diff options
author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-02-22 16:50:53 (GMT) |
---|---|---|
committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2012-02-23 08:26:40 (GMT) |
commit | 0dcfed1486739afdce053ebdccac28076e9d9e1f (patch) | |
tree | d1827133c81612151fde94d7198865e405c85c9d | |
parent | 9e1c0b2ee8ae69dd4b35187ffbfb749272db3e00 (diff) | |
download | linux-fsl-qoriq-0dcfed1486739afdce053ebdccac28076e9d9e1f.tar.xz |
ARM: at91/pm_slowclock: rename register to named define
This patch will give a name to ARM registers in the assembly
source code. It is done to simplify the code reading and
the passing of parameters to functions.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
-rw-r--r-- | arch/arm/mach-at91/pm_slowclock.S | 177 |
1 files changed, 91 insertions, 86 deletions
diff --git a/arch/arm/mach-at91/pm_slowclock.S b/arch/arm/mach-at91/pm_slowclock.S index f8539a8..c802d30 100644 --- a/arch/arm/mach-at91/pm_slowclock.S +++ b/arch/arm/mach-at91/pm_slowclock.S @@ -46,17 +46,22 @@ #define PLLALOCK_TIMEOUT 1000 #define PLLBLOCK_TIMEOUT 1000 +pmc .req r1 +sdramc .req r2 +tmp1 .req r3 +tmp2 .req r4 +ramc1 .req r5 /* * Wait until master clock is ready (after switching master clock source) */ .macro wait_mckrdy - mov r4, #MCKRDY_TIMEOUT -1: sub r4, r4, #1 - cmp r4, #0 + mov tmp2, #MCKRDY_TIMEOUT +1: sub tmp2, tmp2, #1 + cmp tmp2, #0 beq 2f - ldr r3, [r1, #(AT91_PMC_SR - AT91_PMC)] - tst r3, #AT91_PMC_MCKRDY + ldr tmp1, [pmc, #(AT91_PMC_SR - AT91_PMC)] + tst tmp1, #AT91_PMC_MCKRDY beq 1b 2: .endm @@ -65,12 +70,12 @@ * Wait until master oscillator has stabilized. */ .macro wait_moscrdy - mov r4, #MOSCRDY_TIMEOUT -1: sub r4, r4, #1 - cmp r4, #0 + mov tmp2, #MOSCRDY_TIMEOUT +1: sub tmp2, tmp2, #1 + cmp tmp2, #0 beq 2f - ldr r3, [r1, #(AT91_PMC_SR - AT91_PMC)] - tst r3, #AT91_PMC_MOSCS + ldr tmp1, [pmc, #(AT91_PMC_SR - AT91_PMC)] + tst tmp1, #AT91_PMC_MOSCS beq 1b 2: .endm @@ -79,12 +84,12 @@ * Wait until PLLA has locked. */ .macro wait_pllalock - mov r4, #PLLALOCK_TIMEOUT -1: sub r4, r4, #1 - cmp r4, #0 + mov tmp2, #PLLALOCK_TIMEOUT +1: sub tmp2, tmp2, #1 + cmp tmp2, #0 beq 2f - ldr r3, [r1, #(AT91_PMC_SR - AT91_PMC)] - tst r3, #AT91_PMC_LOCKA + ldr tmp1, [pmc, #(AT91_PMC_SR - AT91_PMC)] + tst tmp1, #AT91_PMC_LOCKA beq 1b 2: .endm @@ -93,12 +98,12 @@ * Wait until PLLB has locked. */ .macro wait_pllblock - mov r4, #PLLBLOCK_TIMEOUT -1: sub r4, r4, #1 - cmp r4, #0 + mov tmp2, #PLLBLOCK_TIMEOUT +1: sub tmp2, tmp2, #1 + cmp tmp2, #0 beq 2f - ldr r3, [r1, #(AT91_PMC_SR - AT91_PMC)] - tst r3, #AT91_PMC_LOCKB + ldr tmp1, [pmc, #(AT91_PMC_SR - AT91_PMC)] + tst tmp1, #AT91_PMC_LOCKB beq 1b 2: .endm @@ -117,55 +122,55 @@ ENTRY(at91_slow_clock) * R4 = temporary register * R5 = Base address of second RAM Controller or 0 if not present */ - ldr r1, .at91_va_base_pmc - ldr r2, .at91_va_base_sdramc - ldr r5, .at91_va_base_ramc1 + ldr