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* powerpc/mpc8572ds: revise board specific timing for dual-rank DIMMsYork Sun2011-03-24-32/+78
| | | | | | | | Tested all possible values for clk_adjust and write_data_delay for dual rank UDIMM and RDIMM to revise the tables. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/85xx: Move RESET_VECTOR_ADDRESS into config.hKumar Gala2011-01-19-3/+1
| | | | | | | | | | | Rather than defining it config.mk we can set it in config.h and remove config.mk from several boards that don't need it. We mimic what 4xx does and introduce CONFIG_RESET_VECTOR_ADDRESS for config.h to set. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Wolfgang Denk <wd@denx.de>
* powerpc/85xx: Rework MPC8572DS pci_init_board to use common FSL PCIe codeKumar Gala2011-01-14-89/+10
| | | | | | | | | Remove duplicated code in MPC8572DS board and utilize the common fsl_pcie_init_board(). We also now dynamically setup the LAWs for PCI controllers based on which PCIe controllers are enabled. Signed-off-by: Chenhui Zhao <b26998@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* mpc85xx boards: initdram() cleanup/bugfixBecky Bruce2011-01-14-19/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Correct initdram to use phys_size_t to represent the size of dram; instead of changing this all over the place, and correcting all the other random errors I've noticed, create a common initdram that is used by all non-corenet 85xx parts. Most of the initdram() functions were identical, with 2 common differences: 1) DDR tlbs for the fixed_sdram case were set up in initdram() on some boards, and were part of the tlb_table on others. I have changed them all over to the initdram() method - we shouldn't be accessing dram before this point so they don't need to be done sooner, and this seems cleaner. 2) Parts that require the DDR11 erratum workaround had different implementations - I have adopted the version from the Freescale errata document. It also looks like some of the versions were buggy, and, depending on timing, could have resulted in the DDR controller being disabled. This seems bad. The xpedite boards had a common/fsl_8xxx_ddr.c; with this change only the 517 board uses this so I have moved the ddr code into that board's directory in xpedite517x.c Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/85xx: Cleanup SGMII detection and reportingKumar Gala2011-01-14-14/+12
| | | | | | | | Use new is_serdes_configured to determine if TSECs are in SGMII mode and report that on the various boards that use or can be configured in SGMII mode in board_eth_init() instead of in the PCI init code. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/8xxx: Replace is_fsl_pci_cfg with is_serdes_configuredKumar Gala2011-01-14-3/+4
| | | | | | | Now that we have serdes support for all 85xx/86xx/Pxxx chips we can replace the is_fsl_pci_cfg() code with the is_serdes_configured(). Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/85xx: Add support for booting from NAND on MPC8572DSKumar Gala2011-01-14-2/+20
| | | | | | | | Mimic support that exists on MPC8536DS on the MPC8572DS to allow booting from NAND. Signed-off-by: Jin Qing <b24347@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* Switch from archive libraries to partial linkingSebastien Carlier2010-11-17-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
* mpc85xx: Fix SERDES/eTSEC message indentationPeter Tyser2010-11-14-4/+4
| | | | | | | | | | | | | Previously some mpc85xx boards printed indented messages such as the following on bootup: printf(" eTSEC4 is in sgmii mode.\n"); printf(" Serdes2 disalbed\n"); The bootup appearance looks cleaner if the indentation is removed which aligns these messages with other bootup output. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> CC: galak@kernel.crashing.org
