blackfin architecture

This adds support for the Analog Devices Blackfin processor architecture, and
currently supports the BF533, BF532, BF531, BF537, BF536, BF534, and BF561
(Dual Core) devices, with a variety of development platforms including those
avaliable from Analog Devices (BF533-EZKit, BF533-STAMP, BF537-STAMP,
BF561-EZKIT), and Bluetechnix!  Tinyboards.

The Blackfin architecture was jointly developed by Intel and Analog Devices
Inc.  (ADI) as the Micro Signal Architecture (MSA) core and introduced it in
December of 2000.  Since then ADI has put this core into its Blackfin
processor family of devices.  The Blackfin core has the advantages of a clean,
orthogonal,RISC-like microprocessor instruction set.  It combines a dual-MAC
(Multiply/Accumulate), state-of-the-art signal processing engine and
single-instruction, multiple-data (SIMD) multimedia capabilities into a single
instruction-set architecture.

The Blackfin architecture, including the instruction set, is described by the
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
http://blackfin.uclinux.org/gf/download/frsrelease/29/2549/Blackfin_PRM.pdf

The Blackfin processor is already supported by major releases of gcc, and
there are binary and source rpms/tarballs for many architectures at:
http://blackfin.uclinux.org/gf/project/toolchain/frs There is complete
documentation, including "getting started" guides available at:
http://docs.blackfin.uclinux.org/ which provides links to the sources and
patches you will need in order to set up a cross-compiling environment for
bfin-linux-uclibc

This patch, as well as the other patches (toolchain, distribution,
uClibc) are actively supported by Analog Devices Inc, at:
http://blackfin.uclinux.org/

We have tested this on LTP, and our test plan (including pass/fails) can
be found at:
http://docs.blackfin.uclinux.org/doku.php?id=testing_the_linux_kernel

[m.kozlowski@tuxland.pl: balance parenthesis in blackfin header files]
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Aubrey Li <aubrey.li@analog.com>
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 408 insertions, 0 deletions

diff --git a/include/asm-blackfin/mach-bf561/bf561.h b/include/asm-blackfin/mach-bf561/bf561.h
new file mode 100644
index 000000000000..96a5d3a47e45
--- /dev/null
+++ b/include/asm-blackfin/mach-bf561/bf561.h
@@ -0,0 +1,408 @@
+/*
+ * File:         include/asm-blackfin/mach-bf561/bf561.h
+ * Based on:
+ * Author:
+ *
+ * Created:
+ * Description:  SYSTEM MMR REGISTER AND MEMORY MAP FOR ADSP-BF561
+ *
+ * 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
+ */
+
+#ifndef __MACH_BF561_H__
+#define __MACH_BF561_H__
+
+#define SUPPORTED_REVID         0x3
+
+#define OFFSET_(x) ((x) & 0x0000FFFF)
+#define L1_ISRAM                0xFFA00000
+#define L1_ISRAM_END            0xFFA04000
+#define DATA_BANKA_SRAM         0xFF800000
+#define DATA_BANKA_SRAM_END     0xFF804000
+#define DATA_BANKB_SRAM         0xFF900000
