+++ /dev/null
-/*
- * arch/arm/include/asm/arch-pxa/macro.h
- *
- * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.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
- */
-
-#ifndef __ASM_ARCH_PXA_MACRO_H__
-#define __ASM_ARCH_PXA_MACRO_H__
-#ifdef __ASSEMBLY__
-
-#include <asm/macro.h>
-#include <asm/arch/pxa-regs.h>
-
-/*
- * This macro performs a 32bit write to a memory location and makes sure the
- * write operation really happened by performing a read back.
- *
- * Clobbered regs: r4, r5
- */
-.macro write32rb addr, data
- ldr r4, =\addr
- ldr r5, =\data
- str r5, [r4]
- ldr r5, [r4]
-.endm
-
-/*
- * This macro waits according to OSCR incrementation
- *
- * Clobbered regs: r4, r5, r6
- */
-.macro pxa_wait_ticks ticks
- ldr r4, =OSCR
- mov r5, #0
- str r5, [r4]
- ldr r5, =\ticks
-1:
- ldr r6, [r4]
- cmp r5, r6
- bgt 1b
-.endm
-
-/*
- * This macro sets up the GPIO pins of the PXA2xx/PXA3xx CPU
- *
- * Clobbered regs: r4, r5
- */
-.macro pxa_gpio_setup
- write32 GPSR0, CONFIG_SYS_GPSR0_VAL
- write32 GPSR1, CONFIG_SYS_GPSR1_VAL
- write32 GPSR2, CONFIG_SYS_GPSR2_VAL
-#if defined(CONFIG_PXA27X) || defined(CONFIG_CPU_MONAHANS)
- write32 GPSR3, CONFIG_SYS_GPSR3_VAL
-#endif
-
- write32 GPCR0, CONFIG_SYS_GPCR0_VAL
- write32 GPCR1, CONFIG_SYS_GPCR1_VAL
- write32 GPCR2, CONFIG_SYS_GPCR2_VAL
-#if defined(CONFIG_PXA27X) || defined(CONFIG_CPU_MONAHANS)
- write32 GPCR3, CONFIG_SYS_GPCR3_VAL
-#endif
-
- write32 GPDR0, CONFIG_SYS_GPDR0_VAL
- write32 GPDR1, CONFIG_SYS_GPDR1_VAL
- write32 GPDR2, CONFIG_SYS_GPDR2_VAL
-#if defined(CONFIG_PXA27X) || defined(CONFIG_CPU_MONAHANS)
- write32 GPDR3, CONFIG_SYS_GPDR3_VAL
-#endif
-
- write32 GAFR0_L, CONFIG_SYS_GAFR0_L_VAL
- write32 GAFR0_U, CONFIG_SYS_GAFR0_U_VAL
- write32 GAFR1_L, CONFIG_SYS_GAFR1_L_VAL
- write32 GAFR1_U, CONFIG_SYS_GAFR1_U_VAL
- write32 GAFR2_L, CONFIG_SYS_GAFR2_L_VAL
- write32 GAFR2_U, CONFIG_SYS_GAFR2_U_VAL
-#if defined(CONFIG_PXA27X) || defined(CONFIG_CPU_MONAHANS)
- write32 GAFR3_L, CONFIG_SYS_GAFR3_L_VAL
- write32 GAFR3_U, CONFIG_SYS_GAFR3_U_VAL
-#endif
-
- write32 PSSR, CONFIG_SYS_PSSR_VAL
-.endm
-
-/*
- * This macro sets up the Memory controller of the PXA2xx CPU
- *
- * WARNING: This macro uses internally r3 and r7 regs for MEMC_BASE
- * and CONFIG_SYS_MDREFR_VAL correspondingly. Please do not
- * use this regs for other purpose inside this macro.
