2015-03-13 |
Initialise cpu ops after enabling data cache
...
The cpu-ops pointer was initialized before enabling the data cache in the cold
and warm boot paths. This required a DCIVAC cache maintenance operation to
invalidate any stale cache lines resident in other cpus.
This patch moves this initialization to the bl31_arch_setup() function
which is always called after the data cache and MMU has been enabled.
This change removes the need:
1. for the DCIVAC cache maintenance operation.
2. to initialise the CPU ops upon resumption from a PSCI CPU_SUSPEND
call since memory contents are always preserved in this case.
Change-Id: Ibb2fa2f7460d1a1f1e721242025e382734c204c6
Vikram Kanigiri
committed
on 13 Mar 2015
|
2014-08-15 |
Unmask SError interrupt and clear SCR_EL3.EA bit
...
This patch disables routing of external aborts from lower exception levels to
EL3 and ensures that a SError interrupt generated as a result of execution in
EL3 is taken locally instead of a lower exception level.
The SError interrupt is enabled in the TSP code only when the operation has not
been directly initiated by the normal world. This is to prevent the possibility
of an asynchronous external abort which originated in normal world from being
taken when execution is in S-EL1.
Fixes ARM-software/tf-issues#153
Change-Id: I157b996c75996d12fd86d27e98bc73dd8bce6cd5
Achin Gupta
committed
on 15 Aug 2014
|
2014-07-28 |
Simplify management of SCTLR_EL3 and SCTLR_EL1
...
This patch reworks the manner in which the M,A, C, SA, I, WXN & EE bits of
SCTLR_EL3 & SCTLR_EL1 are managed. The EE bit is cleared immediately after reset
in EL3. The I, A and SA bits are set next in EL3 and immediately upon entry in
S-EL1. These bits are no longer managed in the blX_arch_setup() functions. They
do not have to be saved and restored either. The M, WXN and optionally the C
bit are set in the enable_mmu_elX() function. This is done during both the warm
and cold boot paths.
Fixes ARM-software/tf-issues#226
Change-Id: Ie894d1a07b8697c116960d858cd138c50bc7a069
Achin Gupta
committed
on 28 Jul 2014
|
2014-06-23 |
Initialise CPU contexts from entry_point_info
...
Consolidate all BL3-1 CPU context initialization for cold boot, PSCI
and SPDs into two functions:
* The first uses entry_point_info to initialize the relevant
cpu_context for first entry into a lower exception level on a CPU
* The second populates the EL1 and EL2 system registers as needed
from the cpu_context to ensure correct entry into the lower EL
This patch alters the way that BL3-1 determines which exception level
is used when first entering EL1 or EL2 during cold boot - this is now
fully determined by the SPSR value in the entry_point_info for BL3-3,
as set up by the platform code in BL2 (or otherwise provided to BL3-1).
In the situation that EL1 (or svc mode) is selected for a processor
that supports EL2, the context management code will now configure all
essential EL2 register state to ensure correct execution of EL1. This
allows the platform code to run non-secure EL1 payloads directly
without requiring a small EL2 stub or OS loader.
Change-Id: If9fbb2417e82d2226e47568203d5a369f39d3b0f
Andrew Thoelke
committed
on 23 Jun 2014
|
2014-05-07 |
Set processor endianness immediately after RESET
...
SCTLR_EL3.EE is being configured too late in bl1_arch_setup() and
bl31_arch_setup() after data accesses have already occured on
the cold and warm boot paths.
This control bit must be configured immediately on CPU reset to
match the endian state of the firmware (little endian).
Fixes ARM-software/tf-issues#145
Change-Id: Ie12e46fbbed6baf024c30beb50751591bb8c8655
Andrew Thoelke
committed
on 7 May 2014
|
2014-05-06 |
Reduce deep nesting of header files
...
Reduce the number of header files included from other header
files as much as possible without splitting the files. Use forward
declarations where possible. This allows removal of some unnecessary
"#ifndef __ASSEMBLY__" statements.
Also, review the .c and .S files for which header files really need
including and reorder the #include statements alphabetically.
Fixes ARM-software/tf-issues#31
Change-Id: Iec92fb976334c77453e010b60bcf56f3be72bd3e
Dan Handley
committed
on 6 May 2014
|
2014-04-08 |
Define frequency of system counter in platform code
...
BL3-1 architecture setup code programs the system counter frequency
into the CNTFRQ_EL0 register. This frequency is defined by the
platform, though. This patch introduces a new platform hook that
the architecture setup code can call to retrieve this information.
In the ARM FVP port, this returns the first entry of the frequency
modes table from the memory mapped generic timer.
All system counter setup code has been removed from BL1 as some
platforms may not have initialized the system counters at this stage.
The platform specific settings done exclusively in BL1 have been moved
to BL3-1. In the ARM FVP port, this consists in enabling and
initializing the System level generic timer. Also, the frequency change
request in the counter control register has been set to 0 to make it
explicit it's using the base frequency. The CNTCR_FCREQ() macro has been
fixed in this context to give an entry number rather than a bitmask.