* fsl: Clean up printing of PCI boot infoPeter Tyser2010-11-14-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously boards used a variety of indentations, newline styles, and colon styles for the PCI information that is printed on bootup. This patch unifies the style to look like: ... NAND: 1024 MiB PCIE1: connected as Root Complex Scanning PCI bus 01 04 01 8086 1010 0200 00 04 01 8086 1010 0200 00 03 00 10b5 8112 0604 00 02 01 10b5 8518 0604 00 02 02 10b5 8518 0604 00 08 00 1957 0040 0b20 00 07 00 10b5 8518 0604 00 09 00 10b5 8112 0604 00 07 01 10b5 8518 0604 00 07 02 10b5 8518 0604 00 06 00 10b5 8518 0604 00 02 03 10b5 8518 0604 00 01 00 10b5 8518 0604 00 PCIE1: Bus 00 - 0b PCIE2: connected as Root Complex Scanning PCI bus 0d 0d 00 1957 0040 0b20 00 PCIE2: Bus 0c - 0d In: serial ... Signed-off-by: Peter Tyser <ptyser@xes-inc.com> CC: wd@denx.de CC: sr@denx.de CC: galak@kernel.crashing.org
* Makefile: move all Power Architecture boards into boards.cfgWolfgang Denk2010-10-18-4/+0
| | | | | | | | | | Clean up Makefile, and drop a lot of the config.mk files on the way. We now also automatically pick all boards that are listed in boards.cfg (and with all configurations), so we can drop the redundant entries from MAKEALL to avoid building these twice. Signed-off-by: Wolfgang Denk <wd@denx.de>
* Rename TEXT_BASE into CONFIG_SYS_TEXT_BASEWolfgang Denk2010-10-18-2/+2
| | | | | | | | | | | | The change is currently needed to be able to remove the board configuration scripting from the top level Makefile and replace it by a simple, table driven script. Moving this configuration setting into the "CONFIG_*" name space is also desirable because it is needed if we ever should move forward to a Kconfig driven configuration system. Signed-off-by: Wolfgang Denk <wd@denx.de>
* powerpc/85xx & 86xx: Rework ft_fsl_pci_setup to not require aliasesKumar Gala2010-07-20-9/+2
| | | | | | | | | | | Previously we used an alias the pci node to determine which node to fixup or delete. Now we use the new fdt_node_offset_by_compat_reg to find the node to update. Additionally, we replace the code in each board with a single macro call that makes assumes uniform naming and reduces duplication in this area. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* ppc/85xx: Convert MPC8572DS to using board common ICS307 codeKumar Gala2010-07-16-144/+1
| | | | Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* fsl: improve the PIXIS code and fix a few bugsTimur Tabi2010-04-07-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Refactor and document the Freescale PIXIS code, used on most 85xx and 86xx boards. This makes the code easier to read and more flexible. Delete pixis.h, because none of the exported functions were actually being used by any other file. Make all of the functions in pixis.c 'static'. Remove "#include pixis.h" from every file that has it. Remove some unnecessary #includes. Make 'pixis_base' into a macro, so that we don't need to define it in every function. Add "while(1);" loops at the end of functions that reset the board, so that execution doesn't continue while the reset is in progress. Replace in_8/out_8 calls with clrbits_8, setbits_8, or clrsetbits_8, where appropriate. Replace ulong/uint with their spelled-out equivalents. Remove unnecessary typecasts, changing the types of some variables if necessary. Add CONFIG_SYS_PIXIS_VCFGEN0_ENABLE and CONFIG_SYS_PIXIS_VBOOT_ENABLE to make it easier for specific boards to support variations in the PIXIS registers sets. No current boards appears to need this feature. Fix the definition of CONFIG_SYS_PIXIS_VBOOT_MASK for the MPC8610 HPCD. Apparently, "pixis_reset altbank" has never worked on this board. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* PCIe, USB: Replace 'end point' references with 'endpoint'Peter Tyser2010-01-17-3/+3
| | | | | | | | | When referring to PCIe and USB 'endpoint' is the standard naming convention. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Acked-by: Stefan Roese <sr@denx.de> Acked-by: Remy Bohmer <linux@bohmer.net>
* ppc/85xx: Map boot page guarded for MP bootKumar Gala2010-01-05-1/+1
| | | | | | | We already map the page cache-inhibited. There is no reason we shouldn't also be marking it guarded to prevent speculative accesses. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* ppc/85xx: Make flash TLB entry determined at runtime on FSL boardsKumar Gala2010-01-05-1/+1
| | | | | | | Rather than hard coding which TLB entry the FLASH is mapped with we can use find_tlb_idx to determine the entry. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* ppc/85xx: Move to using fsl_setup_hose on MPC8572 DSKumar Gala2010-01-05-8/+6
