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Coldfire targets: enable buffered writes by default. Speeds up all sorts of I/O that writes to ports: LCD update (except the functions using DMA on H300), ATA writes, .... Some timings had to be adjusted for the new configuration.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15129 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2007-10-15 21:16:50 +00:00
parent c08c081211
commit b85b6be3aa
7 changed files with 16 additions and 16 deletions
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4
firmware/target/coldfire/crt0.S
View file

@ -218,8 +218,8 @@ start:
move.l #0x01000000,%d0
movec.l %d0,%cacr
/* Enable cache, default=non-cacheable,no buffered writes */
move.l #0x80000000,%d0
/* Enable cache, default=non-cacheable, buffered writes */
move.l #0x80000100,%d0
movec.l %d0,%cacr
/* Cache enabled in SDRAM only, buffered writes enabled */

6
firmware/target/coldfire/iaudio/m5/lcd-as-m5.S
View file

@ -70,13 +70,13 @@ lcd_write_data:
lea 0xf0008002, %a1
.loop:
/* When running in IRAM, this loop takes 7 cycles plus the LCD write.
The 7 cycles are necessary to follow the LCD timing specs
/* When running in IRAM, this loop takes 10 cycles plus the LCD write.
The 10 cycles are necessary to follow the LCD timing specs
at 140MHz */
nop /* 3(0/0) */
move.b (%a0)+, %d1 /* 3(1/0) */
move.w %d1, (%a1) /* 1(0/1) */
subq.l #1, %d0 /* 1(0/0) */
nop /* 1(0/0) */
bne .loop /* 2(0/0) */
rts
.wd_end:

2
firmware/target/coldfire/iaudio/system-iaudio.c
View file

@ -71,7 +71,7 @@ void cf_set_cpu_frequency(long frequency)
RECALC_DELAYS(CPUFREQ_MAX);
PLLCR = 0x0102c049 | (PLLCR & 0x70C00000);
CSCR0 = 0x00001180; /* Flash: 4 wait states */
CSCR1 = 0x00000980; /* LCD: 2 wait states */
CSCR1 = 0x00001180; /* LCD: 4 wait states */
while(!(PLLCR & 0x80000000)) {}; /* Wait until the PLL has locked.
This may take up to 10ms! */
timers_adjust_prescale(CPUFREQ_MAX_MULT, true);

2
firmware/target/coldfire/iriver/h100/adc-h100.c
View file

@ -37,7 +37,7 @@
({ \
int _x_; \
asm volatile ( \
"move.l #11, %[_x_] \r\n" \
"move.l #13, %[_x_] \r\n" \
"1: \r\n" \
"subq.l #1, %[_x_] \r\n" \
"bhi.b 1b \r\n" \

6
firmware/target/coldfire/iriver/h100/lcd-as-h100.S
View file

@ -83,13 +83,13 @@ lcd_write_data:
lea 0xf0000000,%a1
.loop:
/* When running in IRAM, this loop takes 7 cycles plus the LCD write.
The 7 cycles are necessary to follow the LCD timing specs
/* When running in IRAM, this loop takes 10 cycles plus the LCD write.
The 10 cycles are necessary to follow the LCD timing specs
at 140MHz */
nop /* 3(0/0) */
move.b (%a0)+,%d1 /* 3(1/0) */
move.w %d1,(%a1) /* 1(0/1) */
subq.l #1,%d0 /* 1(0/0) */
nop /* 1(0/0) */
bne .loop /* 2(0/0) */
rts
.wd_end:

2
firmware/target/coldfire/pcf50606-coldfire.c
View file

@ -81,7 +81,7 @@ static int i2c_delay IDATA_ATTR = 44;
void pcf50606_i2c_recalc_delay(int cpu_clock)
{
i2c_delay = MAX(cpu_clock / (400000*2*3) - 7, 1);
i2c_delay = MAX(cpu_clock / (400000*2*3) - 5, 1);
}
inline void pcf50606_i2c_start(void)

2
firmware/target/coldfire/system-target.h
View file

@ -155,7 +155,7 @@ static inline void invalidate_icache(void)
{
asm volatile ("move.l #0x01000000,%d0\n"
"movec.l %d0,%cacr\n"
"move.l #0x80000000,%d0\n"
"move.l #0x80000100,%d0\n"
"movec.l %d0,%cacr");
}