In future, when support for firmware update is implemented, there
is a case where BL1 platform specific code will need to program
the counter frequency. This should be implemented at that time.
This patch also updates the relevant documentation.
It properly fixes ARM-software/tf-issues#24
Change-Id: If95639b279f75d66ac0576c48a6614b5ccb0e84b
Sandrine Bailleux
committed
on 8 Apr 2014
|
Revert "Move architecture timer setup to platform-specific code"
...
This reverts commit 1c297bf
because it introduced a bug: the CNTFRQ_EL0 register was no
longer programmed by all CPUs. bl31_platform_setup() function
is invoked only in the cold boot path and consequently only
on the primary cpu.
A subsequent commit will correctly implement the necessary changes
to the counter frequency setup code.
Fixes ARM-software/tf-issues#125
Conflicts:
docs/firmware-design.md
plat/fvp/bl31_plat_setup.c
Change-Id: Ib584ad7ed069707ac04cf86717f836136ad3ab54
Sandrine Bailleux
committed
on 8 Apr 2014
|
2014-03-21 |
Remove partially qualified asm helper functions
...
Each ARM Trusted Firmware image should know in which EL it is running
and it should use the corresponding register directly instead of reading
currentEL and knowing which asm register to read/write
Change-Id: Ief35630190b6f07c8fbb7ba6cb20db308f002945
Vikram Kanigiri
authored
on 11 Mar 2014
Dan Handley
committed
on 21 Mar 2014
|
2014-03-10 |
Move architecture timer setup to platform-specific code
...
At present, bl1_arch_setup() and bl31_arch_setup() program the counter
frequency using a value from the memory mapped generic timer. The
generic timer however is not necessarily present on all ARM systems
(although it is architected to be present on all server systems).
This patch moves the timer setup to platform-specific code and updates
the relevant documentation. Also, CNTR.FCREQ is set as the specification
requires the bit corresponding to the counter's frequency to be set when
enabling. Since we intend to use the base frequency, set bit 8.
Fixes ARM-software/tf-issues#24
Change-Id: I32c52cf882253e01f49056f47c58c23e6f422652
Jeenu Viswambharan
authored
on 7 Jan 2014
Dan Handley
committed
on 10 Mar 2014
|
2014-02-20 |
Add support for BL3-2 in BL3-1
...
This patch adds the following support to the BL3-1 stage:
1. BL3-1 allows runtime services to specify and determine the security
state of the next image after BL3-1. This has been done by adding
the `bl31_set_next_image_type()` & `bl31_get_next_image_type()`
apis. The default security state is non-secure. The platform api
`bl31_get_next_image_info()` has been modified to let the platform
decide which is the next image in the desired security state.
2. BL3-1 exports the `bl31_prepare_next_image_entry()` function to
program entry into the target security state. It uses the apis
introduced in 1. to do so.
3. BL3-1 reads the information populated by BL2 about the BL3-2 image
into its internal data structures.
4. BL3-1 introduces a weakly defined reference `bl32_init()` to allow
initialisation of a BL3-2 image. A runtime service like the Secure
payload dispatcher will define this function if present.
Change-Id: Icc46dcdb9e475ce6575dd3f9a5dc7a48a83d21d1
Achin Gupta
authored
on 19 Feb 2014
Dan Handley
committed
on 20 Feb 2014
|
2014-01-17 |
Do not trap access to floating point registers
...
Traps when accessing architectural features are disabled by clearing bits
in CPTR_EL3 during early boot, including accesses to floating point
registers. The value of this register was previously undetermined, causing
unwanted traps to EL3. Future EL3 code (for example, context save/restore
code) may use floating point registers, although they are not used by current
code.
Also, the '-mgeneral-regs-only' flag is enabled in the GCC settings to
prevent generation of code that uses floating point registers.
Change-Id: I9a03675f6387bbbee81a6f2c9ccf81150db03747
Harry Liebel
authored
on 14 Jan 2014
Dan Handley
committed
on 17 Jan 2014
|
Update year in copyright text to 2014
...
Change-Id: Ic7fb61aabae1d515b9e6baf3dd003807ff42da60
Dan Handley
committed
on 17 Jan 2014
|
2013-12-05 |
Enable third party contributions
...
- Add instructions for contributing to ARM Trusted Firmware.
- Update copyright text in all files to acknowledge contributors.
Change-Id: I9311aac81b00c6c167d2f8c889aea403b84450e5
Dan Handley
committed
on 5 Dec 2013
|
2013-11-27 |
Unmask SError and Debug exceptions.
...
Any asynchronous exception caused by the firmware should be handled
in the firmware itself. For this reason, unmask SError exceptions
(and Debug ones as well) on all boot paths. Also route external
abort and SError interrupts to EL3, otherwise they will target EL1.
Change-Id: I9c191d2d0dcfef85f265641c8460dfbb4d112092
Sandrine Bailleux
authored
on 18 Nov 2013
Dan Handley
committed
on 27 Nov 2013
|
2013-10-25 |
ARMv8 Trusted Firmware release v0.2
Achin Gupta
authored
on 25 Oct 2013
James Morrissey
committed
on 25 Oct 2013
|