it will fail with an unexpected error, because -FDT_ERR_NOTFOUND is passed to fdt_getprop() when attempting to look up the symbols. We should instead return -FDT_ERR_NOTFOUND directly. Both of these errors lead to the code returning misleading error codes in failing cases. [ DTC commit: 7d8ef6e1db9794f72805a0855f4f7f12fadd03d3 ] Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefan Agner <stefan.agner@toradex.com> Acked-by: Simon Glass <sjg@chromium.org>
* Merge branch 'master' of git://git.denx.de/u-boot-sunxiTom Rini2017-01-10-11/+39
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| * SPL: tiny-printf: ignore "-" modifierAndre Przywara2017-01-04-0/+3
| | | | | | | | | | | | | | | | | | | | tiny-printf does not know about the "-" modifier, which aligns numbers. This is used by some SPL code, but as it's purely cosmetical, we just ignore this modifier here to avoid changing correct printf strings. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagan Teki <jagan@openedev.com>
| * SPL: tiny-printf: add "l" modifierAndre Przywara2017-01-04-11/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | tiny-printf does not know about the "l" modifier so far, which breaks the crash dump on AArch64, because it uses %lx to print the registers. Add an easy way of handling longs correctly. Using a relatively decent compiler (GCC 5.3.0) this does _not_ increase the code size of tiny-printf.o for 32-bit builds (where long and int are actually the same), actually it looses three (ARM Thumb2) instructions from the actual SPL (numbers for orangepi_plus_defconfig): text data bss dec hex filename 758 0 0 758 2f6 spl/lib/tiny-printf.o before 18839 488 232 19559 4c67 spl/u-boot-spl before 758 0 0 758 2f6 spl/lib/tiny-printf.o after 18833 488 232 19553 4c61 spl/u-boot-spl after This adds some substantial amount of code to a 64-bit build, though: (taken after a later commit, which enables the ARM64 SPL build for sunxi) text data bss dec hex filename 1542 0 0 1542 606 spl/lib/tiny-printf.o before 25830 392 360 26582 67d6 spl/u-boot-spl before 1758 0 0 1758 6de spl/lib/tiny-printf.o after 26040 392 360 26792 68a8 spl/u-boot-spl after Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagan Teki <jagan@openedev.com>
* | lib: gitignore *.elf and *.so generated by efi_loaderLadislav Michl2017-01-09-0/+2
|/ | | | Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
* fdt: add memory bank decoding functions for board setupNathan Rossi2016-12-20-0/+56
| | | | | | | | | | | | | | | | | | | | | Add two functions for use by board implementations to decode the memory banks of the /memory node so as to populate the global data with ram_size and board info for memory banks. The fdtdec_setup_memory_size() function decodes the first memory bank and sets up the gd->ram_size with the size of the memory bank. This function should be called from the boards dram_init(). The fdtdec_setup_memory_banksize() function decode the memory banks (up to the CONFIG_NR_DRAM_BANKS) and populates the base address and size into the gd->bd->bi_dram array of banks. This function should be called from the boards dram_init_banksize(). Signed-off-by: Nathan Rossi <nathan@nathanrossi.com> Cc: Simon Glass <sjg@chromium.org> Cc: Michal Simek <monstr@monstr.eu> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* efi_loader: Allow to compile helloworld.efi w/o bundling itAlexander Graf2016-11-27-0/+3
| | | | | | | | | | | | | | | | | Today we can compile a self-contained hello world efi test binary that allows us to quickly verify whether the EFI loader framwork works. We can use that binary outside of the self-contained test case though, by providing it to a to-be-tested system via tftp. This patch separates compilation of the helloworld.efi file from including it in the u-boot binary for "bootefi hello". It also modifies the efi_loader test case to enable travis to pick up the compiled file. Because we're now no longer bloating the resulting u-boot binary, we can enable compilation always, giving us good travis test coverage. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Tom Rini <trini@konsulko.com>
* image: Combine image_sig_algo with image_sign_infoAndrew Duda2016-11-21-10/+8
| | | | | | | | | | | | | | | Remove the need to explicitly add SHA/RSA pairings. Invalid SHA/RSA pairings will still fail on verify operations when the hash length is longer than the key length. Follow the same naming scheme "checksum,crytpo" without explicitly defining the string. Indirectly adds support for "sha1,rsa4096" signing/verification. Signed-off-by: Andrew Duda <aduda@meraki.com> Signed-off-by: aduda <aduda@meraki.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* image: Add crypto_algo struct for RSA infoAndrew Duda2016-11-21-8/+11
| | | | | | | | | | Cut down on the repetition of algorithm information by defining separate checksum and crypto structs. image_sig_algos are now simply pairs of unique checksum and crypto algos. Signed-off-by: Andrew Duda <aduda@meraki.com> Signed-off-by: aduda <aduda@meraki.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* rsa: Verify RSA padding programaticallyAndrew Duda2016-11-21-123/+47
