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u-boot/arch/arm/mach-at91/arm920t/lowlevel_init.S

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
/* SPDX-License-Identifier: GPL-2.0+ */
prepare joining at91rm9200 into at91 * prepare joining at91 and at91rm9200 * add modified copy of soc files to cpu/arm920t/at91 to make possible to compile at91rm9200 boards in at91 tree instead of at91rm9200 * add header files with c structure defs for AT91 MC, ST and TC * the new cpu files are using at91 c structure soc access * please read README.soc-at91 for details Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
2010-02-03 21:47:35 +00:00
/*
* Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and
* Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl)
*
* Modified for the at91rm9200dk board by
* (C) Copyright 2004
* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
*/
#include <config.h>
Convert CONFIG_SKIP_LOWLEVEL_INIT et al to Kconfig This converts the following to Kconfig: CONFIG_SKIP_LOWLEVEL_INIT CONFIG_SKIP_LOWLEVEL_INIT_ONLY In order to do this, we need to introduce SPL and TPL variants of these options so that we can clearly disable these options only in SPL in some cases, and both instances in other cases. Signed-off-by: Tom Rini <trini@konsulko.com>
2021-08-28 01:18:30 +00:00
#if !CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT)
prepare joining at91rm9200 into at91 * prepare joining at91 and at91rm9200 * add modified copy of soc files to cpu/arm920t/at91 to make possible to compile at91rm9200 boards in at91 tree instead of at91rm9200 * add header files with c structure defs for AT91 MC, ST and TC * the new cpu files are using at91 c structure soc access * please read README.soc-at91 for details Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
2010-02-03 21:47:35 +00:00
#include <asm/arch/hardware.h>
#include <asm/arch/at91_mc.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/at91_pio.h>
#define ARM920T_CONTROL 0xC0000000 /* @ set bit 31 (iA) and 30 (nF) */
_MTEXT_BASE:
#undef START_FROM_MEM
#ifdef START_FROM_MEM
Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE The change is currently needed to be able to remove the board configuration scripting from the top level Makefile and replace it by a simple, table driven script. Moving this configuration setting into the "CONFIG_*" name space is also desirable because it is needed if we ever should move forward to a Kconfig driven configuration system. Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-07 19:51:12 +00:00
.word CONFIG_SYS_TEXT_BASE-PHYS_FLASH_1
prepare joining at91rm9200 into at91 * prepare joining at91 and at91rm9200 * add modified copy of soc files to cpu/arm920t/at91 to make possible to compile at91rm9200 boards in at91 tree instead of at91rm9200 * add header files with c structure defs for AT91 MC, ST and TC * the new cpu files are using at91 c structure soc access * please read README.soc-at91 for details Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
2010-02-03 21:47:35 +00:00
#else
Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE The change is currently needed to be able to remove the board configuration scripting from the top level Makefile and replace it by a simple, table driven script. Moving this configuration setting into the "CONFIG_*" name space is also desirable because it is needed if we ever should move forward to a Kconfig driven configuration system. Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-07 19:51:12 +00:00
.word CONFIG_SYS_TEXT_BASE
prepare joining at91rm9200 into at91 * prepare joining at91 and at91rm9200 * add modified copy of soc files to cpu/arm920t/at91 to make possible to compile at91rm9200 boards in at91 tree instead of at91rm9200 * add header files with c structure defs for AT91 MC, ST and TC * the new cpu files are using at91 c structure soc access * please read README.soc-at91 for details Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
2010-02-03 21:47:35 +00:00
#endif
.globl lowlevel_init
lowlevel_init:
ldr r1, =AT91_ASM_PMC_MOR
/* Main oscillator Enable register */
#ifdef CONFIG_SYS_USE_MAIN_OSCILLATOR
ldr r0, =0x0000FF01 /* Enable main oscillator */
#else
ldr r0, =0x0000FF00 /* Disable main oscillator */
#endif
str r0, [r1] /*AT91C_CKGR_MOR] */
/* Add loop to compensate Main Oscillator startup time */
ldr r0, =0x00000010
LoopOsc:
subs r0, r0, #1
bhi LoopOsc
/* memory control configuration */
/* this isn't very elegant, but what the heck */
ldr r0, =SMRDATA
ldr r1, _MTEXT_BASE
sub r0, r0, r1
at91rm9200: fix lowlevel_init() SMRDATA size * use start/end label for initialization tables instead of fix values Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de> Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>
2010-12-18 02:30:04 +00:00
ldr r2, =SMRDATAE
sub r2, r2, r1
