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authorMichael Hennerich <michael.hennerich@analog.com>2009-01-07 23:14:39 +0800
committerBryan Wu <cooloney@kernel.org>2009-01-07 23:14:39 +0800
commit73feb5c09dcf0d64beb67aa5e1f79e11a388e0ff (patch)
tree09fa1f153a2ca810ad72978736f85359205d64a3 /arch/blackfin/mach-bf538
parentc97618d3b7b8ef86a966c4b67b54e5ca15814905 (diff)
Blackfin arch: fix bugs and unify BFIN_KERNEL_CLOCK option
- remove duplicated code and headers - add option allowing arbitrary SDRAM/DDR Timing parameters. - mark automatically calculated timings as EXPERIMENTAL - fix comment header block Related to BUGs: - kernel boot up fails with CONFIG_BFIN_KERNEL_CLOCK item on. - kernel does not boot if re-program clocks [ Mike Frysinger <vapier.adi@gmail.com> - fix comment header - mark do_sync static - document the DMA shutdown - simplify SIC_IWR handling - fix ANOMALY_05000265 handling to work as intended ] Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/mach-bf538')
-rw-r--r--arch/blackfin/mach-bf538/Makefile2
-rw-r--r--arch/blackfin/mach-bf538/head.S137
-rw-r--r--arch/blackfin/mach-bf538/include/mach/mem_init.h303
3 files changed, 0 insertions, 442 deletions
diff --git a/arch/blackfin/mach-bf538/Makefile b/arch/blackfin/mach-bf538/Makefile
index 1f093c4f723..8cd2719684d 100644
--- a/arch/blackfin/mach-bf538/Makefile
+++ b/arch/blackfin/mach-bf538/Makefile
@@ -2,6 +2,4 @@
# arch/blackfin/mach-bf538/Makefile
#
-extra-y := head.o
-
obj-y := ints-priority.o dma.o
diff --git a/arch/blackfin/mach-bf538/head.S b/arch/blackfin/mach-bf538/head.S
deleted file mode 100644
index 39013ec9700..00000000000
--- a/arch/blackfin/mach-bf538/head.S
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * File: arch/blackfin/mach-bf538/head.S
- * Based on:
- * Author: Jeff Dionne <jeff@uclinux.org> COPYRIGHT 1998 D. Jeff Dionne
- *
- * Created: 1998
- * Description: bf533 startup file
- *
- * Modified:
- * Copyright 2004-2006 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/mach-common/clocks.h>
-#include <asm/mach/mem_init.h>
-#endif
-
-.section .l1.text
-#ifdef CONFIG_BFIN_KERNEL_CLOCK
-ENTRY(_start_dma_code)
- 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;
-
- P2.H = hi(EBIU_SDGCTL);
- P2.L = lo(EBIU_SDGCTL);
- R0 = [P2];
- BITSET (R0, 24);
- [P2] = R0;
- SSYNC;
-
- 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;
-
- p0.l = lo(EBIU_SDRRC);
- p0.h = hi(EBIU_SDRRC);
- r0 = mem_SDRRC;
- w[p0] = r0.l;
- ssync;
-
- P2.H = hi(EBIU_SDGCTL);
- P2.L = lo(EBIU_SDGCTL);
- R0 = [P2];
- BITCLR (R0, 24);
- p0.h = hi(EBIU_SDSTAT);
- p0.l = lo(EBIU_SDSTAT);
- r2.l = w[p0];
- cc = bittst(r2,3);
- if !cc jump .Lskip;
- NOP;
- BITSET (R0, 23);
-.Lskip:
- [P2] = R0;
- SSYNC;
-
- R0.L = lo(mem_SDGCTL);
- R0.H = hi(mem_SDGCTL);
- R1 = [p2];
- R1 = R1 | R0;
- [P2] = R1;
- SSYNC;
-
- RTS;
-ENDPROC(_start_dma_code)
-#endif /* CONFIG_BFIN_KERNEL_CLOCK */
diff --git a/arch/blackfin/mach-bf538/include/mach/mem_init.h b/arch/blackfin/mach-bf538/include/mach/mem_init.h
deleted file mode 100644
index d3961ba997c..00000000000
--- a/arch/blackfin/mach-bf538/include/mach/mem_init.h
+++ /dev/null
@@ -1,303 +0,0 @@
-/*
- * File: include/asm-blackfin/mach-bf538/mem_init.h
- * Based on:
- * Author:
- *
- * Created:
- * Description:
- *
- * Rev:
- *
- * Modified:
- * Copyright 2004-2006 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, 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; see the file COPYING.