+#define DATA_BANKB_SRAM_END     0xFF904000
+#define L1_DSRAMA               0xFF800000
+#define L1_DSRAMA_END           0xFF804000
+#define L1_DSRAMB               0xFF900000
+#define L1_DSRAMB_END           0xFF904000
+#define L2_SRAM                 0xFEB00000
+#define L2_SRAM_END             0xFEB20000
+#define AMB_FLASH               0x20000000
+#define AMB_FLASH_END           0x21000000
+#define AMB_FLASH_LENGTH        0x01000000
+#define L1_ISRAM_LENGTH         0x4000
+#define L1_DSRAMA_LENGTH        0x4000
+#define L1_DSRAMB_LENGTH        0x4000
+#define L2_SRAM_LENGTH          0x20000
+
+/*some misc defines*/
+#define IMASK_IVG15             0x8000
+#define IMASK_IVG14             0x4000
+#define IMASK_IVG13             0x2000
+#define IMASK_IVG12             0x1000
+
+#define IMASK_IVG11             0x0800
+#define IMASK_IVG10             0x0400
+#define IMASK_IVG9              0x0200
+#define IMASK_IVG8              0x0100
+
+#define IMASK_IVG7              0x0080
+#define IMASK_IVGTMR            0x0040
+#define IMASK_IVGHW             0x0020
+
+/***************************
+ * Blackfin Cache setup
+ */
+
+
+#define BLKFIN_ISUBBANKS        4
+#define BLKFIN_IWAYS            4
+#define BLKFIN_ILINES           32
+
+#define BLKFIN_DSUBBANKS        4
+#define BLKFIN_DWAYS            2
+#define BLKFIN_DLINES           64
+
+#define WAY0_L                  0x1
+#define WAY1_L                  0x2
+#define WAY01_L                 0x3
+#define WAY2_L                  0x4
+#define WAY02_L                 0x5
+#define WAY12_L                 0x6
+#define WAY012_L                0x7
+
+#define WAY3_L                  0x8
+#define WAY03_L                 0x9
+#define WAY13_L                 0xA
+#define WAY013_L                0xB
+
+#define WAY32_L                 0xC
+#define WAY320_L                0xD
+#define WAY321_L                0xE
+#define WAYALL_L                0xF
+
+#define DMC_ENABLE (2<<2)       /*yes, 2, not 1 */
+
+/* IAR0 BIT FIELDS */
+#define PLL_WAKEUP_BIT          0xFFFFFFFF
+#define DMA1_ERROR_BIT          0xFFFFFF0F
+#define DMA2_ERROR_BIT          0xFFFFF0FF
+#define IMDMA_ERROR_BIT         0xFFFF0FFF
+#define PPI1_ERROR_BIT          0xFFF0FFFF
+#define PPI2_ERROR_BIT          0xFF0FFFFF
+#define SPORT0_ERROR_BIT        0xF0FFFFFF
+#define SPORT1_ERROR_BIT        0x0FFFFFFF
+/* IAR1 BIT FIELDS */
+#define SPI_ERROR_BIT           0xFFFFFFFF
+#define UART_ERROR_BIT          0xFFFFFF0F
+#define RESERVED_ERROR_BIT      0xFFFFF0FF
+#define DMA1_0_BIT              0xFFFF0FFF
+#define DMA1_1_BIT              0xFFF0FFFF
+#define DMA1_2_BIT              0xFF0FFFFF
+#define DMA1_3_BIT              0xF0FFFFFF
+#define DMA1_4_BIT              0x0FFFFFFF
+/* IAR2 BIT FIELDS */
+#define DMA1_5_BIT              0xFFFFFFFF
+#define DMA1_6_BIT              0xFFFFFF0F
+#define DMA1_7_BIT              0xFFFFF0FF
+#define DMA1_8_BIT              0xFFFF0FFF
+#define DMA1_9_BIT              0xFFF0FFFF
