With the new LAW interface (set_next_law) we can move to letting the
system allocate which LAWs are used for what purpose. This makes life
a bit easier going forward with the new DDR code.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Acked-by: Jon Loeliger <jdl@freescale.com>
Acked-by: Becky Bruce <becky.bruce@freescale.com>
Make it so we keep track of which LAWs have allocated and provide
a function (set_next_law) which can allocate a LAW for us if one is
free.
In the future we will move to doing more "dynamic" LAW allocation
since the majority of users dont really care about what LAW number
they are at.
Also, add CONFIG_MPC8540 or CONFIG_MPC8560 to those boards which needed them
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>
The boot output is now aligned poperly with other boot output
lines, e.g.:
FLASH: 128 MB
L2: 512 KB enabled
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
The current cpu identification code is used just to return the name
of the processor at boot. There are some other locations that the name
is useful (device tree setup). Expose the functionality to other bits
of code.
Also, drop the 'E' suffix and add it on by looking at the SVR version
when we print this out. This is mainly to allow the most flexible use
of the name. The device tree code tends to not care about the 'E' suffix.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Currently, END_OF_RAM is used by the trap code to determine if
we should attempt to access the stack pointer or not. However,
on systems with a lot of RAM, only a subset of the RAM is
guaranteed to be mapped in and accessible. Change END_OF_RAM
to use get_effective_memsize() instead of using the raw ram
size out of the bd.
Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
This commit gets rid of a huge amount of silly white-space issues.
Especially, all sequences of SPACEs followed by TAB characters get
removed (unless they appear in print statements).
Also remove all embedded "vim:" and "vi:" statements which hide
indentation problems.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Newer gcc's might be configured to enable autovectorization by default.
If we happen to build with one of those compilers we will get SPE
instructions in random code.
-mno-spe disables the compiler for automatically generating SPE
instructions without our knowledge.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* adjust __spin_table alignment to match ePAPR v0.94 spec
* loop over all cpus when determing who is up. This fixes an issue if
the "boot cpu" isn't core0. The "boot cpu" will already be in the
cpu_up_mask so there is no harm
* Added some protection in the code to ensure proper behavior. These
changes are explicitly needed but don't hurt:
- Added eieio to ensure the "hot word" of the table is written after
all other table updates have occurred.
- Added isync to ensure we don't prefetch loading of table entries
until we a released
These issues we raised by Dave Liu.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
eg. because of rounding error we can get 799Mhz instead of 800Mhz.
Introduced DIV_ROUND_UP and roundup taken from linux kernel.
Signed-off-by: Dejan Minic <minic@freescale.com>
Signed-off-by: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Andy Fleming <afleming@freescale.com>
Some 85xx chips use CCB as the base clock for the I2C. Some use CCB/2, and
some use CCB/3. There is no pattern that can be used to determine which
chips use which frequency, so the only way to determine is to look up the
actual SOC designation and use the right value for that SOC.
Update immap_85xx.h to include the GUTS PORDEVSR2 register.
Signed-off-by: Timur Tabi <timur@freescale.com>
We were looking at the wrong memory offset to determine of a secondary
cpu had been spun up or not. Also added a warning message if the
all the secondary cpus we expect don't spin up.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The recent change introduced by 'Update SVR numbers to expand support'
now requires that we use SVR_SOC_VER instead of SVR_VER if we want
to compare against a particular processor id.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Provide a board_lmb_reserve helper function to ensure we reserve
the page of memory we are using for the boot page translation code.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The following changes are needed to be inline with ePAPR v0.81:
* r4, r5 and now always set to 0 on boot release
* r7 is used to pass the size of the initial map area (IMA)
* EPAPR_MAGIC value changed for book-e processors
* changes in the spin table layout
* spin table supports a 64-bit physical release address
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
get_ddr_freq() and get_bus_freq() used get_sys_info() each time they were
called. However, get_sys_info() recalculates extraneous information when
called each time. Have get_ddr_freq() and get_bus_freq() return memoized
values from global_data instead.
Signed-off-by: James Yang <James.Yang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Show the DDR memory data rate in addition to the memory clock
frequency. For DDR/DDR2 memories the memory data rate is 2x the
memory clock.
Signed-off-by: James Yang <James.Yang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Speed up get_tbclk() by referencing pre-computed bus clock
frequency value from global data instead of sys_info_t. Fix
rounding of result to nearest; previously it was rounding
upwards.
Signed-off-by: James Yang <James.Yang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
FSL has taken to using SVR[16:23] as an SOC sub-version field. This
is used to distinguish certain variants within an SOC family. To
account for this, we add the SVR_SOC_VER() macro, and update the SVR_*
constants to reflect the larger value. We also add SVR numbers for all
of the current variants. Finally, to make things neater, rather than
use an enormous switch statement to print out the CPU type, we create
and array of SVR/name pairs (using a macro), and print out the CPU name
that matches the SVR SOC version.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Added the cpu command that provides a generic mechanism to get status,
reset, and release secondary cores in multicore processors.