| | | | | | | | We can use fsl_setup_hose to determine if we are a agent/end-point or a host. Rather than using some SoC specific register we can just look at the PCI cfg space of the host controller to determine this. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* Revert "ppc/85xx/pci: fsl_pci_init: pcie agent mode support"Kumar Gala2009-11-04-3/+3
| | | | | | | | | | | This reverts commit 70ed869ea5f6b1d13d7b140c83ec0dcd8a127ddc. There isn't any need to modify the API for fsl_pci_init_port to pass the status of host/agent(end-point) status. We can determine that internally to fsl_pci_init_port. Revert the patch that makes the API change. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* ppc/85xx/pci: fsl_pci_init: pcie agent mode supportVivek Mahajan2009-10-27-3/+3
| | | | | | | | | | | | | | | Originally written by Jason Jin and Mingkai Hu for mpc8536. When QorIQ based board is configured as a PCIe agent, then unlock/enable inbound PCI configuration cycles and init a 4K inbound memory window; so that a PCIe host can access the PCIe agents SDRAM at address 0x0 * Supported in fsl_pci_init_port() after adding pcie_ep as a param * Revamped copyright in drivers/pci/fsl_pci_init.c * Mods in 85xx based board specific pci init after this change Signed-off-by: Vivek Mahajan <vivek.mahajan@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* ppc/85xx: Clean up use of LAWAR definesKumar Gala2009-09-24-3/+3
| | | | | | | | | On 85xx platforms we shouldn't be using any LAWAR_* defines but using the LAW_* ones provided by fsl-law.h. Rename any such uses and limit the LAWAR_ to the 83xx platform as the only user so we will get compile errors in the future. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* ppc/85xx: Clean up mpc8572DS PCI setup codeKumar Gala2009-09-24-157/+73
| | | | | | | Use new fsl_pci_init_port() that reduces amount of duplicated code in the board ports, use IO accessors and clean up printing of status info. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* ppc/85xx: Introduce RESET_VECTOR_ADDRESS to handle non-standard link addressKumar Gala2009-09-09-0/+2
| | | | | | | | | | Some board ports place TEXT_BASE at a location that would cause the RESET_VECTOR_ADDRESS not to be at 0xfffffffc when we link. By default we assume RESET_VECTOR_ADDRESS will be 0xfffffffc if the board doesn't explicitly set it. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Wolfgang Denk <wd@denx.de>
* ppc/8xxx: Refactor code to determine if PCI is enabled & agent/hostKumar Gala2009-09-08-11/+6
| | | | | | | | | | | Refactor the code into a simple bitmask lookup table that determines if a given PCI controller is enabled and if its in host/root-complex or agent/end-point mode. Each processor in the PQ3/MPC86xx family specified different encodings for the cfg_host_agt[] and cfg_IO_ports[] boot strapping signals. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 85xx: Init pci ethernet cards if we enable any on MPC8572DSKumar Gala2009-08-28-1/+2
| | | | Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 85xx: Move to a common linker scriptKumar Gala2009-08-28-143/+0
| | | | | | | | There are really no differences between all the 85xx linker scripts so we can just move to a single common one. Board code is still able to override the common one if need be. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 85xx: Remove redudant PLATFORM_CPPFLAGSKumar Gala2009-08-28-4/+0
| | | | | | | | | | | | | For historic reasons we had defined some additional PLATFORM_CPPFLAGS like: PLATFORM_CPPFLAGS += -DCONFIG_E500=1 PLATFORM_CPPFLAGS += -DCONFIG_MPC85xx=1 PLATFORM_CPPFLAGS += -DCONFIG_MPC8548=1 However these are all captured in the config.h and thus redudant. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* pci/fsl_pci_init: Fold fsl_pci_setup_inbound_windows into fsl_pci_initKumar Gala2009-08-28-9/+0
| | | | | | | | Every platform that calls fsl_pci_init calls fsl_pci_setup_inbound_windows before it calls fsl_pci_init. There isn't any reason to just call it from fsl_pci_init and simplify things a bit. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* pci/fsl_pci_init: Fold pci_setup_indirect into fsl_pci_initKumar Gala2009-08-28-7/+3
