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path: root/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
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2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-07-16powerpc/mpc85xx:Disable Debug TLB entry for non-minimal SPLPrabhakar Kushwaha
CONFIG_SPL_BUILD creates debug TLB entry, so disable it before init_tlbs. CONFIG_SPL_INIT_MINIMAL never creates any debug TLB entry, so no need of disable_tlb(). Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-06-20powerpc/mpc85xx:Disable Debug TLB entry before init_tlbsPrabhakar Kushwaha
init_tlbs() initialize all the TLB entries required for the system. So disable DEBUG TLB entry before TLB entries initialization. Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-06-20powerpc/mpc85xx:No NOR boot, do not compile IFC errata A003399Prabhakar Kushwaha
IFC errata A003399 is valid for IFC NOR boot i.e.if no on-board NOR flash or no NOR boot, do not compile its workaround. Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-05-24SECURE BOOT - Removed deletion of TLB entries codeRuchika Gupta
Boot ROM code creates TLB entries for 3.5G space before entering the u-boot. Earlier we were deleting these entries after early initialization of CPU. In recent past, code has been added to invalidate all these entries before relocation of u-boot code. So this code to delete TLB entries after CPU initialization is no longer required. Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com> Acked-by: Matthew McClintock <msm@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-07-06powerpc/85xx:Make debug exception vector accessiblePrabhakar Kushwaha
Debugging of e500 and e500v1 processer requires debug exception vecter (IVPR + IVOR15) to have valid and fetchable OP code. 1) While executing in translated space (AS=1), whenever a debug exception is generated, the MSR[DS/IS] gets cleared i.e. AS=0 and the processor tries to fetch an instruction from the debug exception vector (IVPR + IVOR15); since now we are in AS=0, the application needs to ensure the proper TLB configuration to have (IVOR + IVOR15) accessible from AS=0 also. Create a temporary TLB in AS0 to make sure debug exception verctor is accessible on debug exception. 2) Just after relocation in DDR, Make sure IVPR + IVOR15 points to valid opcode Signed-off-by: Radu Lazarescu <radu.lazarescu@freescale.com> Signed-off-by: Marius Grigoras <marius.grigoras@freescale.com> Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
2011-11-08fsl_ifc: Fixed a bug in the erratum handling code for IFC_A003399Poonam Aggrwal
Wrong pointer was being used to copy code into L2SRAM. Also removed the unreferenced variable l2srbar. Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-10-03powerpc/p4080: Add support for secure boot flowRuchika Gupta
Pre u-boot Flow: 1. User loads the u-boot image in flash 2. PBL/Configuration word is used to create LAW for Flash at 0xc0000000 (Please note that ISBC expects all these addresses, images to be validated, entry point etc within 0 - 3.5G range) 3. ISBC validates the u-boot image, and passes control to u-boot at 0xcffffffc. Changes in u-boot: 1. Temporarily map CONFIG_SYS_MONITOR_BASE to the 1M CONFIG_SYS_PBI_FLASH_WINDOW in AS=1. (The CONFIG_SYS_PBI_FLASH_WINDOW is the address map for the flash created by PBL/configuration word within 0 - 3.5G memory range. The u-boot image at this address has been validated by ISBC code) 2. Remove TLB entries for 0 - 3.5G created by ISBC code 3. Remove the LAW entry for the CONFIG_SYS_PBI_FLASH_WINDOW created by PBL/configuration word after switch to AS = 1 Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com> Signed-off-by: Kuldip Giroh <kuldip.giroh@freescale.com> Acked-by: Wood Scott-B07421 <B07421@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-09-29fsl_ifc: Add the workaround for erratum IFC A-003399(enabled on P1010)Poonam Aggrwal
Issue: Address masking doesn't work properly. When sum of the base address, defined by BA, and memory bank size, defined by AM, exceeds 4GB (0xffff_ffff) then AMASKn[AM] doesn't mask CSPRn[BA] bits. Impact: This will impact booting when we are reprogramming CSPR0(BA) and AMASK0(AMASK) while executing from NOR Flash. Workaround: Re-programming of CSPR(BA) and AMASK is done while not executing from NOR Flash. The code which programs the BA and AMASK is executed from L2-SRAM. Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-09-29powerpc/P1010: Add workaround for erratum P1010-A003549 (related to IFC)Poonam Aggrwal
Issue: Peripheral connected to IFC_CS3 may hamper booting from IFC. Impact: Boot from IFC may not be successful if IFC_CS3 is used. Workaround: If IFC_CS3 is used, gate IFC_CS3 while booting from NAND or NOR. Also Software should select IFC_CS3 using PMUXCR[26:27] = 0x01. Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-09-29powerpc/85xx: Expanding the window of CCSRBAR in AS=1 from 4k to 1MPoonam Aggrwal
For an IFC Erratum (A-003399) we will need to access IFC registers in cpu_init_early_f() so expand the TLB covering CCSR to 1M. Since we need a TLB to cover 1M we move to using TLB1 array for all the early mappings so we can cover various sizes beyond 4k. Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-09-29powerpc/85xx: relocate CCSR before creating the initial RAM areaTimur Tabi
Before main memory (DDR) is initialized, the on-chip L1 cache is used as a memory area for the stack and the global data (gd_t) structure. This is called the initial RAM area, or initram. The L1 cache is locked and the TLBs point to a non-existent address (so that there's no chance it will overlap main memory or any device). The L1 cache is also configured not to write out to memory or the L2 cache, so everything stays in the L1 cache. One of the things we might do while running out of initram is relocate CCSR. On reset, CCSR is typically located at some high 32-bit address, like 0xfe000000, and this may not be the best place for CCSR. For example, on 36-bit systems, CCSR is relocated to 0xffe000000, near the top of 36-bit memory space. On some future Freescale SOCs, the L1 cache will be forced to write to the backing store, so we can no longer have the TLBs point to non-existent address. Instead, we will point the TLBs to an unused area in CCSR. In order for this technique to work, CCSR needs to be relocated before the initram memory is enabled. Unlike the original CCSR relocation code in cpu_init_early_f(), the TLBs we create now for relocating CCSR are deleted after the relocation is finished. cpu_init_early_f() will still need to create a TLB for CCSR (at the new location) for normal U-Boot purposes. This is done to keep the impact to existing U-Boot code minimal and to better isolate the CCSR relocation code. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-04-21Move arch/ppc to arch/powerpcStefan Roese
As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Anatolij Gustschin <agust@denx.de>