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https://github.com/brain-hackers/u-boot-brain
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c821b5f120
This patch (Part 1 of 2):
* Rolls up a suite of changes to enable correct primordial stack and
global data handling when the data cache is used for such a purpose
for PPC40x-variants (i.e. CFG_INIT_DCACHE_CS).
* Related to the first, unifies DDR2 SDRAM and ECC initialization by
eliminating redundant ECC initialization implementations and moving
redundant SDRAM initialization out of board code into shared 4xx
code.
* Enables MCSR visibility on the 405EX(r).
* Enables the use of the data cache for initial RAM on
both AMCC's Kilauea and Makalu and removes a redundant
CFG_POST_MEMORY flag from each board's CONFIG_POST value.
- Removed, per Stefan Roese's request, defunct memory.c file for
Makalu and rolled sdram_init from it into makalu.c.
With respect to the 4xx DDR initialization and ECC unification, there
is certainly more work that can and should be done (file renaming,
etc.). However, that can be handled at a later date on a second or
third pass. As it stands, this patch moves things forward in an
incremental yet positive way for those platforms that utilize this
code and the features associated with it.
Signed-off-by: Grant Erickson <gerickson@nuovations.com>
Signed-off-by: Stefan Roese <sr@denx.de>
117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/*----------------------------------------------------------------------------+
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| This source code has been made available to you by IBM on an AS-IS
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| basis. Anyone receiving this source is licensed under IBM
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| copyrights to use it in any way he or she deems fit, including
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| copying it, modifying it, compiling it, and redistributing it either
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| with or without modifications. No license under IBM patents or
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| patent applications is to be implied by the copyright license.
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| Any user of this software should understand that IBM cannot provide
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| technical support for this software and will not be responsible for
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| any consequences resulting from the use of this software.
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| Any person who transfers this source code or any derivative work
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| must include the IBM copyright notice, this paragraph, and the
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| preceding two paragraphs in the transferred software.
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| COPYRIGHT I B M CORPORATION 1999
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| LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
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+----------------------------------------------------------------------------*/
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#ifndef __PPC4XX_H__
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#define __PPC4XX_H__
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#if defined(CONFIG_440)
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#include <ppc440.h>
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#else
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#include <ppc405.h>
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#endif
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/*
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* Macro for generating register field mnemonics
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*/
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#define PPC_REG_BITS 32
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#define PPC_REG_VAL(bit, value) ((value) << ((PPC_REG_BITS - 1) - (bit)))
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/*
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* Elide casts when assembling register mnemonics
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*/
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#ifndef __ASSEMBLY__
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#define static_cast(type, val) (type)(val)
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#else
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#define static_cast(type, val) (val)
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#endif
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/*
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* Common stuff for 4xx (405 and 440)
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*/
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#define EXC_OFF_SYS_RESET 0x0100 /* System reset */
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#define _START_OFFSET (EXC_OFF_SYS_RESET + 0x2000)
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#define RESET_VECTOR 0xfffffffc
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#define CACHELINE_MASK (CFG_CACHELINE_SIZE - 1) /* Address mask for cache
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line aligned data. */
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#define CPR0_DCR_BASE 0x0C
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#define cprcfga (CPR0_DCR_BASE+0x0)
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#define cprcfgd (CPR0_DCR_BASE+0x1)
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#define SDR_DCR_BASE 0x0E
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#define sdrcfga (SDR_DCR_BASE+0x0)
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#define sdrcfgd (SDR_DCR_BASE+0x1)
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#define SDRAM_DCR_BASE 0x10
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#define memcfga (SDRAM_DCR_BASE+0x0)
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#define memcfgd (SDRAM_DCR_BASE+0x1)
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#define EBC_DCR_BASE 0x12
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#define ebccfga (EBC_DCR_BASE+0x0)
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#define ebccfgd (EBC_DCR_BASE+0x1)
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/*
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* Macros for indirect DCR access
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*/
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#define mtcpr(reg, d) do { mtdcr(cprcfga,reg);mtdcr(cprcfgd,d); } while (0)
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#define mfcpr(reg, d) do { mtdcr(cprcfga,reg);d = mfdcr(cprcfgd); } while (0)
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#define mtebc(reg, d) do { mtdcr(ebccfga,reg);mtdcr(ebccfgd,d); } while (0)
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#define mfebc(reg, d) do { mtdcr(ebccfga,reg);d = mfdcr(ebccfgd); } while (0)
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#define mtsdram(reg, d) do { mtdcr(memcfga,reg);mtdcr(memcfgd,d); } while (0)
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#define mfsdram(reg, d) do { mtdcr(memcfga,reg);d = mfdcr(memcfgd); } while (0)
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#define mtsdr(reg, d) do { mtdcr(sdrcfga,reg);mtdcr(sdrcfgd,d); } while (0)
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#define mfsdr(reg, d) do { mtdcr(sdrcfga,reg);d = mfdcr(sdrcfgd); } while (0)
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#ifndef __ASSEMBLY__
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typedef struct
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{
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unsigned long freqDDR;
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unsigned long freqEBC;
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unsigned long freqOPB;
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unsigned long freqPCI;
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unsigned long freqPLB;
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unsigned long freqTmrClk;
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unsigned long freqUART;
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unsigned long freqProcessor;
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unsigned long freqVCOHz;
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unsigned long freqVCOMhz; /* in MHz */
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unsigned long pciClkSync; /* PCI clock is synchronous */
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unsigned long pciIntArbEn; /* Internal PCI arbiter is enabled */
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unsigned long pllExtBusDiv;
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unsigned long pllFbkDiv;
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unsigned long pllFwdDiv;
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unsigned long pllFwdDivA;
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unsigned long pllFwdDivB;
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unsigned long pllOpbDiv;
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unsigned long pllPciDiv;
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unsigned long pllPlbDiv;
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} PPC4xx_SYS_INFO;
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#endif /* __ASSEMBLY__ */
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#endif /* __PPC4XX_H__ */
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