| | | | | | | | Every platform that calls fsl_pci_init calls pci_setup_indirect before it calls fsl_pci_init. There isn't any reason to just call it from fsl_pci_init and simplify things a bit. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 85xx/86xx: Replace in8/out8 with in_8/out_8 on FSL boardsKumar Gala2009-07-22-8/+14
| | | | | | | The pixis code used in8/out8 all over the place. Replace it with in_8/out_8 macros. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 85xx: Report which "bank" of NOR flash we are booting from on FSL boardsKumar Gala2009-07-22-3/+23
| | | | | | | | | | | | | | The p2020DS, MPC8536DS, MPC8572DS, MPC8544DS boards are capable of swizzling the upper address bits of the NOR flash we boot out of which creates the concept of "virtual" banks. This is useful in that we can flash a test of image of u-boot and reset to one of the virtual banks while still maintaining a working image in "bank 0". The PIXIS FPGA exposes registers on LBC which we can use to determine which "bank" we are booting out of (as well as setting which bank to boot out of). Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* fsl_pci: Move prototypes into fsl_pci.h and remove explicit externsKumar Gala2009-04-04-6/+0
| | | | Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* fsl_pci: Renamed immap_fsl_pci.h to fsl_pci.hKumar Gala2009-04-04-1/+1
| | | | | | | Rename the pci header for FSL HW so we can move some prototypes in there and stop doing explicit externs Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* Fix all linker script to handle all rodata sectionsTrent Piepho2009-03-20-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A recent gcc added a new unaligned rodata section called '.rodata.str1.1', which needs to be added the the linker script. Instead of just adding this one section, we use a wildcard ".rodata*" to get all rodata linker section gcc has now and might add in the future. However, '*(.rodata*)' by itself will result in sub-optimal section ordering. The sections will be sorted by object file, which causes extra padding between the unaligned rodata.str.1.1 of one object file and the aligned rodata of the next object file. This is easy to fix by using the SORT_BY_ALIGNMENT command. This patch has not be tested one most of the boards modified. Some boards have a linker script that looks something like this: *(.text) . = ALIGN(16); *(.rodata) *(.rodata.str1.4) *(.eh_frame) I change this to: *(.text) . = ALIGN(16); *(.eh_frame) *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) This means the start of rodata will no longer be 16 bytes aligned. However, the boundary between text and rodata/eh_frame is still aligned to 16 bytes, which is what I think the real purpose of the ALIGN call is. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
* 85xx: print boot header info to distinquish 36-bit addr map on MPC8572 DSKumar Gala2009-02-16-2/+6
| | | | | | | | Added some info that is printed out when we boot to distiquish if we built MPC8572DS_config vs MPC8572DS_36BIT_config since they have different address maps. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* Fixup SGMII PHY ids in the device treeAndy Fleming2009-02-16-0/+5
| | | | | | | | | | | The device tree's PHY addresses need to be fixed up if we're using the SGMII Riser Card. The 8572, 8536, and 8544 DS boards were modified to call this function. Code idea taken from Liu Yu <yu.liu@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
* 85xx: Fix bug in device tree setup in 36-bit physical confgKumar Gala2009-02-16-1/+2
| | | | | | | | | | In the 36-bit physical config for MPC8572DS when need the start address of memory and it size to be kept in phys_*_t instead of a ulong since we support >4G of memory in the config and ulong cant represent that. Otherwise we end up seeing the memory node in the device tree reporting back we have memory starting @ 0 and of size 0. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 85xx: Fix address map for 36-bit config of MPC8572DSKumar Gala2009-02-16-2/+4
