- 14 Oct, 2010 28 commits
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Benjamin Herrenschmidt authored
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Josh Boyer authored
Make sure the new bluestone board is selected for the multiplatform defconfig. Also build logfs and squashfs as modules. Signed-off-by:Josh Boyer <jwboyer@linux.vnet.ibm.com>
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Timur Tabi authored
The PowerPC Book-E watchdog driver (booke_wdt.c) defines a default timeout value in the code based on whether it's a Freescale Book-E part of not. Instead of having hard-coded values in the driver, make it a Kconfig option. As newer chips gets faster, the current default values become less appropriate, since the timeout sometimes occurs before the kernel finishes booting. Making the value a Kconfig option allows BSPs to configure a new value without requiring the wdt_period command-line parameter to be set. Signed-off-by:
Timur Tabi <timur@freescale.com> Signed-off-by:
Kumar Gala <galak@kernel.crashing.org>
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Shaohui Xie authored
Add some comments to make sRIO registers map better readable. Signed-off-by:
Shaohui Xie <b21989@freescale.com> Signed-off-by:
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Kumar Gala authored
The p5020 SoC from Freescale is the first 64-bit Book-E processor and utilizes the two e5500 cores. Adding a defconfig that enables basic kernel for e5500 based processors. Also added the p5020 / e5500 support to the ppc64e defconfig. Signed-off-by: -
Kumar Gala authored
The P5020DS is in the same family of boards as the P4080 DS and thus shares the corenet_ds code. Signed-off-by: -
Kumar Gala authored
On Freescale parts typically have TLB array for large mappings that we can bolt the linear mapping into. We utilize the code that already exists on PPC32 on the 64-bit side to setup the linear mapping to be cover by bolted TLB entries. We utilize a quarter of the variable size TLB array for this purpose. Additionally, we limit the amount of memory to what we can cover via bolted entries so we don't get secondary faults in the TLB miss handlers. We should fix this limitation in the future. Signed-off-by: -
Kumar Gala authored
Update setup_page_sizes() to support for a MMU v1.0 FSL style MMU implementation. In such a processor, we don't have TLB0PS or EPTCFG registers (and access to these registers may cause exceptions). We need to parse the older format of TLBnCFG for page size support. Additionaly, assume since we are an FSL implementation that we have 2 TLB arrays and the second array contains the variable size pages. Signed-off-by: -
Kumar Gala authored
The new e5500 core is similar to the e500mc core but adds 64-bit support. We support running it in 32-bit mode as it is identical to the e500mc. Signed-off-by: -
Harninder Rai authored
It adds cache-sram support in P1/P2 QorIQ platforms as under: * A small abstraction over powerpc's remote heap allocator * Exports mpc85xx_cache_sram_alloc()/free() APIs * Supports only one contiguous SRAM window * Drivers can do the following in Kconfig to use these APIs "select FSL_85XX_CACHE_SRAM if MPC85xx" * Required SRAM size and the offset where SRAM should be mapped must be provided at kernel command line as : cache-sram-size=<value> cache-sram-offset=<offset> Signed-off-by:Harninder Rai <harninder.rai@freescale.com> Signed-off-by:
Vivek Mahajan <vivek.mahajan@freescale.com> Signed-off-by:
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Timur Tabi authored
The device tree for Freescale's P1022DS reference board is missing the node for the ngPIXIS FPGA. Signed-off-by:
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Kumar Gala authored
arch/powerpc/kernel/paca.c: In function 'allocate_lppacas': arch/powerpc/kernel/paca.c:111:1: error: parameter name omitted arch/powerpc/kernel/paca.c:111:1: error: parameter name omitted Signed-off-by: -
Kumar Gala authored
The P3041DS is in the same family of boards as the P4080DS and thus shares the corenet_ds code. Signed-off-by: -
Scott Wood authored
On an arch 2.06 hypervisor, a pending perfmon interrupt will be delivered to the hypervisor at any point the guest is running, regardless of MSR[EE]. In order to reflect this interrupt, the hypervisor has to mask the interrupt in PMGC0 -- and set MSRP[PMMP] to intercept futher guest accesses to the PMRs to detect when to unmask (and prevent the guest from unmasking early, or seeing inconsistent state). This has the side effect of ignoring any changes the guest makes to MSR[PMM], so wait until after the interrupt is clear, and thus the hypervisor should have cleared MSRP[PMMP], before setting MSR[PMM]. The counters wil not actually run until PMGC0[FAC] is cleared in pmc_start_ctrs(), so this will not reduce the effectiveness of PMM. Signed-off-by:
Scott Wood <scottwood@freescale.com> Signed-off-by:
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Kumar Gala authored
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Kumar Gala authored
Add 'fsl,qoriq-gpio' compatiable to the list we search for to bind against for mpc8xxx_gpio. This compatiable will be used on P1-P5xxx QorIQ devices like P4080. Signed-off-by: -
Matthew McClintock authored
First we check to see if we are the first core booting up. This is accomplished by comparing the boot_cpuid with -1, if it is we assume this is the first core coming up. Secondly, we need to update the initial thread info structure to reflect the actual cpu we are running on otherwise smp_processor_id() and related functions will return the default initialization value of the struct or 0. Signed-off-by:
Matthew McClintock <msm@freescale.com> Signed-off-by:
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Timur Tabi authored
Like the MPC8610 HPCD, the P1022DS ASoC DMA driver probes on individual DMA channel nodes, so the DMA controller nodes' compatible string must be listed in p1022_ds_ids[] to work. Signed-off-by:
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Matthew McClintock authored
The first global-utilities node might not contain the rstcr property, so we should search all the nodes Signed-off-by:
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Paul Gortmaker authored
There exists a four line chunk of code, which when configured for 64 bit address space, can incorrectly set certain page flags during the TLB creation. It turns out that this is code which isn't used, but might still serve a purpose. Since it isn't obvious why it exists or why it causes problems, the below description covers both in detail. For powerpc bootstrap, the physical memory (at most 768M), is mapped into the kernel space via the following path: MMU_init() | + adjust_total_lowmem() | + map_mem_in_cams() | + settlbcam(i, virt, phys, cam_sz, PAGE_KERNEL_X, 0); On settlbcam(), the kernel will create TLB entries according to the flag, PAGE_KERNEL_X. settlbcam() { ... TLBCAM[index].MAS1 = MAS1_VALID | MAS1_IPROT | MAS1_TSIZE(tsize) | MAS1_TID(pid); ^ These entries cannot be invalidated by the kernel since MAS1_IPROT is set on TLB property. ... if (flags & _PAGE_USER) { TLBCAM[index].MAS3 |= MAS3_UX | MAS3_UR; TLBCAM[index].MAS3 |= ((flags & _PAGE_RW) ? MAS3_UW : 0); } For classic BookE (flags & _PAGE_USER) is 'zero' so it's fine. But on boards like the the Freescale P4080, we want to support 36-bit physical address on it. So the following options may be set: CONFIG_FSL_BOOKE=y CONFIG_PTE_64BIT=y CONFIG_PHYS_64BIT=y As a result, boards like the P4080 will introduce PTE format as Book3E. As per the file: arch/powerpc/include/asm/pgtable-ppc32.h * #elif defined(CONFIG_FSL_BOOKE) && defined(CONFIG_PTE_64BIT) * #include <asm/pte-book3e.h> So PAGE_KERNEL_X is __pgprot(_PAGE_BASE | _PAGE_KERNEL_RWX) and the book3E version of _PAGE_KERNEL_RWX is defined with: (_PAGE_BAP_SW | _PAGE_BAP_SR | _PAGE_DIRTY | _PAGE_BAP_SX) Note the _PAGE_BAP_SR, which is also defined in the book3E _PAGE_USER: #define _PAGE_USER (_PAGE_BAP_UR | _PAGE_BAP_SR) /* Can be read */ So the possibility exists to wrongly assign the user MAS3_U<RWX> bits to kernel (PAGE_KERNEL_X) address space via the following code fragment: if (flags & _PAGE_USER) { TLBCAM[index].MAS3 |= MAS3_UX | MAS3_UR; TLBCAM[index].MAS3 |= ((flags & _PAGE_RW) ? MAS3_UW : 0); } Here is a dump of the TLB info from Simics with the above code present: ------ L2 TLB1 GT SSS UUU V I Row Logical Physical SS TLPID TID WIMGE XWR XWR F P V ----- ----------------- ------------------- -- ----- ----- ----- --- --- - - - 0 c0000000-cfffffff 000000000-00fffffff 00 0 0 M XWR XWR 0 1 1 1 d0000000-dfffffff 010000000-01fffffff 00 0 0 M XWR XWR 0 1 1 2 e0000000-efffffff 020000000-02fffffff 00 0 0 M XWR XWR 0 1 1 Actually this conditional code was used for two legacy functions: 1: support KGDB to set break point. KGDB already dropped this; now uses its core write to set break point. 2: io_block_mapping() to create TLB in segmentation size (not PAGE_SIZE) for device IO space. This use case is also removed from the latest PowerPC kernel. However, there may still be a use case for it in the future, like large user pages, so we can't remove it entirely. As an alternative, we match on all bits of _PAGE_USER instead of just any bits, so the case where just _PAGE_BAP_SR is set can't sneak through. With this done, the TLB appears without U having XWR as below: ------- L2 TLB1 GT SSS UUU V I Row Logical Physical SS TLPID TID WIMGE XWR XWR F P V ----- ----------------- ------------------- -- ----- ----- ----- --- --- - - - 0 c0000000-cfffffff 000000000-00fffffff 00 0 0 M XWR 0 1 1 1 d0000000-dfffffff 010000000-01fffffff 00 0 0 M XWR 0 1 1 2 e0000000-efffffff 020000000-02fffffff 00 0 0 M XWR 0 1 1 Signed-off-by:Tiejun Chen <tiejun.chen@windriver.com> Signed-off-by:
Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by:
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Ilya Yanok authored
This patch adds support for MPC8308 P1M board. Supported devices: DUART Dual Ethernet NOR flash Both I2C controllers USB in peripheral mode PCI Express Signed-off-by:
Ilya Yanok <yanok@emcraft.com> Signed-off-by:
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Matthew McClintock authored
When we do an mpic_reset_core we need to make sure the dcache is flushed. Signed-off-by:
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Matthew McClintock authored
Make kexec_down_cpus atmoic since it will be incremented by all cores as they are coming down. Remove duplicate calls to mpc85xx_smp_kexec_down, now it's called by the crash and normal kexec pathway only once. Increase the timeout to wait for other cores to shutdown. Signed-off-by:
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Matthew McClintock authored
We no longer need to call this explicitly as a generic version is called by default. Signed-off-by:
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Matthew McClintock authored
Right now just the kexec crash pathway turns turns off the interrupts. Pull that out and make a generic version for use elsewhere Signed-off-by:
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Timur Tabi authored
Register the __init and __exit functions in the PowerPC Book-E Watchdog driver as module entry/exit functions, and modify the Kconfig entry. Add a .release method for the PowerPC Book-E Watchdog driver, so that the watchdog is disabled when the driver is closed. Loosely based on original code from Jiang Yutang <b14898@freescale.com>. Signed-off-by:
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Timur Tabi authored
Export the global variable 'ppc_tb_freq', so that modules (like the Book-E watchdog driver) can use it. To maintain consistency, ppc_proc_freq is changed to a GPL-only export. This is okay, because any module that needs this symbol should be an actual Linux driver, which must be GPL-licensed. Signed-off-by:
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Kumar Gala authored
The following commit broke 83xx because it assumed the 83xx platforms exposed the "IMMR" address in BAR0 like the 85xx/86xx/QoriQ devices do: commit 3da34aae Author: Kumar Gala <galak@kernel.crashing.org> Date: Tue May 12 15:51:56 2009 -0500 powerpc/fsl: Support unique MSI addresses per PCIe Root Complex However that is not true, so we have to search through the inbound window settings on 83xx to find which one matches the IMMR address to determine its PCI address. Reported-by:
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- 13 Oct, 2010 12 commits
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Tirumala Marri authored
This patch adds CPU, device tree, defconfig and bluestone board support for APM821xx SoC. Signed-off-by:
Tirumala R Marri <tmarri@apm.com> Signed-off-by:
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matt mooney authored
Replace EXTRA_CFLAGS with ccflags-y and EXTRA_AFLAGS with asflags-y. Signed-off-by:
matt mooney <mfm@muteddisk.com> Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Arnd Bergmann authored
The default for llseek is changing, so we need explicit operations everywhere. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Cc: Jeremy Kerr <jk@ozlabs.org> Cc: linuxppc-dev@ozlabs.org Signed-off-by:
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Nishanth Aravamudan authored
Current firmware only allows us to send IRQs to the first processor or all processors. We currently check to see if the passed in mask is equal to the all_mask, but the firmware is only considering whether the request is for the equivalent of the possible_mask. Thus, we think the request is for some subset of CPUs and only assign IRQs to the first CPU (on systems without irqbalance running) as evidenced by /proc/interrupts. By using possible_mask instead, we account for this and proper interleaving of interrupts occurs. Signed-off-by:
Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by:
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Nishanth Aravamudan authored
Use set_dma_ops and remove unused oddly-named temp pointer sd. Signed-off-by:
Milton Miller <miltonm@bga.com> Signed-off-by:
Grant Likely <grant.likely@secretlab.ca> Signed-off-by:
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Nishanth Aravamudan authored
While looking at some code paths I came across this code that zeros memory then copies over the entire length. Signed-off-by:
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Nishanth Aravamudan authored
Release the TCE table as the XXX suggests, except on FW_FEATURE_ISERIES, where the tables are allocated globally and reused. Signed-off-by:
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Nishanth Aravamudan authored
The kernel doc for device_register (and device_initialize) very clearly state to call put_device not kfree after calling, even on error. Signed-off-by:
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Nishanth Aravamudan authored
The current check is wrong because it does not take the DMA offset intot account, and in the case of a driver which doesn't actually support 64bits would falsely report that device as working. Signed-off-by:
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Nishanth Aravamudan authored
The table offset is in entries, each of which imply a dma address of an IOMMU page. Also, we should check the device can reach the whole IOMMU table. Signed-off-by:
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Nishanth Aravamudan authored
BUID_HI and BUID_LO are used to pass data to call_rtas, which expects ints or u32s. But the macro doesn't cast the return, so the result is still u64. Use the upper_32_bits and lower_32_bits macros that have been added to kernel.h. Found by getting printf format errors trying to debug print the args, no actual code change for 64 bit kernels where the macros are actually used. Signed-off-by:
Linas Vepstas <linasvepstas@gmail.com> Signed-off-by:
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Julia Lawall authored
The function has an unsigned return type, but returns a negative constant to indicate an error condition. The result of calling the function is always stored in a variable of type (signed) int, and thus unsigned can be dropped from the return type. A sematic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @exists@ identifier f; constant C; @@ unsigned f(...) { <+... * return -C; ...+> } // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Acked-by:
Olof Johansson <olof@lixom.net> Signed-off-by:
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