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53 Commits

Author SHA1 Message Date
Vladimir Serbinenko
86ef66d977 arm-uboot: Make self-relocatable to allow loading at any address 2016-02-27 13:40:52 +01:00
Mark Salter
7eb27a49e9 arm-efi: Reduce timer event frequency by 10 
Timer event to keep grub msec counter was running at 1000HZ. This was too
fast for UEFI timer driver and resulted in a 10x slowdown in grub time
versus wallclock. Reduce the timer event frequency and increase tick
increment accordingly to keep better time.
 2016-01-07 20:54:20 +01:00
Mark Salter
c945ca75c3 Fix exit to EFI firmware 
The current code for EFI grub_exit() calls grub_efi_fini() before
returning to firmware. In the case of ARM, this leaves a timer
event running which could lead to a firmware crash. This patch
changes this so that grub_machine_fini() is called with a NORETURN
flag. This allows machine-specific shutdown to happen as well
as the shutdown done by grub_efi_fini().

Signed-off-by: Mark Salter <msalter@redhat.com>
 2015-06-12 13:08:36 +03:00
Leif Lindholm
d47e8ab4b9 dl_helper: Cleanup 
Use the new thumb_get_instruction_word/thumb_set_instruction_word
helpers throughout.

Style cleanup (missing spaces).

Move Thumb MOVW/MOVT handlers into Thumb relocation section of file.
 2015-03-27 14:37:16 +01:00
Vladimir Serbinenko
064360e667 Remove libgcc dependency. 
libgcc for boot environment isn't always present and compatible.
libgcc is often absent if endianness or bit-size at boot is different
from running OS.
libgcc may use optimised opcodes that aren't available on boot time.
So instead of relying on libgcc shipped with the compiler, supply
the functions in GRUB directly.
Tests are present to ensure that those replacement functions behave the
way compiler expects them to.
 2015-03-03 20:50:37 +01:00
Vladimir Serbinenko
38b7a30269 arm/dl: Fix handling of nonstandard relocation sizes 2015-02-26 22:10:29 +01:00
Vladimir Serbinenko
f034fab620 Supply signed division to fix ARM compilation. 
Previously we supplied only unsigned divisions on platforms that need software
division.
Yet compiler may itself use a signed division. A typical example would be a
difference between 2 pointers which involves division by object size.
 2015-02-23 04:12:04 +01:00
Leif Lindholm
c0f529ea67 arm: implement additional relocations generated by gcc 4.9 at -O3 
GCC 4.9 also generates R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_ABS,
as an alternative to ABS32.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
 2015-02-03 22:50:08 +00:00
David Kozub
17328db3b3 grub-core/kern/arm/misc.S: fix unaligned grub_uint64_t local variable 
The unaligned local in __aeabi_uidivmod leads to a store to a 64bit
value at an address that is not divisible by 8 (in grub_divmod64).
The compiler most likely generates a STRD instruction to store it and
this causes an exception.

Fixes Savannah bug #43632.

This includes improvements done by Leif Lindholm.
 2014-12-07 20:16:29 +03:00
Vladimir Serbinenko
5bda44d7f9 * grub-core/kern/arm/cache_armv6.S: Remove .arch directive. 
As these functions are used on pre-ARMv6 CPUs as well we don't want
	to make assembler assume that architecture is higher than default one.
 2013-12-25 23:31:42 +01:00
Vladimir Serbinenko
bbc52c228f Enable cache on ARM U-Boot port. 
Without it the port is reidiculously slow.
 2013-12-23 05:01:58 +01:00
Vladimir Serbinenko
943981ff65 Fix ARM cache maintainance. 
More code was converted from ASM to C for easier handling.
 2013-12-23 04:27:53 +01:00
Vladimir Serbinenko
adabfb5418 * grub-core/kern/arm/cache.c (grub_arm_disable_caches_mmu): Use v6 
algorithm on v5.

