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| author | Wolfgang Denk <wd@denx.de> | 2010-11-12 22:24:06 +0100 | 
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| committer | Wolfgang Denk <wd@denx.de> | 2010-11-12 22:24:06 +0100 | 
| commit | d963e84c92a63b4e6c4f2f80482a5ecbe9b24fe0 (patch) | |
| tree | 07dd5889d73f4b66ad608815adcf6f2f953d9501 /board/pleb2/lowlevel_init.S | |
| parent | 66fca016057b1c6b697552cc7220ebada9d4f82d (diff) | |
| parent | 0c0892be0d93a5a892b93739c5eb3bf692fed4ff (diff) | |
| download | olio-uboot-2014.01-d963e84c92a63b4e6c4f2f80482a5ecbe9b24fe0.tar.xz olio-uboot-2014.01-d963e84c92a63b4e6c4f2f80482a5ecbe9b24fe0.zip | |
Merge branch 'master' of /home/wd/git/u-boot/master
Diffstat (limited to 'board/pleb2/lowlevel_init.S')
| -rw-r--r-- | board/pleb2/lowlevel_init.S | 488 | 
1 files changed, 0 insertions, 488 deletions
| diff --git a/board/pleb2/lowlevel_init.S b/board/pleb2/lowlevel_init.S deleted file mode 100644 index b95ff9cf2..000000000 --- a/board/pleb2/lowlevel_init.S +++ /dev/null @@ -1,488 +0,0 @@ -/* - * Most of this taken from Redboot hal_platform_setup.h with cleanup - * - * 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 <config.h> -#include <version.h> -#include <asm/arch/pxa-regs.h> - -DRAM_SIZE:  .long   CONFIG_SYS_DRAM_SIZE - -/* wait for coprocessor write complete */ -	.macro CPWAIT reg -	mrc	p15,0,\reg,c2,c0,0 -	mov	\reg,\reg -	sub	pc,pc,#4 -	.endm - -.globl lowlevel_init -lowlevel_init: - -	mov	r10, lr - -	/* Set up GPIO pins first */ - -	ldr	r0,   =GPSR0 -	ldr	r1,   =CONFIG_SYS_GPSR0_VAL -	str	r1,   [r0] - -	ldr	r0,   =GPSR1 -	ldr	r1,   =CONFIG_SYS_GPSR1_VAL -	str	r1,   [r0] - -	ldr	r0,   =GPSR2 -	ldr	r1,   =CONFIG_SYS_GPSR2_VAL -	str	r1,   [r0] - -	ldr	r0,   =GPCR0 -	ldr	r1,   =CONFIG_SYS_GPCR0_VAL -	str	r1,   [r0] - -	ldr	r0,   =GPCR1 -	ldr	r1,   =CONFIG_SYS_GPCR1_VAL -	str	r1,   [r0] - -	ldr	r0,   =GPCR2 -	ldr	r1,   =CONFIG_SYS_GPCR2_VAL -	str	r1,   [r0] - -	ldr	r0,   =GRER0 -	ldr	r1,   =CONFIG_SYS_GRER0_VAL -	str	r1,   [r0] - -	ldr	r0,   =GRER1 -	ldr	r1,   =CONFIG_SYS_GRER1_VAL -	str	r1,   [r0] - -	ldr	r0,   =GRER2 -	ldr	r1,   =CONFIG_SYS_GRER2_VAL -	str	r1,   [r0] - -	ldr	r0,   =GFER0 -	ldr	r1,   =CONFIG_SYS_GFER0_VAL -	str	r1,   [r0] - -	ldr	r0,   =GFER1 -	ldr	r1,   =CONFIG_SYS_GFER1_VAL -	str	r1,   [r0] - -	ldr	r0,   =GFER2 -	ldr	r1,   =CONFIG_SYS_GFER2_VAL -	str	r1,   [r0] - -	ldr	r0,   =GPDR0 -	ldr	r1,   =CONFIG_SYS_GPDR0_VAL -	str	r1,   [r0] - -	ldr	r0,   =GPDR1 -	ldr	r1,   =CONFIG_SYS_GPDR1_VAL -	str	