prepare joining at91rm9200 into at91 * prepare joining at91 and at91rm9200 * add modified copy of soc files to cpu/arm920t/at91 to make possible to compile at91rm9200 boards in at91 tree instead of at91rm9200 * add header files with c structure defs for AT91 MC, ST and TC * the new cpu files are using at91 c structure soc access * please read README.soc-at91 for details Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
2010-02-03 21:47:35 +00:00
pllloop:
/* the address */
ldr r1, [r0], #4
/* the value */
ldr r3, [r0], #4
str r3, [r1]
cmp r2, r0
bne pllloop
/* delay - this is all done by guess */
ldr r0, =0x00010000
/* (vs reading PMC_SR for LOCKA, LOCKB ... or MOSCS earlier) */
lock:
subs r0, r0, #1
bhi lock
ldr r0, =SMRDATA1
ldr r1, _MTEXT_BASE
sub r0, r0, r1
at91rm9200: fix lowlevel_init() SMRDATA size * use start/end label for initialization tables instead of fix values Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de> Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>
2010-12-18 02:30:04 +00:00
ldr r2, =SMRDATA1E
sub r2, r2, r1
prepare joining at91rm9200 into at91 * prepare joining at91 and at91rm9200 * add modified copy of soc files to cpu/arm920t/at91 to make possible to compile at91rm9200 boards in at91 tree instead of at91rm9200 * add header files with c structure defs for AT91 MC, ST and TC * the new cpu files are using at91 c structure soc access * please read README.soc-at91 for details Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
2010-02-03 21:47:35 +00:00
sdinit:
/* the address */
ldr r1, [r0], #4
/* the value */
ldr r3, [r0], #4
str r3, [r1]
cmp r2, r0
bne sdinit
/* switch from FastBus to Asynchronous clock mode */
mrc p15, 0, r0, c1, c0, 0
orr r0, r0, #ARM920T_CONTROL
mcr p15, 0, r0, c1, c0, 0
/* everything is fine now */
mov pc, lr
.ltorg
SMRDATA:
.word AT91_ASM_MC_EBI_CFG
.word CONFIG_SYS_EBI_CFGR_VAL
.word AT91_ASM_MC_SMC_CSR0
.word CONFIG_SYS_SMC_CSR0_VAL
.word AT91_ASM_PMC_PLLAR
.word CONFIG_SYS_PLLAR_VAL
.word AT91_ASM_PMC_PLLBR
.word CONFIG_SYS_PLLBR_VAL
.word AT91_ASM_PMC_MCKR
.word CONFIG_SYS_MCKR_VAL
at91rm9200: fix lowlevel_init() SMRDATA size * use start/end label for initialization tables instead of fix values Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de> Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>
2010-12-18 02:30:04 +00:00
SMRDATAE:
prepare joining at91rm9200 into at91 * prepare joining at91 and at91rm9200 * add modified copy of soc files to cpu/arm920t/at91 to make possible to compile at91rm9200 boards in at91 tree instead of at91rm9200 * add header files with c structure defs for AT91 MC, ST and TC * the new cpu files are using at91 c structure soc access * please read README.soc-at91 for details Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
2010-02-03 21:47:35 +00:00
/* here there's a delay */
SMRDATA1:
.word AT91_ASM_PIOC_ASR
.word CONFIG_SYS_PIOC_ASR_VAL
.word AT91_ASM_PIOC_BSR
.word CONFIG_SYS_PIOC_BSR_VAL
.word AT91_ASM_PIOC_PDR
.word CONFIG_SYS_PIOC_PDR_VAL
.word AT91_ASM_MC_EBI_CSA
.word CONFIG_SYS_EBI_CSA_VAL
.word AT91_ASM_MC_SDRAMC_CR
.word CONFIG_SYS_SDRC_CR_VAL
.word AT91_ASM_MC_SDRAMC_MR
.word CONFIG_SYS_SDRC_MR_VAL
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
.word AT91_ASM_MC_SDRAMC_MR
.word CONFIG_SYS_SDRC_MR_VAL1
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
.word AT91_ASM_MC_SDRAMC_MR
.word CONFIG_SYS_SDRC_MR_VAL2
.word CONFIG_SYS_SDRAM1
.word CONFIG_SYS_SDRAM_VAL
.word AT91_ASM_MC_SDRAMC_TR
.word CONFIG_SYS_SDRC_TR_VAL
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
.word AT91_ASM_MC_SDRAMC_MR
.word CONFIG_SYS_SDRC_MR_VAL3
.word CONFIG_SYS_SDRAM
.word CONFIG_SYS_SDRAM_VAL
at91rm9200: fix lowlevel_init() SMRDATA size * use start/end label for initialization tables instead of fix values Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de> Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>
2010-12-18 02:30:04 +00:00
SMRDATA1E:
prepare joining at91rm9200 into at91 * prepare joining at91 and at91rm9200 * add modified copy of soc files to cpu/arm920t/at91 to make possible to compile at91rm9200 boards in at91 tree instead of at91rm9200 * add header files with c structure defs for AT91 MC, ST and TC * the new cpu files are using at91 c structure soc access * please read README.soc-at91 for details Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
2010-02-03 21:47:35 +00:00
/* SMRDATA1 is 176 bytes long */
Convert CONFIG_SKIP_LOWLEVEL_INIT et al to Kconfig This converts the following to Kconfig: CONFIG_SKIP_LOWLEVEL_INIT CONFIG_SKIP_LOWLEVEL_INIT_ONLY In order to do this, we need to introduce SPL and TPL variants of these options so that we can clearly disable these options only in SPL in some cases, and both instances in other cases. Signed-off-by: Tom Rini <trini@konsulko.com>
2021-08-28 01:18:30 +00:00
#endif /* CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT) */
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