+#define DMA1_10_BIT             0xFF0FFFFF
+#define DMA1_11_BIT             0xF0FFFFFF
+#define DMA2_0_BIT              0x0FFFFFFF
+/* IAR3 BIT FIELDS */
+#define DMA2_1_BIT              0xFFFFFFFF
+#define DMA2_2_BIT              0xFFFFFF0F
+#define DMA2_3_BIT              0xFFFFF0FF
+#define DMA2_4_BIT              0xFFFF0FFF
+#define DMA2_5_BIT              0xFFF0FFFF
+#define DMA2_6_BIT              0xFF0FFFFF
+#define DMA2_7_BIT              0xF0FFFFFF
+#define DMA2_8_BIT              0x0FFFFFFF
+/* IAR4 BIT FIELDS */
+#define DMA2_9_BIT              0xFFFFFFFF
+#define DMA2_10_BIT             0xFFFFFF0F
+#define DMA2_11_BIT             0xFFFFF0FF
+#define TIMER0_BIT              0xFFFF0FFF
+#define TIMER1_BIT              0xFFF0FFFF
+#define TIMER2_BIT              0xFF0FFFFF
+#define TIMER3_BIT              0xF0FFFFFF
+#define TIMER4_BIT              0x0FFFFFFF
+/* IAR5 BIT FIELDS */
+#define TIMER5_BIT              0xFFFFFFFF
+#define TIMER6_BIT              0xFFFFFF0F
+#define TIMER7_BIT              0xFFFFF0FF
+#define TIMER8_BIT              0xFFFF0FFF
+#define TIMER9_BIT              0xFFF0FFFF
+#define TIMER10_BIT             0xFF0FFFFF
+#define TIMER11_BIT             0xF0FFFFFF
+#define PROG0_INTA_BIT          0x0FFFFFFF
+/* IAR6 BIT FIELDS */
+#define PROG0_INTB_BIT          0xFFFFFFFF
+#define PROG1_INTA_BIT          0xFFFFFF0F
+#define PROG1_INTB_BIT          0xFFFFF0FF
+#define PROG2_INTA_BIT          0xFFFF0FFF
+#define PROG2_INTB_BIT          0xFFF0FFFF
+#define DMA1_WRRD0_BIT          0xFF0FFFFF
+#define DMA1_WRRD1_BIT          0xF0FFFFFF
+#define DMA2_WRRD0_BIT          0x0FFFFFFF
+/* IAR7 BIT FIELDS */
+#define DMA2_WRRD1_BIT          0xFFFFFFFF
+#define IMDMA_WRRD0_BIT         0xFFFFFF0F
+#define IMDMA_WRRD1_BIT         0xFFFFF0FF
+#define WATCH_BIT               0xFFFF0FFF
+#define RESERVED_1_BIT          0xFFF0FFFF
+#define RESERVED_2_BIT          0xFF0FFFFF
+#define SUPPLE_0_BIT            0xF0FFFFFF
+#define SUPPLE_1_BIT            0x0FFFFFFF
+
+/* Miscellaneous Values */
+
+/****************************** EBIU Settings ********************************/
+#define AMBCTL0VAL      ((CONFIG_BANK_1 << 16) | CONFIG_BANK_0)
+#define AMBCTL1VAL      ((CONFIG_BANK_3 << 16) | CONFIG_BANK_2)
+
+#if defined(CONFIG_C_AMBEN_ALL)
+#define V_AMBEN AMBEN_ALL
+#elif defined(CONFIG_C_AMBEN)
+#define V_AMBEN 0x0
+#elif defined(CONFIG_C_AMBEN_B0)
+#define V_AMBEN AMBEN_B0
+#elif defined(CONFIG_C_AMBEN_B0_B1)
+#define V_AMBEN AMBEN_B0_B1
+#elif defined(CONFIG_C_AMBEN_B0_B1_B2)
+#define V_AMBEN AMBEN_B0_B1_B2
+#endif
+
+#ifdef CONFIG_C_AMCKEN
+#define V_AMCKEN AMCKEN
+#else
+#define V_AMCKEN 0x0
+#endif
+
+#ifdef CONFIG_C_B0PEN
+#define V_B0PEN 0x10
+#else
+#define V_B0PEN 0x00
+#endif
+
+#ifdef CONFIG_C_B1PEN
+#define V_B1PEN 0x20
+#else
+#define V_B1PEN 0x00
+#endif
+
+#ifdef CONFIG_C_B2PEN
+#define V_B2PEN 0x40
+#else
+#define V_B2PEN 0x00
+#endif
+
+#ifdef CONFIG_C_B3PEN
+#define V_B3PEN 0x80
+#else
+#define V_B3PEN 0x00