- * If not, write to the Free Software Foundation,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#if (CONFIG_MEM_MT48LC16M16A2TG_75 || CONFIG_MEM_MT48LC64M4A2FB_7E || CONFIG_MEM_MT48LC16M8A2TG_75 || CONFIG_MEM_GENERIC_BOARD || CONFIG_MEM_MT48LC32M8A2_75)
-#if (CONFIG_SCLK_HZ > 119402985)
-#define SDRAM_tRP TRP_2
-#define SDRAM_tRP_num 2
-#define SDRAM_tRAS TRAS_7
-#define SDRAM_tRAS_num 7
-#define SDRAM_tRCD TRCD_2
-#define SDRAM_tWR TWR_2
-#endif
-#if (CONFIG_SCLK_HZ > 104477612) && (CONFIG_SCLK_HZ <= 119402985)
-#define SDRAM_tRP TRP_2
-#define SDRAM_tRP_num 2
-#define SDRAM_tRAS TRAS_6
-#define SDRAM_tRAS_num 6
-#define SDRAM_tRCD TRCD_2
-#define SDRAM_tWR TWR_2
-#endif
-#if (CONFIG_SCLK_HZ > 89552239) && (CONFIG_SCLK_HZ <= 104477612)
-#define SDRAM_tRP TRP_2
-#define SDRAM_tRP_num 2
-#define SDRAM_tRAS TRAS_5
-#define SDRAM_tRAS_num 5
-#define SDRAM_tRCD TRCD_2
-#define SDRAM_tWR TWR_2
-#endif
-#if (CONFIG_SCLK_HZ > 74626866) && (CONFIG_SCLK_HZ <= 89552239)
-#define SDRAM_tRP TRP_2
-#define SDRAM_tRP_num 2
-#define SDRAM_tRAS TRAS_4
-#define SDRAM_tRAS_num 4
-#define SDRAM_tRCD TRCD_2
-#define SDRAM_tWR TWR_2
-#endif
-#if (CONFIG_SCLK_HZ > 66666667) && (CONFIG_SCLK_HZ <= 74626866)
-#define SDRAM_tRP TRP_2
-#define SDRAM_tRP_num 2
-#define SDRAM_tRAS TRAS_3
-#define SDRAM_tRAS_num 3
-#define SDRAM_tRCD TRCD_2
-#define SDRAM_tWR TWR_2
-#endif
-#if (CONFIG_SCLK_HZ > 59701493) && (CONFIG_SCLK_HZ <= 66666667)
-#define SDRAM_tRP TRP_1
-#define SDRAM_tRP_num 1
-#define SDRAM_tRAS TRAS_4
-#define SDRAM_tRAS_num 3
-#define SDRAM_tRCD TRCD_1
-#define SDRAM_tWR TWR_2
-#endif
-#if (CONFIG_SCLK_HZ > 44776119) && (CONFIG_SCLK_HZ <= 59701493)
-#define SDRAM_tRP TRP_1
-#define SDRAM_tRP_num 1
-#define SDRAM_tRAS TRAS_3
-#define SDRAM_tRAS_num 3
-#define SDRAM_tRCD TRCD_1
-#define SDRAM_tWR TWR_2
-#endif
-#if (CONFIG_SCLK_HZ > 29850746) && (CONFIG_SCLK_HZ <= 44776119)
-#define SDRAM_tRP TRP_1
-#define SDRAM_tRP_num 1
-#define SDRAM_tRAS TRAS_2
-#define SDRAM_tRAS_num 2
-#define SDRAM_tRCD TRCD_1
-#define SDRAM_tWR TWR_2
-#endif
-#if (CONFIG_SCLK_HZ <= 29850746)
-#define SDRAM_tRP TRP_1
-#define SDRAM_tRP_num 1
-#define SDRAM_tRAS TRAS_1
-#define SDRAM_tRAS_num 1
-#define SDRAM_tRCD TRCD_1
-#define SDRAM_tWR TWR_2
-#endif
-#endif
-
-#if (CONFIG_MEM_MT48LC16M16A2TG_75)
- /*SDRAM INFORMATION: */
-#define SDRAM_Tref 64 /* Refresh period in milliseconds */
-#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
-#define SDRAM_CL CL_3
-#endif
-
-#if (CONFIG_MEM_MT48LC16M8A2TG_75)
- /*SDRAM INFORMATION: */
-#define SDRAM_Tref 64 /* Refresh period in milliseconds */
-#define SDRAM_NRA 4096 /* Number of row addresses in SDRAM */
-#define SDRAM_CL CL_3
-#endif
-
-#if (CONFIG_MEM_MT48LC32M8A2_75)
- /*SDRAM INFORMATION: */
-#define SDRAM_Tref 64 /* Refresh period in milliseconds */
-#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
-#define SDRAM_CL CL_3
-#endif
-
-#if (CONFIG_MEM_MT48LC64M4A2FB_7E)
- /*SDRAM INFORMATION: */
-#define SDRAM_Tref 64 /* Refresh period in milliseconds */
-#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
-#define SDRAM_CL CL_3
-#endif
-
-#if (CONFIG_MEM_GENERIC_BOARD)
- /*SDRAM INFORMATION: Modify this for your board */
-#define SDRAM_Tref 64 /* Refresh period in milliseconds */
-#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
-#define SDRAM_CL CL_3
-#endif
-
-/* Equation from section 17 (p17-46) of BF533 HRM */
-#define mem_SDRRC ((((CONFIG_SCLK_HZ / 1000) * SDRAM_Tref) / SDRAM_NRA) - (SDRAM_tRAS_num + SDRAM_tRP_num))
-
-/* Enable SCLK Out */
-#define mem_SDGCTL (SCTLE | SDRAM_CL | SDRAM_tRAS | SDRAM_tRP | SDRAM_tRCD | SDRAM_tWR | PSS)
-
-#if defined CONFIG_CLKIN_HALF
-#define CLKIN_HALF 1
-#else
-#define CLKIN_HALF 0
-#endif
-
-#if defined CONFIG_PLL_BYPASS
-#define PLL_BYPASS 1
-#else
-#define PLL_BYPASS 0
-#endif
-
-/***************************************Currently Not Being Used *********************************/
-#define flash_EBIU_AMBCTL_WAT (((CONFIG_FLASH_SPEED_BWAT * 4) / (4000000000 / CONFIG_SCLK_HZ)) + 1)
-#define flash_EBIU_AMBCTL_RAT (((CONFIG_FLASH_SPEED_BRAT * 4) / (4000000000 / CONFIG_SCLK_HZ)) + 1)
-#define flash_EBIU_AMBCTL_HT (((CONFIG_FLASH_SPEED_BHT * 4) / (4000000000 / CONFIG_SCLK_HZ)))
-#define flash_EBIU_AMBCTL_ST (((CONFIG_FLASH_SPEED_BST * 4) / (4000000000 / CONFIG_SCLK_HZ)) + 1)
-#define flash_EBIU_AMBCTL_TT (((CONFIG_FLASH_SPEED_BTT * 4) / (4000000000 / CONFIG_SCLK_HZ)) + 1)
-
-#if (flash_EBIU_AMBCTL_TT > 3)
-#define flash_EBIU_AMBCTL0_TT B0TT_4
-#endif
