[U-Boot] [PATCH 2/7] ppc/p4080: Add support for CoreNet style platform LAWs

[Kumar Gala]

On Sep 22, 2009, at 3:05 PM, Wolfgang Denk wrote:

> Dear Kumar Gala,
>
> In message <1253307595-28655-3-git-send-email-galak at kernel.crashing.org 
> > you wrote:
>> On CoreNet based platforms the LAW address is split between an high &
>> low register and we no longer shift the address.  Also, the target  
>> IDs
>> on CoreNet platforms have been completely re-assigned.
>>
>> Additionally, added a new find_law() API to which LAW an address  
>> hits in.
>> This is need for the CoreNet style boot release code since it will  
>> need
>> to determine what the target ID should be set to for boot window
>> translation.
>>
>> Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
>> ---
>> drivers/misc/fsl_law.c    |   99 +++++++++++++++++++++++++++++++++++ 
>> +++++++++-
>> include/asm-ppc/fsl_law.h |   29 +++++++++++++
>> 2 files changed, 127 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/misc/fsl_law.c b/drivers/misc/fsl_law.c
>> index aa877c6..fba16ed 100644
>> --- a/drivers/misc/fsl_law.c
>> +++ b/drivers/misc/fsl_law.c
>> @@ -1,5 +1,5 @@
>> /*
>> - * Copyright 2008 Freescale Semiconductor, Inc.
>> + * Copyright 2008-2009 Freescale Semiconductor, Inc.
>>  *
>>  * (C) Copyright 2000
>>  * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
>> @@ -48,6 +48,24 @@ DECLARE_GLOBAL_DATA_PTR;
>>
>> void set_law(u8 idx, phys_addr_t addr, enum law_size sz, enum  
>> law_trgt_if id)
>> {
>> +#ifdef CONFIG_FSL_CORENET
>> +	volatile ccsr_local_t *ccm;
>> +	volatile u32 *base, *lawbarh, *lawbarl, *lawar;
>> +
>> +	ccm = (void *)(CONFIG_SYS_FSL_CORENET_CCM_ADDR);
>> +
>> +	base = &(ccm->lawbarh0);
>> +	lawbarh = base + idx * 4;
>> +	lawbarl = lawbarh + 1;
>> +	lawar = lawbarl + 1;
>> +
>> +	gd->used_laws |= (1 << idx);
>> +
>> +	out_be32(lawar, 0);
>> +	out_be32(lawbarh, ((u64)addr >> 32));
>> +	out_be32(lawbarl, addr & 0xffffffff);
>> +	out_be32(lawar, LAWAR_EN | ((u32)id << 20) | (u32)sz);
>> +#else
>> 	volatile u32 *base = (volatile u32 *)(CONFIG_SYS_IMMR + 0xc08);
>> 	volatile u32 *lawbar = base + 8 * idx;
>> 	volatile u32 *lawar = base + 8 * idx + 2;
>
> This is ugly. Now we have code and variable declarations intermixed.
> Please don't. Especially not when it's the same variables.

Will fix this in a subsequent patch.

- k