| | | | | | | | | | When we introduced the 36-bit config of the MPC8572DS board we had the wrong PCI MEM bus address map. Additionally, the change to the address map exposes a small issue in our dummy read on the ULI bus. We need to use the new mapping functions to handle that read properly in the 36-bit config. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 85xx: Introduce CONFIG_SYS_PCI*_IO_VIRT for FSL boardsKumar Gala2009-01-23-1/+1
| | | | | | | | | Introduce a new define to seperate out the virtual address that PCI IO space is at from the physical address. In most situations these are mapped 1:1. However any code accessing the bus should use VIRT. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Andy Fleming <afleming@freescale.com>
* 85xx: Introduce CONFIG_SYS_PCI*_MEM_VIRT for FSL boardsKumar Gala2009-01-23-4/+4
| | | | | | | | | Introduce a new define to seperate out the virtual address that PCI memory is at from the physical address. In most situations these are mapped 1:1. However any code accessing the bus should use VIRT. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Andy Fleming <afleming@freescale.com>
* 85xx: Convert CONFIG_SYS_PCI*_IO_BASE to _IO_BUS for FSL boardsKumar Gala2009-01-23-3/+3
| | | | | | | Use CONFIG_SYS_PCI*_IO_BUS for the bus relative address instead of _IO_BASE so we are more explicit. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 85xx: Convert CONFIG_SYS_{PCI*,RIO*}_MEM_BASE to _MEM_BUS for FSL boardsKumar Gala2009-01-23-3/+3
| | | | | | | | Use CONFIG_SYS_{PCI,RIO}_MEM_BUS for the bus relative address instead of _MEM_BASE so we are more explicit. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Andy Fleming <afleming@freescale.com>
* 85xx: separate FLASH BASE virtual from physical addressKumar Gala2009-01-23-3/+3
| | | | | | | | | | Added a CONFIG_SYS_FLASH_BASE_PHYS for use as the physical address and maintain CONFIG_SYS_FLASH_BASE as the virtual address of the flash. This allows us to deal with 36-bit phys on these boards in the future. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Andy Fleming <afleming@freescale.com>
* 85xx: separate PIXIS virtual from physical addressKumar Gala2009-01-23-2/+2
| | | | | | | | | | Added a PIXIS_BASE_PHYS for use as the physical address and maintain PIXIS_BASE as the virtual address of the PIXIS fpga registers. This allows us to deal with 36-bit phys on these boards in the future. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Andy Fleming <afleming@freescale.com>
* Some changes of TLB entry setting for MPC8572DSHaiying Wang2009-01-13-4/+3
| | | | | | | | | | - Move the TLB entry of PIXIS_BASE from TLB0 to TLB1[8], because in CAMP mode, all the TLB0 entries will be invalidated after cpu1 brings up kernel, thus cpu0 can not access PIXIS_BASE anymore (any access will cause DataTLBError exception) - Set CONFIG_SYS_DDR_TLB_START to 9 for MPC8572DS board. Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
* PCIE2 and PCIE3 are decided by corresponing bit in devdisr instead of PCIE1 bitRoy Zang2009-01-13-2/+2
| | | | | | | PCIE2 and PCIE3 should be decided by corresponing bit in devdisr instead of PCIE1 bit. On MPC8572DS board, PCIE refers to PCIE1. Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
* Fix IO port selection issue on MPC8544DS and MPC8572DS boardsRoy Zang2009-01-13-3/+5
| | | | | | | | | | | | | | | | | The IO port selection is not correct on MPC8572DS and MPC8544DS board. This patch fixes this issue. For MPC8572 Port cfg_io_ports PCIE1 0x2, 0x3, 0x7, 0xb, 0xc, 0xf PCIE2 0x3, 0x7 PCIE3 0x7 For MPC8544 Port cfg_io_ports PCIE1 0x2, 0x3, 0x4, 0x5, 0x6, 0x7 PCIE2 0x4, 0x5, 0x6, 0x7 PCIE3 0x6, 0x7 Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
* 85xx: the DDR tlb is missed for the !CONFIG_SPD_EEPROM caseDave Liu2008-12-03-4/+2
| | | | | | | we need TLB entry for DDR at !SPD case. Signed-off-by: Dave Liu <daveliu@freescale.com> Acked-by: Andy Fleming <afleming@freescale.com>
* 85xx: remove the unused ddr_enable_ecc in the board fileDave Liu2008-12-03-10/+0
| | | | | | | | | | The DDR controller of 8548/8544/8568/8572/8536 processors have the ECC data init feature, and the new DDR code is using the feature, and we don't need the way with DMA to init memory any more. Signed-off-by: Dave Liu <daveliu@freescale.com> Acked-by: Andy Fleming <afleming@freescale.com>