+#endif
+
+#ifdef CONFIG_C_CDPRIO
+#define V_CDPRIO 0x100
+#else
+#define V_CDPRIO 0x0
+#endif
+
+#define AMGCTLVAL       (V_AMBEN | V_AMCKEN | V_CDPRIO | V_B0PEN | V_B1PEN | V_B2PEN | V_B3PEN | 0x0002)
+
+#define MAX_VC  600000000
+#define MIN_VC  50000000
+
+/******************************* PLL Settings ********************************/
+#ifdef CONFIG_BFIN_KERNEL_CLOCK
+#if (CONFIG_VCO_MULT < 0)
+#error "VCO Multiplier is less than 0. Please select a different value"
+#endif
+
+#if (CONFIG_VCO_MULT == 0)
+#error "VCO Multiplier should be greater than 0. Please select a different value"
+#endif
+
+#ifndef CONFIG_CLKIN_HALF
+#define CONFIG_VCO_HZ   (CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)
+#else
+#define CONFIG_VCO_HZ   ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)/2)
+#endif
+
+#ifndef CONFIG_PLL_BYPASS
+#define CONFIG_CCLK_HZ  (CONFIG_VCO_HZ/CONFIG_CCLK_DIV)
+#define CONFIG_SCLK_HZ  (CONFIG_VCO_HZ/CONFIG_SCLK_DIV)
+#else
+#define CONFIG_CCLK_HZ  CONFIG_CLKIN_HZ
+#define CONFIG_SCLK_HZ  CONFIG_CLKIN_HZ
+#endif
+
+#if (CONFIG_SCLK_DIV < 1)
+#error "SCLK DIV cannot be less than 1 or more than 15. Please select a proper value"
+#endif
+
+#if (CONFIG_SCLK_DIV > 15)
+#error "SCLK DIV cannot be less than 1 or more than 15. Please select a proper value"
+#endif
+
+#if (CONFIG_CCLK_DIV != 1)
+#if (CONFIG_CCLK_DIV != 2)
+#if (CONFIG_CCLK_DIV != 4)
+#if (CONFIG_CCLK_DIV != 8)
+#error "CCLK DIV can be 1,2,4 or 8 only. Please select a proper value"
+#endif
+#endif
+#endif
+#endif
+
+#if (CONFIG_VCO_HZ > MAX_VC)
+#error "VCO selected is more than maximum value. Please change the VCO multipler"
+#endif
+
+#if (CONFIG_SCLK_HZ > 133000000)
+#error "Sclk value selected is more than maximum. Please select a proper value for SCLK multiplier"
+#endif
+
+#if (CONFIG_SCLK_HZ < 27000000)
+#error "Sclk value selected is less than minimum. Please select a proper value for SCLK multiplier"
+#endif
+
+#if (CONFIG_SCLK_HZ >= CONFIG_CCLK_HZ)
+#if (CONFIG_SCLK_HZ != CONFIG_CLKIN_HZ)
+#if (CONFIG_CCLK_HZ != CONFIG_CLKIN_HZ)
+#error "Please select sclk less than cclk"
+#endif
+#endif
+#endif
+
+#if (CONFIG_CCLK_DIV == 1)
+#define CONFIG_CCLK_ACT_DIV   CCLK_DIV1
+#endif
+#if (CONFIG_CCLK_DIV == 2)
+#define CONFIG_CCLK_ACT_DIV   CCLK_DIV2
+#endif
+#if (CONFIG_CCLK_DIV == 4)
+#define CONFIG_CCLK_ACT_DIV   CCLK_DIV4
+#endif
+#if (CONFIG_CCLK_DIV == 8)
+#define CONFIG_CCLK_ACT_DIV   CCLK_DIV8
+#endif
+#ifndef CONFIG_CCLK_ACT_DIV
+#define CONFIG_CCLK_ACT_DIV   CONFIG_CCLK_DIV_not_defined_properly
+#endif
+
+#if defined(ANOMALY_05000273) && (CONFIG_CCLK_DIV == 1)
+#error ANOMALY 05000273, please make sure CCLK is at least 2x SCLK
+#endif
+
+#endif                          /* CONFIG_BFIN_KERNEL_CLOCK */
+
+#ifdef CONFIG_BF561
+#define CPU "BF561"
+#define CPUID 0x027bb000
+#endif
+#ifndef CPU
+#define CPU "UNKNOWN"
+#define CPUID 0x0
+#endif
+
+#if (CONFIG_MEM_SIZE % 4)
+#error "SDRAM memory size must be a multiple of 4MB!"
