Change sc520 MMCR Access to use memory accessor functions
Signed-off-by: Graeme Russ graeme.russ@gmail.com --- arch/i386/cpu/sc520/sc520.c | 33 ++++++++------ arch/i386/cpu/sc520/sc520_pci.c | 24 ++++++---- arch/i386/cpu/sc520/sc520_ssi.c | 27 ++++++------ arch/i386/cpu/sc520/sc520_timer.c | 31 +++++++------ board/eNET/eNET.c | 86 ++++++++++++++++++------------------ 5 files changed, 106 insertions(+), 95 deletions(-)
diff --git a/arch/i386/cpu/sc520/sc520.c b/arch/i386/cpu/sc520/sc520.c index 4b566a7..519bfd8 100644 --- a/arch/i386/cpu/sc520/sc520.c +++ b/arch/i386/cpu/sc520/sc520.c @@ -44,24 +44,24 @@ void init_sc520(void) /* Set the UARTxCTL register at it's slower, * baud clock giving us a 1.8432 MHz reference */ - sc520_mmcr->uart1ctl = 0x07; - sc520_mmcr->uart2ctl = 0x07; + writeb(0x07, &sc520_mmcr->uart1ctl); + writeb(0x07, &sc520_mmcr->uart2ctl);
/* first set the timer pin mapping */ - sc520_mmcr->clksel = 0x72; /* no clock frequency selected, use 1.1892MHz */ + writeb(0x72, &sc520_mmcr->clksel); /* no clock frequency selected, use 1.1892MHz */
/* enable PCI bus arbitrer */ - sc520_mmcr->sysarbctl = 0x02; /* enable concurrent mode */ + writeb(0x02, &sc520_mmcr->sysarbctl); /* enable concurrent mode */
- sc520_mmcr->sysarbmenb = 0x1f; /* enable external grants */ - sc520_mmcr->hbctl = 0x04; /* enable posted-writes */ + writeb(0x1f, &sc520_mmcr->sysarbmenb); /* enable external grants */ + writeb(0x04, &sc520_mmcr->hbctl); /* enable posted-writes */
if (CONFIG_SYS_SC520_HIGH_SPEED) { - sc520_mmcr->cpuctl = 0x02; /* set it to 133 MHz and write back */ + writeb(0x02, &sc520_mmcr->cpuctl); /* set it to 133 MHz and write back */ gd->cpu_clk = 133000000; printf("## CPU Speed set to 133MHz\n"); } else { - sc520_mmcr->cpuctl = 0x01; /* set it to 100 MHz and write back */ + writeb(0x01, &sc520_mmcr->cpuctl); /* set it to 100 MHz and write back */ printf("## CPU Speed set to 100MHz\n"); gd->cpu_clk = 100000000; } @@ -74,7 +74,7 @@ void init_sc520(void) "loop 0b\n": : : "ecx");
/* turn on the SDRAM write buffer */ - sc520_mmcr->dbctl = 0x11; + writeb(0x11, &sc520_mmcr->dbctl);
/* turn on the cache and disable write through */ asm("movl %%cr0, %%eax\n" @@ -88,6 +88,7 @@ unsigned long init_sc520_dram(void)
u32 dram_present=0; u32 dram_ctrl; + #ifdef CONFIG_SYS_SDRAM_DRCTMCTL /* these memory control registers are set up in the assember part, * in sc520_asm.S, during 'mem_init'. If we muck with them here, @@ -97,7 +98,8 @@ unsigned long init_sc520_dram(void) * simply dictates it. */ #else - int val; + u8 tmp; + u8 val;
int cas_precharge_delay = CONFIG_SYS_SDRAM_PRECHARGE_DELAY; int refresh_rate = CONFIG_SYS_SDRAM_REFRESH_RATE; @@ -116,9 +118,10 @@ unsigned long init_sc520_dram(void) val = 3; /* 62.4us */ }
- sc520_mmcr->drcctl = (sc520_mmcr->drcctl & 0xcf) | (val<<4); + tmp = (readb(&sc520_mmcr->drcctl) & 0xcf) | (val<<4); + writeb(tmp, &sc520_mmcr->drcctl);
- val = sc520_mmcr->drctmctl & 0xf0; + val = readb(&sc520_mmcr->drctmctl) & 0xf0;
if (cas_precharge_delay==3) { val |= 0x04; /* 3T */ @@ -133,12 +136,12 @@ unsigned long init_sc520_dram(void) } else { val |= 1; } - sc520_mmcr->drctmctl = val; + writeb(val, &c520_mmcr->drctmctl); #endif
/* We read-back the configuration of the dram * controller that the assembly code wrote */ - dram_ctrl = sc520_mmcr->drcbendadr; + dram_ctrl = readl(&sc520_mmcr->drcbendadr);