- *
- * Clobbered regs: r3, r4, r5, r6, r7
- */
-.macro pxa_mem_setup
- /* This comes handy when setting MDREFR */
- ldr r3, =MEMC_BASE
-
- /*
- * 1) Initialize Asynchronous static memory controller
- */
-
- /* MSC0: nCS(0,1) */
- write32rb (MEMC_BASE + MSC0_OFFSET), CONFIG_SYS_MSC0_VAL
- /* MSC1: nCS(2,3) */
- write32rb (MEMC_BASE + MSC1_OFFSET), CONFIG_SYS_MSC1_VAL
- /* MSC2: nCS(4,5) */
- write32rb (MEMC_BASE + MSC2_OFFSET), CONFIG_SYS_MSC2_VAL
-
- /*
- * 2) Initialize Card Interface
- */
-
- /* MECR: Memory Expansion Card Register */
- write32rb (MEMC_BASE + MECR_OFFSET), CONFIG_SYS_MECR_VAL
- /* MCMEM0: Card Interface slot 0 timing */
- write32rb (MEMC_BASE + MCMEM0_OFFSET), CONFIG_SYS_MCMEM0_VAL
- /* MCMEM1: Card Interface slot 1 timing */
- write32rb (MEMC_BASE + MCMEM1_OFFSET), CONFIG_SYS_MCMEM1_VAL
- /* MCATT0: Card Interface Attribute Space Timing, slot 0 */
- write32rb (MEMC_BASE + MCATT0_OFFSET), CONFIG_SYS_MCATT0_VAL
- /* MCATT1: Card Interface Attribute Space Timing, slot 1 */
- write32rb (MEMC_BASE + MCATT1_OFFSET), CONFIG_SYS_MCATT1_VAL
- /* MCIO0: Card Interface I/O Space Timing, slot 0 */
- write32rb (MEMC_BASE + MCIO0_OFFSET), CONFIG_SYS_MCIO0_VAL
- /* MCIO1: Card Interface I/O Space Timing, slot 1 */
- write32rb (MEMC_BASE + MCIO1_OFFSET), CONFIG_SYS_MCIO1_VAL
-
- /*
- * 3) Configure Fly-By DMA register
- */
-
- write32rb (MEMC_BASE + FLYCNFG_OFFSET), CONFIG_SYS_FLYCNFG_VAL
-
- /*
- * 4) Initialize Timing for Sync Memory (SDCLK0)
- */
-
- /*
- * Before accessing MDREFR we need a valid DRI field, so we set
- * this to power on defaults + DRI field.
- */
- ldr r5, [r3, #MDREFR_OFFSET]
- bic r5, r5, #0x0ff
- bic r5, r5, #0xf00 /* MDREFR user config with zeroed DRI */
-
- ldr r4, =CONFIG_SYS_MDREFR_VAL
- mov r7, r4
- lsl r4, #20
- lsr r4, #20 /* Get a valid DRI field */
-
- orr r5, r5, r4 /* MDREFR user config with correct DRI */
-
- orr r5, #MDREFR_K0RUN
- orr r5, #MDREFR_SLFRSH
- bic r5, #MDREFR_APD
- bic r5, #MDREFR_E1PIN
-
- str r5, [r3, #MDREFR_OFFSET]
- ldr r4, [r3, #MDREFR_OFFSET]
-
- /*
- * 5) Initialize Synchronous Static Memory (Flash/Peripherals)
- */
-
- /* Initialize SXCNFG register. Assert the enable bits.
- *
- * Write SXMRS to cause an MRS command to all enabled banks of
- * synchronous static memory. Note that SXLCR need not be written
- * at this time.
- */
- write32rb (MEMC_BASE + SXCNFG_OFFSET), CONFIG_SYS_SXCNFG_VAL
-
- /*
- * 6) Initialize SDRAM
- */
-
- bic r7, #MDREFR_SLFRSH
- str r7, [r3, #MDREFR_OFFSET]
- ldr r4, [r3, #MDREFR_OFFSET]
-
- orr r7, #MDREFR_E1PIN
- str r7, [r3, #MDREFR_OFFSET]
- ldr r4, [r3, #MDREFR_OFFSET]
-
- /*
- * 7) Write MDCNFG with MDCNFG:DEx deasserted (set to 0), to configure
- * but not enable each SDRAM partition pair.