-#if (flash_EBIU_AMBCTL_TT == 3)
-#define flash_EBIU_AMBCTL0_TT B0TT_3
-#endif
-#if (flash_EBIU_AMBCTL_TT == 2)
-#define flash_EBIU_AMBCTL0_TT B0TT_2
-#endif
-#if (flash_EBIU_AMBCTL_TT < 2)
-#define flash_EBIU_AMBCTL0_TT B0TT_1
-#endif
-
-#if (flash_EBIU_AMBCTL_ST > 3)
-#define flash_EBIU_AMBCTL0_ST B0ST_4
-#endif
-#if (flash_EBIU_AMBCTL_ST == 3)
-#define flash_EBIU_AMBCTL0_ST B0ST_3
-#endif
-#if (flash_EBIU_AMBCTL_ST == 2)
-#define flash_EBIU_AMBCTL0_ST B0ST_2
-#endif
-#if (flash_EBIU_AMBCTL_ST < 2)
-#define flash_EBIU_AMBCTL0_ST B0ST_1
-#endif
-
-#if (flash_EBIU_AMBCTL_HT > 2)
-#define flash_EBIU_AMBCTL0_HT B0HT_3
-#endif
-#if (flash_EBIU_AMBCTL_HT == 2)
-#define flash_EBIU_AMBCTL0_HT B0HT_2
-#endif
-#if (flash_EBIU_AMBCTL_HT == 1)
-#define flash_EBIU_AMBCTL0_HT B0HT_1
-#endif
-#if (flash_EBIU_AMBCTL_HT == 0 && CONFIG_FLASH_SPEED_BHT == 0)
-#define flash_EBIU_AMBCTL0_HT B0HT_0
-#endif
-#if (flash_EBIU_AMBCTL_HT == 0 && CONFIG_FLASH_SPEED_BHT != 0)
-#define flash_EBIU_AMBCTL0_HT B0HT_1
-#endif
-
-#if (flash_EBIU_AMBCTL_WAT > 14)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_15
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 14)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_14
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 13)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_13
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 12)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_12
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 11)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_11
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 10)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_10
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 9)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_9
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 8)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_8
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 7)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_7
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 6)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_6
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 5)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_5
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 4)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_4
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 3)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_3
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 2)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_2
-#endif
-#if (flash_EBIU_AMBCTL_WAT == 1)
-#define flash_EBIU_AMBCTL0_WAT B0WAT_1
-#endif
-
-#if (flash_EBIU_AMBCTL_RAT > 14)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_15
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 14)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_14
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 13)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_13
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 12)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_12
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 11)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_11
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 10)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_10
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 9)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_9
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 8)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_8
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 7)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_7
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 6)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_6
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 5)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_5
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 4)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_4
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 3)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_3
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 2)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_2
-#endif
-#if (flash_EBIU_AMBCTL_RAT == 1)
-#define flash_EBIU_AMBCTL0_RAT B0RAT_1
-#endif
-
-#define flash_EBIU_AMBCTL0 \
- (flash_EBIU_AMBCTL0_WAT | flash_EBIU_AMBCTL0_RAT | flash_EBIU_AMBCTL0_HT | \
- flash_EBIU_AMBCTL0_ST | flash_EBIU_AMBCTL0_TT | CONFIG_FLASH_SPEED_RDYEN)