Added support for using the ePAPR defined spin-table mechanism on 85xx.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Added the cpu command that provides a generic mechanism to get status,
reset, and release secondary cores in multicore processors.
Added support for using the ePAPR defined spin-table mechanism on 85xx.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
When we go to 36-bit physical addresses we need to keep the concept of
the physical CCSRBAR address seperate from the virtual one.
For the majority of boards CFG_CCSBAR_PHYS == CFG_CCSRBAR
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
There is no reason to icbi when invalidating the temporary stack in
the d-cache. Its impossible on e500 to have the i-cache contain
any addresses in the temp stack and it can be problematic in generating
transactions on the bus to non-valid addresses.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The source vector for the ECM was being set to 2,
but that's what the source vector for DDR was being
set to. Change it to 1.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Commit 0db37dc... (and some others) changed the INIT_RAM TLB
mappings to be unguarded. This collided with an existing "bug"
where the mappings for the INIT_RAM were being kept around.
This meant that speculative loads to those addresses were
succeeding in the TLB, and going out to the bus, where they
were causing an exception (there's nothing at that address). The
Flash code was coincidentally causing such a speculative load.
Rather than go back to mapping the INIT RAM as guarded, we fix
it so that the entries for the INIT_RAM are invalidated. Thus
the speculative loads will fail in the TLB, and have no effect.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Update global_data to define i2c1_clk and i2c2_clk to 85xx and 86xx.
Update the get_clocks() function in 85xx and 86xx to determine the I2C
clock frequency and store it in gd->i2c1_clk and gd->i2c2_clk.
Signed-off-by: Timur Tabi <timur@freescale.com>
R29 was an unlucky choice as with recent toolchains (gcc-4.2.x) gcc
will refuse to use load/store multiple insns; instead, it issues a
list of simple load/store instructions upon function entry and exit,
resulting in bigger code size, which in turn makes the build for a
few boards fail.
Use r2 instead.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Move the flat device tree setup for QE related devices into
a common file shared between 83xx & 85xx platforms that have QE's.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Now that all boards have been converted, remove old config code and the
config option for the new style.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Reworked the initial processor initialzation sequence:
* introduced cpu_early_init_f that is run in address space 1 (AS=1)
* Moved TLB/LAW and CCSR init into cpu_early_init_f()
* Reworked initial asm code to do most of the core init before TLBs
The main reasons for these changes are to allow handling of 36-bit phys
addresses in the future and some of the issues that will exist when we
do that.
There are a few caveats on what can be initialized via the LAW and TLB
static tables:
* TLB entry 14/15 can't be initialized via the TLB table
* any LAW that covers the implicit boot window (4G-8M to 4G) must map to
the code that is currently executing.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Add a set of functions to manipulate TLB entries:
* set_tlb() - write a tlb entry
* invalidate_tlb() - invalidate a tlb array
* disable_tlb() - disable a variable size tlb entry
* init_tlbs() - setup initial tlbs based on static table
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Move the initialization of the LAWs into C code and provide an API
to allow modification of LAWs after init.
Board code is responsible to provide a law_table and num_law_entries.
We should be able to use the same code on 86xx as well.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Define the layout of a binary blob that contains a QE firmware and instructions
on how to upload it. Add function qe_upload_firmware() to parse the blob and
perform the actual upload. Add command-line command "qe fw" to take a firmware
blob in memory and upload it. Update ft_cpu_setup() on 85xx to create the
'firmware' device tree node if U-Boot has uploaded a firmware. Fully define
'struct rsp' in immap_qe.h to include the actual RISC Special Registers.
Signed-off-by: Timur Tabi <timur@freescale.com>
Either use the standard defines in asm/cache.h or grab the information
at runtime from the L1CFG SPR.
Also, minor cleanup in cache.h to make the code a bit more readable.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The old macros made it difficult to know what WIMGE and perm bits
were set for a TLB entry. Actually use the bit masks for these items
since they are only a single bit.
Also moved the macros into mmu.h out of e500.h since they aren't specific
to e500.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The MPC8572 introduces the concept of an asynchronous DDR clock with
regards to the platform clock.
Introduce get_ddr_freq() to report the DDR freq regardless of sync/async
mode.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
In the future the offsets to various blocks may not be in same location.
Move to using CFG_MPC85xx_*_ADDR as the base of the registers
instead of getting it via &immap.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
In the future the offsets to various blocks may not be in same location.
Move to using CFG_MPC85xx_CPM_ADDR as the base of the CPM registers
instead of getting it via &immap->im_cpm.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