r1,   [r0] - -	ldr	r0,   =GPDR2 -	ldr	r1,   =CONFIG_SYS_GPDR2_VAL -	str	r1,   [r0] - -	ldr	r0,   =GAFR0_L -	ldr	r1,   =CONFIG_SYS_GAFR0_L_VAL -	str	r1,   [r0] - -	ldr	r0,   =GAFR0_U -	ldr	r1,   =CONFIG_SYS_GAFR0_U_VAL -	str	r1,   [r0] - -	ldr	r0,   =GAFR1_L -	ldr	r1,   =CONFIG_SYS_GAFR1_L_VAL -	str	r1,   [r0] - -	ldr	r0,   =GAFR1_U -	ldr	r1,   =CONFIG_SYS_GAFR1_U_VAL -	str	r1,   [r0] - -	ldr	r0,   =GAFR2_L -	ldr	r1,   =CONFIG_SYS_GAFR2_L_VAL -	str	r1,   [r0] - -	ldr	r0,   =GAFR2_U -	ldr	r1,   =CONFIG_SYS_GAFR2_U_VAL -	str	r1,   [r0] - -	/* enable GPIO pins */ -	ldr	r0,   =PSSR -	ldr	r1,   =CONFIG_SYS_PSSR_VAL -	str	r1,   [r0] - - -/********************************************************************* -    Initlialize Memory Controller - -    See PXA250 Operating System Developer's Guide - -    pause for 200 uSecs- allow internal clocks to settle -    *Note: only need this if hard reset... doing it anyway for now -*/ - -	@ Step 1 -	@ ---- Wait 200 usec -	ldr	r3, =OSCR	@ reset the OS Timer Count to zero -	mov	r2, #0 -	str	r2, [r3] -	ldr	r4, =0x300	@ really 0x2E1 is about 200usec, so 0x300 should be plenty -1: -	ldr	r2, [r3] -	cmp	r4, r2 -	bgt	1b - -mem_init: -	@ get memory controller base address -	ldr	r1,  =MEMC_BASE - -@**************************************************************************** -@  Step 2 -@ - -	@ Step 2a -	@ write msc0, read back to ensure data latches -	@ -	ldr	r2,   =CONFIG_SYS_MSC0_VAL -	str	r2,   [r1, #MSC0_OFFSET] -	ldr	r2,   [r1, #MSC0_OFFSET] - -	@ write msc1 -	ldr	r2,  =CONFIG_SYS_MSC1_VAL -	str	r2,  [r1, #MSC1_OFFSET] -	ldr	r2,  [r1, #MSC1_OFFSET] - -	@ write msc2 -	ldr	r2,  =CONFIG_SYS_MSC2_VAL -	str	r2,  [r1, #MSC2_OFFSET] -	ldr	r2,  [r1, #MSC2_OFFSET] - - -@ Step 2b -	@ write mecr -	ldr	r2,  =CONFIG_SYS_MECR_VAL -	str	r2,  [r1, #MECR_OFFSET] - -	@ write mcmem0 -	ldr	r2,  =CONFIG_SYS_MCMEM0_VAL -	str	r2,  [r1, #MCMEM0_OFFSET] - -	@ write mcmem1 -	ldr	r2,  =CONFIG_SYS_MCMEM1_VAL -	str	r2,  [r1, #MCMEM1_OFFSET] - -	@ write mcatt0 -	ldr	r2,  =CONFIG_SYS_MCATT0_VAL -	str	r2,  [r1, #MCATT0_OFFSET] - -	@ write mcatt1 -	ldr	r2,  =CONFIG_SYS_MCATT1_VAL -	str	r2,  [r1, #MCATT1_OFFSET] - -	@ write mcio0 -	ldr	r2,  =CONFIG_SYS_MCIO0_VAL -	str	r2,  [r1, #MCIO0_OFFSET] - -	@ write mcio1 -	ldr	r2,  =CONFIG_SYS_MCIO1_VAL -	str	r2,  [r1, #MCIO1_OFFSET] - -@ Step 2c -	@ fly-by-dma is defeatured on this part -	@ write flycnfg -	@ldr	r2,  =CONFIG_SYS_FLYCNFG_VAL -	@str	r2,  [r1, #FLYCNFG_OFFSET] - -/* FIXME Does this sequence really make sense */ -#ifdef REDBOOT_WAY -	@ Step 2d -	@ get the mdrefr settings -	ldr	r3,  =CONFIG_SYS_MDREFR_VAL - -	@ extract DRI field (we need a valid DRI field) -	@ -	ldr	r2,  =0xFFF - -	@ valid DRI field in r3 -	@ -	and	r3,  r3,  r2 - -	@ get the reset state of MDREFR -	@ -	ldr	r4,  [r1, #MDREFR_OFFSET] - -	@ clear the DRI field -	@ -	bic	r4,  r4,  r2 - -	@ insert the valid DRI field loaded above -	@ -	orr	r4,  r4,  r3 - -	@ write back mdrefr -	@ -	str	r4,  [r1, #MDREFR_OFFSET] - -	@ *Note: preserve the mdrefr value in r4 * - -@**************************************************************************** -@  Step 3 -@ -@ NO SRAM - -	mov	pc, r10 - - -@**************************************************************************** -@  Step 4 -@ - -	@ Assumes previous mdrefr value in r4, if not then read current mdrefr - -	@ clear the free-running clock bits -	@ (clear K0Free, K1Free, K2Free -	@ -	bic	r4,  r4,  #(0x00800000 | 0x01000000 | 0x02000000) - -	@ set K0RUN for CPLD clock -	@ -	orr	r4,  r4,  #0x00002000 - -	@ set K1RUN if bank 0 installed -	@ -	orr	r4,  r4,  #0x00010000 - -	@ write back mdrefr -	@ -	str	r4,  [r1, #MDREFR_OFFSET] -	ldr	r4,  [r1, #MDREFR_OFFSET] - -	@ deassert SLFRSH -	@ -	bic	r4,  r4,  #0x00400000 - -	@ write back mdrefr -	@ -	str	r4,  [r1, #MDREFR_OFFSET] - -	@ assert E1PIN -	@ -	orr	r4,  r4,  #0x00008000 - -	@ write back mdrefr -	@ -	str	r4,  [r1, #MDREFR_OFFSET] -	ldr	r4,  [r1, #MDREFR_OFFSET] -	nop -	nop -#else -	@ Step 2d -	@ get the mdrefr settings -	ldr	r3,  =CONFIG_SYS_MDREFR_VAL - -	@ write back mdrefr -	@ -	str	r4,  [r1, #MDREFR_OFFSET] - -	@  Step 4 - -	@ set K0RUN for CPLD clock -	@ -	orr	r4,  r4,  #0x00002000 - -	@ set K1RUN for bank 0 -	@ -	orr	r4,  r4,  #0x00010000 - -	@ write back mdrefr -	@ -	str	r4,  [r1, #MDREFR_OFFSET] -	ldr	r4,  [r1, #MDREFR_OFFSET] - -	@ deassert SLFRSH -	@ -	bic	r4,  r4,  #0x00400000 - -	@ write back mdrefr -	@ -	str	r4,  [r1, #MDREFR_OFFSET] - -	@ assert E1PIN -	@ -	orr	r4,  r4,  #0x00008000 - -	@ write back mdrefr -	@ -	str	r4,  [r1, #MDREFR_OFFSET] -	ldr	r4,  [r1, #MDREFR_OFFSET] -	nop -	nop -#endif - -	@ Step 4d -	@ fetch platform value of mdcnfg -	@ -	ldr	r2,  =CONFIG_SYS_MDCNFG_VAL - -	@ disable all sdram banks -	@ -	bic	r2,  r2,  #(MDCNFG_DE0 | MDCNFG_DE1) -	bic	r2,  r2,  #(MDCNFG_DE2 | MDCNFG_DE3) - -	@ program banks 0/1 for bus width -	@ -	bic	r2,  r2,  #MDCNFG_DWID0	     @0=32-bit - -	@ write initial value of mdcnfg, w/o enabling sdram banks -	@ -	str	r2,  [r1, #MDCNFG_OFFSET] - -	@ Step 4e -	@ pause for 200 uSecs -	@ -	ldr	r3, =OSCR	@ reset