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Diffstat (limited to 'arch/blackfin/mach-bf548/head.S')
| -rw-r--r-- | arch/blackfin/mach-bf548/head.S | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/arch/blackfin/mach-bf548/head.S b/arch/blackfin/mach-bf548/head.S deleted file mode 100644 index 93b361dff27b..000000000000 --- a/arch/blackfin/mach-bf548/head.S +++ /dev/null @@ -1,158 +0,0 @@ -/* - * File: arch/blackfin/mach-bf548/head.S - * Based on: arch/blackfin/mach-bf537/head.S - * Author: Jeff Dionne <jeff@uclinux.org> COPYRIGHT 1998 D. Jeff Dionne - * - * Created: 1998 - * Description: Startup code for Blackfin BF548 - * - * Modified: - * Copyright 2004-2007 Analog Devices Inc. - * - * Bugs: Enter bugs at http://blackfin.uclinux.org/ - * - * 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, see the file COPYING, or write - * to the Free Software Foundation, Inc., - * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <linux/linkage.h> -#include <linux/init.h> -#include <asm/blackfin.h> -#ifdef CONFIG_BFIN_KERNEL_CLOCK -#include <asm/clocks.h> -#include <mach/mem_init.h> -#endif - -.section .l1.text -#ifdef CONFIG_BFIN_KERNEL_CLOCK -ENTRY(_start_dma_code) - - /* Enable PHY CLK buffer output */ - p0.h = hi(VR_CTL); - p0.l = lo(VR_CTL); - r0.l = w[p0]; - bitset(r0, 14); - w[p0] = r0.l; - ssync; - - p0.h = hi(SIC_IWR0); - p0.l = lo(SIC_IWR0); - r0.l = 0x1; - r0.h = 0x0; - [p0] = r0; - SSYNC; - - /* - * Set PLL_CTL - * - [14:09] = MSEL[5:0] : CLKIN / VCO multiplication factors - * - [8] = BYPASS : BYPASS the PLL, run CLKIN into CCLK/SCLK - * - [7] = output delay (add 200ps of delay to mem signals) - * - [6] = input delay (add 200ps of input delay to mem signals) - * - [5] = PDWN : 1=All Clocks off - * - [3] = STOPCK : 1=Core Clock off - * - [1] = PLL_OFF : 1=Disable Power to PLL - * - [0] = DF : 1=Pass CLKIN/2 to PLL / 0=Pass CLKIN to PLL - * all other bits set to zero - */ - - p0.h = hi(PLL_LOCKCNT); - p0.l = lo(PLL_LOCKCNT); - r0 = 0x300(Z); - w[p0] = r0.l; - ssync; - - /* enable self refresh via SRREQ */ - P2.H = hi(EBIU_RSTCTL); - P2.L = lo(EBIU_RSTCTL); - R0 = [P2]; - BITSET (R0, 3); - [P2] = R0; - SSYNC; - - /* wait for SRACK bit to be set */ -.LSRR_MODE: - R0 = [P2]; - CC = BITTST(R0, 4); - if !CC JUMP .LSRR_MODE; - - r0 = CONFIG_VCO_MULT & 63; /* Load the VCO multiplier */ - r0 = r0 << 9; /* Shift it over, */ - r1 = CLKIN_HALF; /* Do we need to divide CLKIN by 2?*/ - r0 = r1 | r0; - r1 = PLL_BYPASS; /* Bypass the PLL? */ - r1 = r1 << 8; /* Shift it over */ - r0 = r1 | r0; /* add them all together */ -#ifdef ANOMALY_05000265 - BITSET(r0, 15); /* Add 250 mV of hysteresis to SPORT input pins */ -#endif - - p0.h = hi(PLL_CTL); - p0.l = lo(PLL_CTL); /* Load the address */ - cli r2; /* Disable interrupts */ - ssync; - w[p0] = r0.l; /* Set the value */ - idle; /* Wait for the PLL to stablize */ - sti r2; /* Enable interrupts */ - -.Lcheck_again: - p0.h = hi(PLL_STAT); - p0.l = lo(PLL_STAT); - R0 = W[P0](Z); - CC = BITTST(R0,5); - if ! CC jump .Lcheck_again; - - /* Configure SCLK & CCLK Dividers */ - r0 = (CONFIG_CCLK_ACT_DIV | CONFIG_SCLK_DIV); - p0.h = hi(PLL_DIV); - p0.l = lo(PLL_DIV); - w[p0] = r0.l; - ssync; - - /* disable self refresh by clearing SRREQ */ - P2.H = hi(EBIU_RSTCTL); - P2.L = lo(EBIU_RSTCTL); - R0 = [P2]; - CC = BITTST(R0, 0); - if CC jump .Lskipddrrst; - BITSET (R0, 0); -.Lskipddrrst: - BITCLR (R0, 3); - [P2] = R0; - SSYNC; - - p0.l = lo(EBIU_DDRCTL0); - p0.h = hi(EBIU_DDRCTL0); - r0.l = lo(mem_DDRCTL0); - r0.h = hi(mem_DDRCTL0); - [p0] = r0; - ssync; - - p0.l = lo(EBIU_DDRCTL1); - p0.h = hi(EBIU_DDRCTL1); - r0.l = lo(mem_DDRCTL1); - r0.h = hi(mem_DDRCTL1); - [p0] = r0; - ssync; - - p0.l = lo(EBIU_DDRCTL2); - p0.h = hi(EBIU_DDRCTL2); - r0.l = lo(mem_DDRCTL2); - r0.h = hi(mem_DDRCTL2); - [p0] = r0; - ssync; - - RTS; -ENDPROC(_start_dma_code) -#endif /* CONFIG_BFIN_KERNEL_CLOCK */ |