diff options
Diffstat (limited to 'arch/arm/cpu/tegra20-common/ap20.c')
-rw-r--r-- | arch/arm/cpu/tegra20-common/ap20.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/arch/arm/cpu/tegra20-common/ap20.c b/arch/arm/cpu/tegra20-common/ap20.c deleted file mode 100644 index c0ca6eb379..0000000000 --- a/arch/arm/cpu/tegra20-common/ap20.c +++ /dev/null @@ -1,131 +0,0 @@ -/* -* (C) Copyright 2010-2011 -* NVIDIA Corporation <www.nvidia.com> -* -* See file CREDITS for list of people who contributed to this -* project. -* -* This program is free software; you can redistribute it and/or -* modify it under the terms of the GNU General Public License as -* published by the Free Software Foundation; either version 2 of -* the License, or (at your option) any later version. -* -* This program is distributed in the hope that it will be useful, -* but WITHOUT ANY WARRANTY; without even the implied warranty of -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -* GNU General Public License for more details. -* -* You should have received a copy of the GNU General Public License -* along with this program; if not, write to the Free Software -* Foundation, Inc., 59 Temple Place, Suite 330, Boston, -* MA 02111-1307 USA -*/ -#include <asm/io.h> -#include <asm/arch/ap20.h> -#include <asm/arch/fuse.h> -#include <asm/arch/gp_padctrl.h> -#include <asm/arch/pmc.h> -#include <asm/arch/scu.h> -#include <asm/arch/warmboot.h> -#include <common.h> - -int tegra_get_chip_type(void) -{ - struct apb_misc_gp_ctlr *gp; - struct fuse_regs *fuse = (struct fuse_regs *)NV_PA_FUSE_BASE; - uint tegra_sku_id, rev; - - /* - * This is undocumented, Chip ID is bits 15:8 of the register - * APB_MISC + 0x804, and has value 0x20 for Tegra20, 0x30 for - * Tegra30 - */ - gp = (struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE; - rev = (readl(&gp->hidrev) & HIDREV_CHIPID_MASK) >> HIDREV_CHIPID_SHIFT; - - tegra_sku_id = readl(&fuse->sku_info) & 0xff; - - switch (rev) { - case CHIPID_TEGRA20: - switch (tegra_sku_id) { - case SKU_ID_T20: - return TEGRA_SOC_T20; - case SKU_ID_T25SE: - case SKU_ID_AP25: - case SKU_ID_T25: - case SKU_ID_AP25E: - case SKU_ID_T25E: - return TEGRA_SOC_T25; - } - break; - } - /* unknown sku id */ - return TEGRA_SOC_UNKNOWN; -} - -static void enable_scu(void) -{ - struct scu_ctlr *scu = (struct scu_ctlr *)NV_PA_ARM_PERIPHBASE; - u32 reg; - - /* If SCU already setup/enabled, return */ - if (readl(&scu->scu_ctrl) & SCU_CTRL_ENABLE) - return; - - /* Invalidate all ways for all processors */ - writel(0xFFFF, &scu->scu_inv_all); - - /* Enable SCU - bit 0 */ - reg = readl(&scu->scu_ctrl); - reg |= SCU_CTRL_ENABLE; - writel(reg, &scu->scu_ctrl); -} - -static u32 get_odmdata(void) -{ - /* - * ODMDATA is stored in the BCT in IRAM by the BootROM. - * The BCT start and size are stored in the BIT in IRAM. - * Read the data @ bct_start + (bct_size - 12). This works - * on T20 and T30 BCTs, which are locked down. If this changes - * in new chips (T114, etc.), we can revisit this algorithm. - */ - - u32 bct_start, odmdata; - - bct_start = readl(AP20_BASE_PA_SRAM + NVBOOTINFOTABLE_BCTPTR); - odmdata = readl(bct_start + BCT_ODMDATA_OFFSET); - - return odmdata; -} - -static void init_pmc_scratch(void) -{ - struct pmc_ctlr *const pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE; - u32 odmdata; - int i; - - /* SCRATCH0 is initialized by the boot ROM and shouldn't be cleared */ - for (i = 0; i < 23; i++) - writel(0, &pmc->pmc_scratch1+i); - - /* ODMDATA is for kernel use to determine RAM size, LP config, etc. */ - odmdata = get_odmdata(); - writel(odmdata, &pmc->pmc_scratch20); -} - -void s_init(void) -{ - /* Init PMC scratch memory */ - init_pmc_scratch(); - - enable_scu(); - - /* enable SMP mode and FW for CPU0, by writing to Auxiliary Ctl reg */ - asm volatile( - "mrc p15, 0, r0, c1, c0, 1\n" - "orr r0, r0, #0x41\n" - "mcr p15, 0, r0, c1, c0, 1\n"); - - /* FIXME: should have ap20's L2 disabled too? */ -} |