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tegra: add Tegra3 ramsize detection 

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Lucas Stach 2014-04-13 15:27:36 +02:00 committed by Sascha Hauer
parent cdc5b61c6d
commit 90542372c4
2 changed files with 26 additions and 1 deletions
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21
arch/arm/mach-tegra/include/mach/lowlevel.h
View File

@ -39,6 +39,7 @@
#define T20_ODMDATA_RAMSIZE_SHIFT 28
#define T20_ODMDATA_RAMSIZE_MASK (3 << T20_ODMDATA_RAMSIZE_SHIFT)
#define T30_ODMDATA_RAMSIZE_MASK (0xf << T20_ODMDATA_RAMSIZE_SHIFT)
#define T20_ODMDATA_UARTTYPE_SHIFT 18
#define T20_ODMDATA_UARTTYPE_MASK (3 << T20_ODMDATA_UARTTYPE_SHIFT)
#define T20_ODMDATA_UARTID_SHIFT 15
@ -124,6 +125,26 @@ uint32_t tegra20_get_ramsize(void)
}
}
static __always_inline
uint32_t tegra30_get_ramsize(void)
{
switch ((tegra_get_odmdata() & T30_ODMDATA_RAMSIZE_MASK) >>
T20_ODMDATA_RAMSIZE_SHIFT) {
case 0:
case 1:
default:
return SZ_256M;
case 2:
return SZ_512M;
case 3:
return SZ_512M + SZ_256M;
case 4:
return SZ_1G;
case 8:
return SZ_2G - SZ_1M;
}
}
static long uart_id_to_base[] = {
TEGRA_UARTA_BASE,
TEGRA_UARTB_BASE,

6
arch/arm/mach-tegra/tegra_maincomplex_init.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2013 Lucas Stach <l.stach@pengutronix.de>
* Copyright (C) 2013-2014 Lucas Stach <l.stach@pengutronix.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@ -41,6 +41,10 @@ void tegra_maincomplex_entry(void)
rambase = 0x0;
ramsize = tegra20_get_ramsize();
break;
case TEGRA30:
rambase = SZ_2G;
ramsize = tegra30_get_ramsize();
break;
default:
/* If we don't know the chiptype, better bail out */
unreachable();