the OS Timer Count to zero -	mov	r2, #0 -	str	r2, [r3] -	ldr	r4, =0x300			@ really 0x2E1 is about 200usec, so 0x300 should be plenty -	1: -	ldr	r2, [r3] -	cmp	r4, r2 -	bgt	1b - -	/* Why is this here??? */ -	mov	r0, #0x78		 @turn everything off -	mcr	p15, 0, r0, c1, c0, 0	   @(caches off, MMU off, etc.) - -	@ Step 4f -	@ Access memory *not yet enabled* for CBR refresh cycles (8) -	@ - CBR is generated for all banks - -	ldr	r2, =CONFIG_SYS_DRAM_BASE -	str	r2, [r2] -	str	r2, [r2] -	str	r2, [r2] -	str	r2, [r2] -	str	r2, [r2] -	str	r2, [r2] -	str	r2, [r2] -	str	r2, [r2] - -	@ Step 4g -	@get memory controller base address -	@ -	ldr	r1,  =MEMC_BASE - -	@fetch current mdcnfg value -	@ -	ldr	r3,  [r1, #MDCNFG_OFFSET] - -	@enable sdram bank 0 if installed (must do for any populated bank) -	@ -	orr	r3,  r3,  #MDCNFG_DE0 - -	@write back mdcnfg, enabling the sdram bank(s) -	@ -	str	r3,  [r1, #MDCNFG_OFFSET] - -	@ Step 4h -	@ write mdmrs -	@ -	ldr	r2,  =CONFIG_SYS_MDMRS_VAL -	str	r2,  [r1, #MDMRS_OFFSET] - -	@ Done Memory Init - -	/*SET_LED 6 */ - -	@******************************************************************** -	@ Disable (mask) all interrupts at the interrupt controller -	@ - -	@ clear the interrupt level register (use IRQ, not FIQ) -	@ -	mov	r1, #0 -	ldr	r2,  =ICLR -	str	r1,  [r2] - -	@ Set interrupt mask register -	@ -	ldr	r1,  =CONFIG_SYS_ICMR_VAL -	ldr	r2,  =ICMR -	str	r1,  [r2] - -	@ ******************************************************************** -	@ Disable the peripheral clocks, and set the core clock -	@ - -	@ Turn Off ALL on-chip peripheral clocks for re-configuration -	@ -	ldr	r1,  =CKEN -	mov	r2,  #0 -	str	r2,  [r1] - -	@ set core clocks -	@ -	ldr	r2,  =CONFIG_SYS_CCCR_VAL -	ldr	r1,  =CCCR -	str	r2,  [r1] - -	#ifdef ENABLE32KHZ -	@ enable the 32Khz oscillator for RTC and PowerManager -	@ -	ldr	r1,  =OSCC -	mov	r2,  #OSCC_OON -	str	r2,  [r1] - -	@ NOTE:	 spin here until OSCC.OOK get set, -	@	 meaning the PLL has settled. -	@ -60: -	ldr	r2, [r1] -	ands	r2, r2, #1 -	beq	60b -#endif - -	@ Turn on needed clocks -	@ -	ldr	r1,  =CKEN -	ldr	r2,  =CONFIG_SYS_CKEN_VAL -	str	r2,  [r1] - -	/*SET_LED 7 */ - -/* Is this needed???? */ -#define NODEBUG -#ifdef NODEBUG -   /*Disable software and data breakpoints */ -	mov	r0,#0 -	mcr	p15,0,r0,c14,c8,0  /* ibcr0 */ -	mcr	p15,0,r0,c14,c9,0  /* ibcr1 */ -	mcr	p15,0,r0,c14,c4,0  /* dbcon */ - -	/*Enable all debug functionality */ -	mov	r0,#0x80000000 -	mcr	p14,0,r0,c10,c0,0  /* dcsr */ - -#endif - -	mov	pc, r10 - -@ End lowlevel_init |