+#endif
+#define SDRAM_IGENERIC    (CPLB_L1_CHBL | CPLB_USER_RD | CPLB_VALID | CPLB_PORTPRIO)
+#define SDRAM_IKERNEL     (SDRAM_IGENERIC | CPLB_LOCK)
+#define L1_IMEMORY        (               CPLB_USER_RD | CPLB_VALID | CPLB_LOCK)
+#define SDRAM_INON_CHBL   (               CPLB_USER_RD | CPLB_VALID)
+
+/*Use the menuconfig cache policy here - CONFIG_BLKFIN_WT/CONFIG_BLKFIN_WB*/
+
+#define ANOMALY_05000158_WORKAROUND             0x200
+#ifdef CONFIG_BLKFIN_WB         /*Write Back Policy */
+#define SDRAM_DGENERIC   (CPLB_L1_CHBL | CPLB_DIRTY \
+                        | CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID | ANOMALY_05000158_WORKAROUND)
+#else                           /*Write Through */
+#define SDRAM_DGENERIC   (CPLB_L1_CHBL | CPLB_WT | CPLB_L1_AOW | CPLB_DIRTY \
+                        | CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID | ANOMALY_05000158_WORKAROUND)
+#endif
+
+
+#define L1_DMEMORY       (CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID | ANOMALY_05000158_WORKAROUND | CPLB_LOCK | CPLB_DIRTY)
+#define SDRAM_DNON_CHBL  (CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID | ANOMALY_05000158_WORKAROUND | CPLB_DIRTY)
+#define SDRAM_EBIU       (CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID | ANOMALY_05000158_WORKAROUND | CPLB_DIRTY)
+#define SDRAM_OOPS       (CPLB_VALID | ANOMALY_05000158_WORKAROUND | CPLB_LOCK | CPLB_DIRTY)
+
+#define L2_MEMORY       (CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID | ANOMALY_05000158_WORKAROUND | CPLB_DIRTY)
+
+#define SIZE_1K 0x00000400      /* 1K */
+#define SIZE_4K 0x00001000      /* 4K */
+#define SIZE_1M 0x00100000      /* 1M */
+#define SIZE_4M 0x00400000      /* 4M */
+
+#define MAX_CPLBS (16 * 2)
+
+/*
+* Number of required data CPLB switchtable entries
+* MEMSIZE / 4 (we mostly install 4M page size CPLBs
+* approx 16 for smaller 1MB page size CPLBs for allignment purposes
+* 1 for L1 Data Memory
+* 1 for L2 Data Memory
+* 1 for CONFIG_DEBUG_HUNT_FOR_ZERO
+* 64 for ASYNC Memory
+*/
+
+
+#define MAX_SWITCH_D_CPLBS (((CONFIG_MEM_SIZE / 4) + 16 + 1 + 1 + 1 + 64) * 2)
+
+/*
+* Number of required instruction CPLB switchtable entries
+* MEMSIZE / 4 (we mostly install 4M page size CPLBs
+* approx 12 for smaller 1MB page size CPLBs for allignment purposes
+* 1 for L1 Instruction Memory
+* 1 for L2 Instruction Memory
+* 1 for CONFIG_DEBUG_HUNT_FOR_ZERO
+*/
+
+#define MAX_SWITCH_I_CPLBS (((CONFIG_MEM_SIZE / 4) + 12 + 1 + 1 + 1) * 2)
+
+#if 0                           /* comment by mhfan */
+/* Event Vector Table Address */
+#define EVT_EMULATION_ADDR      0xffe02000
+#define EVT_RESET_ADDR          0xffe02004
+#define EVT_NMI_ADDR            0xffe02008
+#define EVT_EXCEPTION_ADDR      0xffe0200c
+#define EVT_GLOBAL_INT_ENB_ADDR 0xffe02010
+#define EVT_HARDWARE_ERROR_ADDR 0xffe02014
+#define EVT_TIMER_ADDR          0xffe02018
+#define EVT_IVG7_ADDR           0xffe0201c
+#define EVT_IVG8_ADDR           0xffe02020
+#define EVT_IVG9_ADDR           0xffe02024
+#define EVT_IVG10_ADDR          0xffe02028
+#define EVT_IVG11_ADDR          0xffe0202c
+#define EVT_IVG12_ADDR          0xffe02030
+#define EVT_IVG13_ADDR          0xffe02034
+#define EVT_IVG14_ADDR          0xffe02038
+#define EVT_IVG15_ADDR          0xffe0203c
+#define EVT_OVERRIDE_ADDR       0xffe02100
+#endif                          /* comment by mhfan */
+
+#endif                          /* __MACH_BF561_H__  */