summaryrefslogtreecommitdiff
path: root/arch/arm/cpu/tegra20-common/ap20.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/cpu/tegra20-common/ap20.c')
-rw-r--r--arch/arm/cpu/tegra20-common/ap20.c131
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? */
-}