pmc, .at91_va_base_pmc + ldr sdramc, .at91_va_base_sdramc + ldr ramc1, .at91_va_base_ramc1 /* Drain write buffer */ - mov r0, #0 - mcr p15, 0, r0, c7, c10, 4 + mov tmp1, #0 + mcr p15, 0, tmp1, c7, c10, 4 #ifdef CONFIG_ARCH_AT91RM9200 /* Put SDRAM in self-refresh mode */ - mov r3, #1 - str r3, [r2, #AT91_SDRAMC_SRR] + mov tmp1, #1 + str tmp1, [sdramc, #AT91_SDRAMC_SRR] #elif defined(CONFIG_ARCH_AT91SAM9G45) /* prepare for DDRAM self-refresh mode */ - ldr r3, [r2, #AT91_DDRSDRC_LPR] - str r3, .saved_sam9_lpr - bic r3, #AT91_DDRSDRC_LPCB - orr r3, #AT91_DDRSDRC_LPCB_SELF_REFRESH + ldr tmp1, [sdramc, #AT91_DDRSDRC_LPR] + str tmp1, .saved_sam9_lpr + bic tmp1, #AT91_DDRSDRC_LPCB + orr tmp1, #AT91_DDRSDRC_LPCB_SELF_REFRESH /* figure out if we use the second ram controller */ - cmp r5, #0 - ldrne r4, [r5, #AT91_DDRSDRC_LPR] - strne r4, .saved_sam9_lpr1 - bicne r4, #AT91_DDRSDRC_LPCB - orrne r4, #AT91_DDRSDRC_LPCB_SELF_REFRESH + cmp ramc1, #0 + ldrne tmp2, [ramc1, #AT91_DDRSDRC_LPR] + strne tmp2, .saved_sam9_lpr1 + bicne tmp2, #AT91_DDRSDRC_LPCB + orrne tmp2, #AT91_DDRSDRC_LPCB_SELF_REFRESH /* Enable DDRAM self-refresh mode */ - str r3, [r2, #AT91_DDRSDRC_LPR] - strne r4, [r5, #AT91_DDRSDRC_LPR] + str tmp1, [sdramc, #AT91_DDRSDRC_LPR] + strne tmp2, [ramc1, #AT91_DDRSDRC_LPR] #else /* Enable SDRAM self-refresh mode */ - ldr r3, [r2, #AT91_SDRAMC_LPR] - str r3, .saved_sam9_lpr + ldr tmp1, [sdramc, #AT91_SDRAMC_LPR] + str tmp1, .saved_sam9_lpr - bic r3, #AT91_SDRAMC_LPCB - orr r3, #AT91_SDRAMC_LPCB_SELF_REFRESH - str r3, [r2, #AT91_SDRAMC_LPR] + bic tmp1, #AT91_SDRAMC_LPCB + orr tmp1, #AT91_SDRAMC_LPCB_SELF_REFRESH + str tmp1, [sdramc, #AT91_SDRAMC_LPR] #endif /* Save Master clock setting */ - ldr r3, [r1, #(AT91_PMC_MCKR - AT91_PMC)] - str r3, .saved_mckr + ldr tmp1, [pmc, #(AT91_PMC_MCKR - AT91_PMC)] + str tmp1, .saved_mckr /* * Set the Master clock source to slow clock */ - bic r3, r3, #AT91_PMC_CSS - str r3, [r1, #(AT91_PMC_MCKR - AT91_PMC)] + bic tmp1, tmp1, #AT91_PMC_CSS + str tmp1, [pmc, #(AT91_PMC_MCKR - AT91_PMC)] wait_mckrdy @@ -175,61 +180,61 @@ ENTRY(at91_slow_clock) * * See AT91RM9200 errata #27 and #28 for details. */ - mov r3, #0 - str r3, [r1, #(AT91_PMC_MCKR - AT91_PMC)] + mov tmp1, #0 + str tmp1, [pmc, #(AT91_PMC_MCKR - AT91_PMC)] wait_mckrdy #endif /* Save PLLA setting and disable it */ - ldr r3, [r1, #(AT91_CKGR_PLLAR - AT91_PMC)] - str r3, .saved_pllar + ldr tmp1, [pmc, #(AT91_CKGR_PLLAR - AT91_PMC)] + str tmp1, .saved_pllar - mov r3, #AT91_PMC_PLLCOUNT - orr r3, r3, #(1 << 29) /* bit 29 always set */ - str r3, [r1, #(AT91_CKGR_PLLAR - AT91_PMC)] + mov tmp1, #AT91_PMC_PLLCOUNT + orr tmp1, tmp1, #(1 << 29) /* bit 29 always set */ + str tmp1, [pmc, #(AT91_CKGR_PLLAR - AT91_PMC)] /* Save PLLB setting and disable it */ - ldr r3, [r1, #(AT91_CKGR_PLLBR - AT91_PMC)] - str r3, .saved_pllbr + ldr tmp1, [pmc, #(AT91_CKGR_PLLBR - AT91_PMC)] + str