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Introduce the CONFIG_SYS_CCSRBAR_PHYS_HIGH and CONFIG_SYS_CCSRBAR_PHYS_LOW macros, which contain the high and low portions of CONFIG_SYS_CCSRBAR_PHYS. This is necessary for the assembly-language code that relocates CCSR, since the assembler does not understand 64-bit constants. CONFIG_SYS_CCSRBAR_PHYS is automatically defined from the CONFIG_SYS_CCSRBAR_PHYS_HIGH and CONFIG_SYS_CCSRBAR_PHYS_LOW macros, so it should not be defined in a board header file. Similarly, CONFIG_SYS_CCSRBAR_DEFAULT is defined for each SOC in config_mpc85xx.h, so it should also not be defined in the board header file. CONFIG_SYS_CCSR_DO_NOT_RELOCATE is a "short-cut" macro that guarantees that CONFIG_SYS_CCSRBAR_PHYS is set to the same value as CONFIG_SYS_CCSRBAR_DEFAULT, and so CCSR will not be relocated. Since CONFIG_SYS_CCSRBAR_DEFAULT is locked to a fixed value, multi-stage U-Boot builds (e.g. NAND) are required to relocate CCSR only during the last stage (i.e. the "real" U-Boot). All other stages should define CONFIG_SYS_CCSR_DO_NOT_RELOCATE to ensure that CCSR is not relocated. README is updated with descriptions of all the CONFIG_SYS_CCSRBAR_xxx macros. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/*
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* Copyright 2004, 2007 Freescale Semiconductor.
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* Copyright(c) 2003 Motorola Inc.
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*/
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#ifndef __MPC85xx_H__
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#define __MPC85xx_H__
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/* define for common ppc_asm.tmpl */
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#define EXC_OFF_SYS_RESET 0x100 /* System reset */
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#define _START_OFFSET 0
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#if defined(CONFIG_E500)
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#include <e500.h>
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#endif
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/*
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* SCCR - System Clock Control Register, 9-8
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*/
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#define SCCR_CLPD 0x00000004 /* CPM Low Power Disable */
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#define SCCR_DFBRG_MSK 0x00000003 /* Division by BRGCLK Mask */
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#define SCCR_DFBRG_SHIFT 0
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#define SCCR_DFBRG00 0x00000000 /* BRGCLK division by 4 */
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#define SCCR_DFBRG01 0x00000001 /* BRGCLK div by 16 (normal) */
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#define SCCR_DFBRG10 0x00000002 /* BRGCLK division by 64 */
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#define SCCR_DFBRG11 0x00000003 /* BRGCLK division by 256 */
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/*
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* Define default values for some CCSR macros to make header files cleaner*
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*
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* To completely disable CCSR relocation in a board header file, define
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* CONFIG_SYS_CCSR_DO_NOT_RELOCATE. This will force CONFIG_SYS_CCSRBAR_PHYS
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* to a value that is the same as CONFIG_SYS_CCSRBAR.
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*/
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#ifdef CONFIG_SYS_CCSRBAR_PHYS
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#error "Do not define CONFIG_SYS_CCSRBAR_PHYS directly. Use \
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CONFIG_SYS_CCSRBAR_PHYS_LOW and/or CONFIG_SYS_CCSRBAR_PHYS_HIGH instead."
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#endif
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#ifdef CONFIG_SYS_CCSR_DO_NOT_RELOCATE
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#undef CONFIG_SYS_CCSRBAR_PHYS_HIGH
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#undef CONFIG_SYS_CCSRBAR_PHYS_LOW
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#define CONFIG_SYS_CCSRBAR_PHYS_HIGH 0
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#endif
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#ifndef CONFIG_SYS_CCSRBAR
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#define CONFIG_SYS_CCSRBAR CONFIG_SYS_CCSRBAR_DEFAULT
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#endif
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#ifndef CONFIG_SYS_CCSRBAR_PHYS_HIGH
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#ifdef CONFIG_PHYS_64BIT
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#define CONFIG_SYS_CCSRBAR_PHYS_HIGH 0xf
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#else
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#define CONFIG_SYS_CCSRBAR_PHYS_HIGH 0
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#endif
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#endif
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#ifndef CONFIG_SYS_CCSRBAR_PHYS_LOW
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#define CONFIG_SYS_CCSRBAR_PHYS_LOW CONFIG_SYS_CCSRBAR_DEFAULT
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#endif
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#define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH * 1ull) << 32 | \
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CONFIG_SYS_CCSRBAR_PHYS_LOW)
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#ifndef CONFIG_SYS_IMMR
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#define CONFIG_SYS_IMMR CONFIG_SYS_CCSRBAR
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#endif
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#endif /* __MPC85xx_H__ */
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