	Suggested by: Leif Lindholm.
 2013-12-22 22:33:35 +01:00
Vladimir Serbinenko
74fa9417e5 * grub-core/kern/arm/dl.c: Remove unnecessarry execution mode check. 2013-12-18 07:06:23 +01:00
Vladimir Serbinenko
d45067a290 Add explicit thumb interwork bx in asm files. 
Shouldn't matter for armv >= 5 but let's be safe.
 2013-12-17 14:50:44 +01:00
Vladimir Serbinenko
8c534b85f1 Revamp relocation handling. 
Move more code to common dl.c. Add missing veneers for arm and arm64.
	Decreases kernel size by 70 bytes on i386-pc (40-50 compressed)
 2013-12-06 09:18:55 +01:00
Vladimir Serbinenko
9ef81064a3 * grub-core/kern/arm/cache.S: Don't switch back to ARM mode when 
compiling to thumb2.
	* grub-core/kern/arm/cache_armv7.S: Likewise.
	* grub-core/lib/arm/setjmp.S: Likewise.
 2013-11-16 17:37:06 +01:00
Leif Lindholm
11a7793221 arm: delete superflouous save of r8 in grub_uboot_syscall 2013-11-16 15:56:09 +00:00
Leif Lindholm
593865b907 arm: fix u-boot port syscall interface va_arg handling 
Commit c9cd02c broke the u-boot syscall API for va_args that spill over
to the stack, causing the disk support to stop working. This patch
resolves the problem, while keeping the new, cleaner transition_space
handling.
 2013-11-16 14:12:12 +00:00
Vladimir Serbinenko
57ffe93485 * grub-core/kern/arm/cache_armv6.S: Remove special handling for 
clang (not necessarry with -no-integrated-as).
	* include/grub/symbol.h [__arm__]: Likewise.
 2013-11-14 10:05:19 +01:00
Leif Lindholm
035a26c16a * grub-core/kern/arm/misc.S: Make thumb2-compatible. 2013-11-14 01:33:06 +01:00
Vladimir Serbinenko
2bdd07195c * grub-core/kern/arm/cache.c (probe_caches): Move asm part to ... 
* grub-core/kern/arm/cache_armv6.S: ... here. This allows this
	asm to stay in arm even if surrounding is thumb.
 2013-11-13 09:58:52 +01:00
Vladimir Serbinenko
5e77d9cfc1 * grub-core/kern/arm/misc.S: Add __muldi3 and __aeabi_lmul. Those 
helper functions are needed for thumb.
 2013-11-13 09:52:33 +01:00
Vladimir Serbinenko
c9cd02c965 * grub-core/kern/arm/uboot/startup.S: Remove = by replacing with 
literal load.
	(grub_uboot_syscall): Save/restore r9 and align stack.
 2013-11-13 06:27:03 +01:00
Vladimir Serbinenko
8149861554 * grub-core/kern/arm/cache.S: Replace = with explicit litteral load. 2013-11-13 06:23:32 +01:00
Vladimir Serbinenko
ea57de18f8 * include/grub/symbol.h (END) [__arm__]: New macros. Replace all .end 
occurencies with END.
 2013-11-13 05:19:30 +01:00
Vladimir Serbinenko
c773faf05e Revert " * include/grub/symbol.h (ADDR): New macro. Replace all occurences of" 
This reverts commit 286551b4eb.
 2013-11-13 02:17:20 +01:00
Vladimir Serbinenko
513eeb61dd * grub-core/kern/arm/cache_armv6.S [__clang__]: Don't add .armv6 when 
compiling with clang.
 2013-11-13 01:08:47 +01:00
Vladimir Serbinenko
bc379c1aa1 * grub-core/kern/arm/uboot/startup.S: Use .org rather than assigning 
".".
 2013-11-13 01:06:30 +01:00
Vladimir Serbinenko
286551b4eb * include/grub/symbol.h (ADDR): New macro. Replace all occurences of 
=x with ADDR(x) in arm assembly.
	(END): New macro. Replace all .end with END.
 2013-11-13 01:04:56 +01:00
Vladimir Serbinenko
16057d6bbb Redirect all divisions to grub_divmod64. 2013-11-13 00:53:53 +01:00
Vladimir Serbinenko
ef28ee8bc1 Add missing includes of loader.h. 2013-11-13 00:43:03 +01:00
Vladimir Serbinenko
33690255c5 Fix grub_machine_fini bitrot. 
Reported by: Glenn Washburn.
 2013-11-10 13:33:26 +01:00
Vladimir Serbinenko
e0a7bffa1e * grub-core/kern/arm/misc.S (__aeabi_unwind_cpp_pr0): Add dummy to 
link with libgcc.
 2013-11-08 07:35:13 +01:00
Vladimir 'phcoder' Serbinenko
ff2d4dc41c * grub-core/kern/arm/dl_helper.c: Use more proper %p for pointer. 2013-10-12 07:50:26 +02:00
Vladimir 'phcoder' Serbinenko
29072e994e * grub-core/kern/arm/misc.S: Remove leftover ARM and THUMB. 2013-10-08 17:03:19 +02:00
Vladimir 'phcoder' Serbinenko
a5f6ade676 * grub-core/kern/arm/efi/startup.S: Remove thumb leftover. 2013-10-07 20:04:54 +02:00
Vladimir 'phcoder' Serbinenko
3b0f3aa2a7 * grub-core/kern/arm/efi/init.c: Rewrite timer fucntion. 2013-10-07 19:23:14 +02:00
Vladimir 'phcoder' Serbinenko
c7c177f07f * grub-core/kern/arm/dl.c (do_relocations): Accept and ignore 
R_ARM_V4BX.
 2013-10-03 23:55:06 +02:00
Vladimir 'phcoder' Serbinenko
17c8bc378f * grub-core/kern/arm/cache.c: Add v5 write-through cache support. 2013-10-03 23:29:57 +02:00
Leif Lindholm
e70d6736ff * kern/arm/cache.S: Correct access to ilinesz/dlinesz variables. 
Clean up stack manipulation (sync_caches_armv*)
 2013-09-19 09:21:24 +02:00
Francesco Lavra
d60c9a81ac Fix ARM cpuid probing 2013-06-07 16:56:24 +02:00
Vladimir 'phcoder' Serbinenko
470038745c Fix a bug and stick nearer to the specification, introduce armv6_unified. 2013-05-17 13:05:28 +02:00
Vladimir 'phcoder' Serbinenko
390df92f0b Detect cache type on runtime rather than compile time 2013-05-17 01:33:22 +02:00
Leif Lindholm
c59fe1d776 Leif's BSS fix 2013-05-16 16:30:41 +02:00
Leif Lindholm
72a21cf09b Leif's ARMv6 cache support 2013-05-16 16:23:31 +02:00
Vladimir 'phcoder' Serbinenko
5bac5d9ad6 * grub-core/partmap/dfly.c: New partition map. 2013-05-16 16:18:37 +02:00
Leif Lindholm
854f383c28 Move common function to dl_helper.c 2013-05-11 10:42:11 +02:00
Leif Lindholm
b385e0723b Leif's API fixes 2013-05-03 15:07:39 +02:00
Leif Lindholm
bb9f92b9b1 Leif's build fixes 2013-05-03 14:41:08 +02:00