- */
-
- /* Fetch platform value of MDCNFG */
- ldr r4, =CONFIG_SYS_MDCNFG_VAL
- /* Disable all sdram banks */
- bic r4, r4, #(MDCNFG_DE0|MDCNFG_DE1)
- bic r4, r4, #(MDCNFG_DE2|MDCNFG_DE3)
- /* Write initial value of MDCNFG, w/o enabling sdram banks */
- str r4, [r3, #MDCNFG_OFFSET]
- ldr r4, [r3, #MDCNFG_OFFSET]
-
- /* Wait for the clock to the SDRAMs to stabilize, 100..200 usec. */
- pxa_wait_ticks 0x300
-
- /*
- * 8) Trigger a number (usually 8) refresh cycles by attempting
- * non-burst read or write accesses to disabled SDRAM, as commonly
- * specified in the power up sequence documented in SDRAM data
- * sheets. The address(es) used for this purpose must not be
- * cacheable.
- */
-
- ldr r4, =CONFIG_SYS_DRAM_BASE
-.rept 9
- str r5, [r4]
-.endr
-
- /*
- * 9) Write MDCNFG with enable bits asserted (MDCNFG:DEx set to 1).
- */
-
- ldr r5, =CONFIG_SYS_MDCNFG_VAL
- ldr r4, =(MDCNFG_DE0 | MDCNFG_DE1 | MDCNFG_DE2 | MDCNFG_DE3)
- and r5, r5, r4
- ldr r4, [r3, #MDCNFG_OFFSET]
- orr r4, r4, r5
- str r4, [r3, #MDCNFG_OFFSET]
- ldr r4, [r3, #MDCNFG_OFFSET]
-
- /*
- * 10) Write MDMRS.
- */
-
- ldr r4, =CONFIG_SYS_MDMRS_VAL
- str r4, [r3, #MDMRS_OFFSET]
- ldr r4, [r3, #MDMRS_OFFSET]
-
- /*
- * 11) Enable APD
- */
-
- ldr r4, [r3, #MDREFR_OFFSET]
- and r7, r7, #MDREFR_APD
- orr r4, r4, r7
- str r4, [r3, #MDREFR_OFFSET]
- ldr r4, [r3, #MDREFR_OFFSET]
-.endm
-
-/*
- * This macro tests if the CPU woke up from sleep and eventually resumes
- *
- * Clobbered regs: r4, r5
- */
-.macro pxa_wakeup
- ldr r4, =RCSR
- ldr r5, [r4]
- and r5, r5, #(RCSR_GPR | RCSR_SMR | RCSR_WDR | RCSR_HWR)
- str r5, [r4]
- teq r5, #RCSR_SMR
-
- bne pxa_wakeup_exit
-
- ldr r4, =PSSR
- mov r5, #PSSR_PH
- str r5, [r4]
-
- ldr r4, =PSPR
- ldr pc, [r4]
-pxa_wakeup_exit:
-.endm
-
-/*
- * This macro disables all interupts on PXA2xx/PXA3xx CPU
- *
- * Clobbered regs: r4, r5
- */
-.macro pxa_intr_setup
- write32 ICLR, 0
- write32 ICMR, 0
-#if defined(CONFIG_PXA27X) || defined(CONFIG_CPU_MONAHANS)
- write32 ICLR2, 0
- write32 ICMR2, 0
-#endif
-.endm
-
-/*
- * This macro configures clock on PXA2xx/PXA3xx CPU
- *
- * Clobbered regs: r4, r5
- */
-.macro pxa_clock_setup
- /* Disable the peripheral clocks, and set the core clock frequency */
-
- /* Turn Off ALL on-chip peripheral clocks for re-configuration */
- write32 CKEN, CONFIG_SYS_CKEN
-
- /* Write CCCR */
- write32 CCCR, CONFIG_SYS_CCCR
-
-#ifdef CONFIG_RTC
- /* enable the 32Khz oscillator for RTC and PowerManager */
- write32 OSCC, #OSCC_OON
- ldr r4, =OSCC
-
- /* Spin here until OSCC.OOK get set, meaning the PLL has settled. */
-2:
- ldr r5, [r4]
- ands r5, r5, #1
- beq 2b
-#endif
-.endm
-
-#endif /* __ASSEMBLY__ */
-#endif /* __ASM_ARCH_PXA_MACRO_H__ */
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