| | | | | | | | | | | | | | | | | | | Padding verification was done against static SHA/RSA pair arrays which take up a lot of static memory, are mostly 0xff, and cannot be reused for additional SHA/RSA pairings. The padding can be easily computed according to PKCS#1v2.1 as: EM = 0x00 || 0x01 || PS || 0x00 || T where PS is (emLen - tLen - 3) octets of 0xff and T is DER encoding of the hash. Store DER prefix in checksum_algo and create rsa_verify_padding function to handle verification of a message for any SHA/RSA pairing. Signed-off-by: Andrew Duda <aduda@meraki.com> Signed-off-by: aduda <aduda@meraki.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* rsa: cosmetic: rename pad_len to key_lenAndrew Duda2016-11-21-3/+3
| | | | | | | | | checksum_algo's pad_len field isn't actually used to store the length of the padding but the total length of the RSA key (msg_len + pad_len) Signed-off-by: Andrew Duda <aduda@meraki.com> Signed-off-by: aduda <aduda@meraki.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* ls2080: Exit dpaa only right before exiting U-BootAlexander Graf2016-11-17-0/+2
| | | | | | | | | | | | | | | | | | | | | On ls2080 we have a separate network fabric component which we need to shut down before we enter Linux (or any other OS). Along with that also comes configuration of the fabric using a description file. Today we always stop and configure the fabric in the boot script and (again) exit it on device tree generation. This works ok for the normal booti case, but with bootefi the payload we're running may still want to access the network. So let's add a new fsl_mc command that defers configuration and stopping the hardware to when we actually exit U-Boot, so that we can still use the fabric from an EFI payload. For existing boot scripts, nothing should change with this patch. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: York Sun <york.sun@nxp.com> [agraf: Fix x86 build]
* x86: Enable EFI loader supportSimon Glass2016-11-14-1/+1
| | | | | | | | | | | | | | | | | | | | | Enable this so that EFI applications (notably grub) can be run under U-Boot on x86 platforms. At present the 'hello world' EFI application is not supported for the qemu-x86_efi_payload64 board. That board builds a payload consisting of a 64-bit header and a 32-bit U-Boot, which is incompatible with the way the EFI loader builds its EFI application. The following error is obtained: x86_64-linux-ld.bfd: i386 architecture of input file `lib/efi_loader/helloworld.o' is incompatible with i386:x86-64 output This could be corrected with additional Makefile rules. For now, this feature is disabled for that board. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> [agraf: drop hello kconfig bits] Signed-off-by: Alexander Graf <agraf@suse.de>
* efi: Add support for a hello world test programSimon Glass2016-11-14-0/+28
| | | | | | | | | It is useful to have a basic sanity check for EFI loader support. Add a 'bootefi hello' command which loads HelloWord.efi and runs it under U-Boot. Signed-off-by: Simon Glass <sjg@chromium.org> [agraf: Fix documentation, add unfulfilled kconfig dep] Signed-off-by: Alexander Graf <agraf@suse.de>
* x86: Tidy up selection of building the EFI stubSimon Glass2016-11-14-2/+2
| | | | | | | | | | | | | | At present we use a CONFIG option in efi.h to determine whether we are building the EFI stub or not. This means that the same header cannot be used for EFI_LOADER support. The CONFIG option will be enabled for the whole build, even when not building the stub. Use a different define instead, set up just for the files that make up the stub. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* efi: Correct cache flush alignmentSimon Glass2016-11-14-1/+2
| | | | | | | | Make sure that the cache flushes correctly by ensuring that the end address is correctly aligned. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Alexander Graf <agraf@suse.de>
* efi_loader: console: Correctly report modesEmmanuel Vadot2016-11-14-16/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for EFI console modes. Mode 0 is always 80x25 and present by EFI specification. Mode 1 is always 80x50 and not mandatory. Mode 2 and above is freely usable. If the terminal can handle mode 1, we mark it as supported. If the terminal size is greater than mode 0 and different than mode 1, we install it as mode 2. Modes can be switch with cout_set_mode. Changes in V5: Correctly detect mode before enabling mode 2. Changes in V4: Reset cursor positon on mode switch Use local variables in console query code Changes in V3: Valid mode are 0 to EFIMode-1 Fix style Changes in V2: Add mode switch Report only the modes that we support Signed-off-by: Emmanuel Vadot <manu@bidouilliste.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* efi: Use device device path type Messaging for network interface nodeOleksandr Tymoshenko2016-11-14-8/+9