tmp1, .saved_pllbr - mov r3, #AT91_PMC_PLLCOUNT - str r3, [r1, #(AT91_CKGR_PLLBR - AT91_PMC)] + mov tmp1, #AT91_PMC_PLLCOUNT + str tmp1, [pmc, #(AT91_CKGR_PLLBR - AT91_PMC)] /* Turn off the main oscillator */ - ldr r3, [r1, #(AT91_CKGR_MOR - AT91_PMC)] - bic r3, r3, #AT91_PMC_MOSCEN - str r3, [r1, #(AT91_CKGR_MOR - AT91_PMC)] + ldr tmp1, [pmc, #(AT91_CKGR_MOR - AT91_PMC)] + bic tmp1, tmp1, #AT91_PMC_MOSCEN + str tmp1, [pmc, #(AT91_CKGR_MOR - AT91_PMC)] /* Wait for interrupt */ - mcr p15, 0, r0, c7, c0, 4 + mcr p15, 0, tmp1, c7, c0, 4 /* Turn on the main oscillator */ - ldr r3, [r1, #(AT91_CKGR_MOR - AT91_PMC)] - orr r3, r3, #AT91_PMC_MOSCEN - str r3, [r1, #(AT91_CKGR_MOR - AT91_PMC)] + ldr tmp1, [pmc, #(AT91_CKGR_MOR - AT91_PMC)] + orr tmp1, tmp1, #AT91_PMC_MOSCEN + str tmp1, [pmc, #(AT91_CKGR_MOR - AT91_PMC)] wait_moscrdy /* Restore PLLB setting */ - ldr r3, .saved_pllbr - str r3, [r1, #(AT91_CKGR_PLLBR - AT91_PMC)] + ldr tmp1, .saved_pllbr + str tmp1, [pmc, #(AT91_CKGR_PLLBR - AT91_PMC)] - tst r3, #(AT91_PMC_MUL & 0xff0000) + tst tmp1, #(AT91_PMC_MUL & 0xff0000) bne 1f - tst r3, #(AT91_PMC_MUL & ~0xff0000) + tst tmp1, #(AT91_PMC_MUL & ~0xff0000) beq 2f 1: wait_pllblock 2: /* Restore PLLA setting */ - ldr r3, .saved_pllar - str r3, [r1, #(AT91_CKGR_PLLAR - AT91_PMC)] + ldr tmp1, .saved_pllar + str tmp1, [pmc, #(AT91_CKGR_PLLAR - AT91_PMC)] - tst r3, #(AT91_PMC_MUL & 0xff0000) + tst tmp1, #(AT91_PMC_MUL & 0xff0000) bne 3f - tst r3, #(AT91_PMC_MUL & ~0xff0000) + tst tmp1, #(AT91_PMC_MUL & ~0xff0000) beq 4f 3: wait_pllalock @@ -242,11 +247,11 @@ ENTRY(at91_slow_clock) * * See AT91RM9200 errata #27 and #28 for details. */ - ldr r3, .saved_mckr - tst r3, #AT91_PMC_PRES + ldr tmp1, .saved_mckr + tst tmp1, #AT91_PMC_PRES beq 2f - and r3, r3, #AT91_PMC_PRES - str r3, [r1, #(AT91_PMC_MCKR - AT91_PMC)] + and tmp1, tmp1, #AT91_PMC_PRES + str tmp1, [pmc, #(AT91_PMC_MCKR - AT91_PMC)] wait_mckrdy #endif @@ -254,8 +259,8 @@ ENTRY(at91_slow_clock) /* * Restore master clock setting */ -2: ldr r3, .saved_mckr - str r3, [r1, #(AT91_PMC_MCKR - AT91_PMC)] +2: ldr tmp1, .saved_mckr + str tmp1, [pmc, #(AT91_PMC_MCKR - AT91_PMC)] wait_mckrdy @@ -263,18 +268,18 @@ ENTRY(at91_slow_clock) /* Do nothing - self-refresh is automatically disabled. */ #elif defined(CONFIG_ARCH_AT91SAM9G45) /* Restore LPR on AT91 with DDRAM */ - ldr r3, .saved_sam9_lpr - str r3, [r2, #AT91_DDRSDRC_LPR] + ldr tmp1, .saved_sam9_lpr + str tmp1, [sdramc, #AT91_DDRSDRC_LPR] /* if we use the second ram controller */ - cmp r5, #0 - ldrne r4, .saved_sam9_lpr1 - strne r4, [r5, #AT91_DDRSDRC_LPR] + cmp ramc1, #0 + ldrne tmp2, .saved_sam9_lpr1 + strne tmp2, [ramc1, #AT91_DDRSDRC_LPR] #else /* Restore LPR on AT91 with SDRAM */ - ldr r3, .saved_sam9_lpr - str r3, [r2, #AT91_SDRAMC_LPR] + ldr tmp1, .saved_sam9_lpr + str tmp1, [sdramc, #AT91_SDRAMC_LPR] #endif /* Restore registers, and return */ |