| | | | | | | | | When adding network interface node use Messaging device path with subtype MAC Address and device's MAC address as a value instead of Media Device path type with subtype File Path and path "Net" Signed-off-by: Oleksandr Tymoshenko <gonzo@bluezbox.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* efi_loader: fix depends on line of EFI_LOADERMasahiro Yamada2016-11-14-1/+1
| | | | | | | | | | | | | | This line is shown as depends on (ARM64 ||\302\240ARM) && OF_LIBFDT on my Emacs. Use ASCII characters only. Assuming it is (ARM64 || ARM), remove the redundancy. Unlike Linux, CONFIG_ARM includes CONFIG_ARM64 in U-Boot. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* libfdt: fix fdt_stringlist_search()Masahiro Yamada2016-10-24-1/+1
| | | | | | | | | If fdt_getprop() fails, negative error code should be returned. [ DTC commit: daa75e8fa5942caa8e97931aed3a1ee0b7edd74b ] Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* libfdt: fix fdt_stringlist_count()Masahiro Yamada2016-10-24-1/+1
| | | | | | | | | If fdt_getprop() fails, negative error code should be returned. [ DTC commit: e28eff5b787adb3f461d1653598818b2f1f25a73 ] Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* libfdt: Sync overlay with upstreamMaxime Ripard2016-10-23-73/+129
| | | | | | | | | Now that the overlay code has been merge upstream, update our copy to what's been merged, since a significant number of issues have been fixed during the merge process. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Simon Glass <sjg@chromium.org>
* efi_loader: Rename EFI_RUNTIME_{TEXT, DATA} to __efi_runtime{, _data}Alexander Graf2016-10-19-13/+13
| | | | | | | | | | | Compiler attributes are more commonly __foo style tags rather than big upper case eye sores like EFI_RUNTIME_TEXT. Simon Glass felt quite strongly about this, so this patch converts our existing defines over to more eye friendly ones. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: efi: Add EFI loader support for x86Simon Glass2016-10-19-0/+13
| | | | | | | | | | | | | Add the required pieces to support the EFI loader on x86. Since U-Boot only builds for 32-bit on x86, only a 32-bit EFI application is supported. If a 64-bit kernel must be booted, U-Boot supports this directly using FIT (see doc/uImage.FIT/kernel.its). U-Boot can act as a payload for both 32-bit and 64-bit EFI. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* efi: Fix missing EFIAPI specifiersSimon Glass2016-10-19-10/+12
| | | | | | | | | These are missing in some functions. Add them to keep things consistent. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
* smbios: Provide serial numberAlexander Graf2016-10-19-0/+5
| | | | | | | | | | If the system has a valid "serial#" environment variable set (which boards that can find it out programatically set automatically), use that as input for the serial number and UUID fields in the SMBIOS tables. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* efi_loader: Fix efi_install_configuration_tableAlexander Graf2016-10-19-1/+1
| | | | | | | | | | | | So far we were only installing the FDT table and didn't have space to store any other. Hence nobody realized that our efi table allocation was broken in that it didn't set the indicator for the number of tables plus one. This patch fixes it, allowing code to allocate new efi tables. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org>
* smbios: Expose in efi_loader as tableAlexander Graf2016-10-19-2/+41
| | | | | | | | | | | | We can pass SMBIOS easily as EFI configuration table to an EFI payload. This patch adds enablement for that case. While at it, we also enable SMBIOS generation for ARM systems, since they support EFI_LOADER. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* smbios: Generate type 4 on non-x86 systemsAlexander Graf2016-10-19-13/+38
| | | | | | | | | | The type 4 table generation code is very x86 centric today. Refactor things out into the device model cpu class to allow the tables to get generated for other architectures as well. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* smbios: Allow compilation on 64bit systemsAlexander Graf2016-10-19-8/+8
| | | | | | | | | | | | | | The SMBIOS generation code passes pointers as u32. That causes the compiler to warn on casts to pointers. This patch moves all address pointers to uintptr_t instead. Technically u32 would be enough for the current SMBIOS2 style tables, but we may want to extend the code to SMBIOS3 in the future which is 64bit address capable. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* efi_loader: Expose efi_install_configuration_tableAlexander Graf2016-10-19-9/+13
| | | | | | | | | We want to be able to add configuration table entries from our own code as well as from EFI payload code. Export the boot service function internally too, so that we can reuse it. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: Move smbios generation into arch independent directoryAlexander Graf2016-10-19-0/+303
| | | | | | | | | We will need the SMBIOS generation function on ARM as well going forward, so let's move it into a non arch specific location. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: Move table csum into separate fileAlexander Graf2016-10-19-0/+21
| | | | | | | | | We need the checksum function without all the other table functionality soon, so let's split it out into its own C file. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* efi_loader: gop: Expose fb when 32bppAlexander Graf2016-10-19-0/+16
| | | | | | | When we're running in 32bpp mode, expose the frame buffer address to our payloads so that Linux efifb can pick it up. Signed-off-by: Alexander Graf <agraf@suse.de>
* efi_loader: Allow bouncing for networkAlexander Graf2016-10-19-0/+7
| | | | | | | | | | | | | So far bounce buffers were only used for disk I/O, but network I/O may suffer from the same problem. On platforms that have problems doing DMA on high addresses, let's also bounce outgoing network packets. Incoming ones always already get bounced. This patch fixes EFI PXE boot on ZynqMP for me. Signed-off-by: Alexander Graf <agraf@suse.de>
* efi_loader: Allow boards to implement get_time and reset_systemAlexander Graf2016-10-18-11/+91
| | | | | | | | | | | | | | | EFI allows an OS to leverage firmware drivers while the OS is running. In the generic code we so far had to stub those implementations out, because we would need board specific knowledge about MMIO setups for it. However, boards can easily implement those themselves. This patch provides the framework so that a board can implement its own versions of get_time and reset_system which would actually do something useful. While at it we also introduce a simple way for code to reserve MMIO pointers as runtime available. Signed-off-by: Alexander Graf <agraf@suse.de>
* efi_loader: Do not leak memory when unlinking a mappingStefan Brüns2016-10-18-2/+5
| | | | | | | | | | As soon as a mapping is unlinked from the list, there are no further references to it, so it should be freed. If it not unlinked, update the start address and length. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
* efi_loader: Keep memory mapping sorted when splitting an entryStefan Brüns2016-10-18-1/+2
| | | | | | | | | The code assumes sorted mappings in descending address order. When splitting a mapping, insert the new part next to the current mapping. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
* efi_loader: Readd freed pages to memory poolStefan Brüns2016-10-18-2/+9
| | | | | | | | | | | | | | | | | | | | | | Currently each allocation creates a new mapping. Readding the mapping as free memory (EFI_CONVENTIONAL_MEMORY) potentially allows to hand out an existing mapping, thus limiting the number of mapping descriptors in the memory map. Mitigates a problem with current (4.8rc7) linux kernels when doing an efi_get_memory map, resulting in an infinite loop. Space for the memory map is reserved with allocate_pool (implicitly creating a new mapping) and filled. If there is insufficient slack space (8 entries) in the map, the space is freed and a new round is started, with space for one more entry. As each round increases requirement and allocation by exactly one, there is never enough slack space. (At least 32 entries are allocated, so as long as there are less than 24 entries, there is enough slack). Earlier kernels reserved no slack, and did less allocations, so this problem was not visible. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
* efi_loader: Track size of pool allocations to allow freeingStefan Brüns2016-10-18-6/+42
| | | | | | | | | | | | | | | | | | | | | | | | | We need a functional free_pool implementation, as otherwise each allocate_pool causes growth of the memory descriptor table. Different to free_pages, free_pool does not provide the size for the to be freed allocation, thus we have to track the size ourselves. As the only EFI requirement for pool allocation is an alignment of 8 bytes, we can keep allocating a range using the page allocator, reserve the first 8 bytes for our bookkeeping and hand out the remainder to the caller. This saves us from having to use any independent data structures for tracking. To simplify the conversion between pool allocations and the corresponding page allocation, we create an auxiliary struct efi_pool_allocation. Given the allocation size free_pool size can handoff freeing the page range, which was indirectly allocated by a call to allocate_pool, to free_pages. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
* efi_loader: Move efi_allocate_pool implementation to efi_memory.cStefan Brüns2016-10-18-6/+19
| | | | | | | | | | | | | | | | | We currently handle efi_allocate_pool() in our boot time service file. In the following patch, pool allocation will receive additional internal semantics that we should preserve inside efi_memory.c instead. As foundation for those changes, split the function into an externally facing efi_allocate_pool_ext() for use by payloads and an internal helper efi_allocate_pool() in efi_memory.c that handles the actual allocation. While at it, change the magic 0xfff / 12 constants to the more obvious EFI_PAGE_MASK/SHIFT defines. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
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