bd->bi_dram[0].start = 0; if (dram_ctrl & 0x80) { @@ -191,7 +194,7 @@ void reset_cpu(ulong addr) { printf("Resetting using SC520 MMCR\n"); /* Write a '1' to the SYS_RST of the RESCFG MMCR */ - sc520_mmcr->rescfg = 0x01; + writeb(0x01, &sc520_mmcr->rescfg);
/* NOTREACHED */ } diff --git a/arch/i386/cpu/sc520/sc520_pci.c b/arch/i386/cpu/sc520/sc520_pci.c index f446c6d..ee7e720 100644 --- a/arch/i386/cpu/sc520/sc520_pci.c +++ b/arch/i386/cpu/sc520/sc520_pci.c @@ -25,6 +25,7 @@
#include <common.h> #include <pci.h> +#include <asm/io.h> #include <asm/pci.h> #include <asm/ic/sc520.h>
@@ -63,6 +64,8 @@ int sc520_pci_ints[15] = { int pci_sc520_set_irq(int pci_pin, int irq) { int i; + u8 tmpb; + u16 tmpw;
# if 1 printf("set_irq(): map INT%c to IRQ%d\n", pci_pin + 'A', irq); @@ -80,31 +83,34 @@ int pci_sc520_set_irq(int pci_pin, int irq)
/* PCI interrupt mapping (A through D)*/ for (i=0; i<=3 ;i++) { - if (sc520_mmcr->pci_int_map[i] == sc520_irq[irq].priority) - sc520_mmcr->pci_int_map[i] = SC520_IRQ_DISABLED; + if (readb(&sc520_mmcr->pci_int_map[i]) == sc520_irq[irq].priority) + writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pci_int_map[i]); }
/* GP IRQ interrupt mapping */ for (i=0; i<=10 ;i++) { - if (sc520_mmcr->gp_int_map[i] == sc520_irq[irq].priority) - sc520_mmcr->gp_int_map[i] = SC520_IRQ_DISABLED; + if (readb(&sc520_mmcr->gp_int_map[i]) == sc520_irq[irq].priority) + writeb(SC520_IRQ_DISABLED, &sc520_mmcr->gp_int_map[i]); }
/* Set the trigger to level */ - sc520_mmcr->pic_mode[sc520_irq[irq].level_reg] = - sc520_mmcr->pic_mode[sc520_irq[irq].level_reg] | sc520_irq[irq].level_bit; + tmpb = readb(&sc520_mmcr->pic_mode[sc520_irq[irq].level_reg]); + tmpb |= sc520_irq[irq].level_bit; + writeb(tmpb, &sc520_mmcr->pic_mode[sc520_irq[irq].level_reg]);
if (pci_pin < 4) { /* PCI INTA-INTD */ /* route the interrupt */ - sc520_mmcr->pci_int_map[pci_pin] = sc520_irq[irq].priority; + writeb(sc520_irq[irq].priority, &sc520_mmcr->pci_int_map[pci_pin]); } else { /* GPIRQ0-GPIRQ10 used for additional PCI INTS */ - sc520_mmcr->gp_int_map[pci_pin - 4] = sc520_irq[irq].priority; + writeb(sc520_irq[irq].priority, &sc520_mmcr->gp_int_map[pci_pin - 4]);
/* also set the polarity in this case */ - sc520_mmcr->intpinpol = sc520_mmcr->intpinpol | (1 << (pci_pin-4)); + tmpw = readw(&sc520_mmcr->intpinpol); + tmpw |= (1 << (pci_pin-4)); + writew(tmpw, &sc520_mmcr->intpinpol); }
/* register the pin */ diff --git a/arch/i386/cpu/sc520/sc520_ssi.c b/arch/i386/cpu/sc520/sc520_ssi.c index 8dbe17a..6e5e346 100644 --- a/arch/i386/cpu/sc520/sc520_ssi.c +++ b/arch/i386/cpu/sc520/sc520_ssi.c @@ -24,6 +24,7 @@ /* stuff specific for the sc520, but independent of implementation */
#include <common.h> +#include <asm/io.h> #include <asm/ic/ssi.h> #include <asm/ic/sc520.h>
@@ -61,34 +62,34 @@ int ssi_set_interface(int freq, int lsb_first, int inv_clock, int inv_phase) temp |= PHS_INV_ENB; }
- sc520_mmcr->ssictl = temp; + writeb(temp, &sc520_mmcr->ssictl);
return 0; }
u8 ssi_txrx_byte(u8 data) { - sc520_mmcr->ssixmit = data; - while (sc520_mmcr->ssista & SSISTA_BSY); - sc520_mmcr->ssicmd = SSICMD_CMD_SEL_XMITRCV; - while (sc520_mmcr->ssista & SSISTA_BSY); + writeb(data, &sc520_mmcr->ssixmit); + while (readb(&sc520_mmcr->ssista) & SSISTA_BSY); + writeb(SSICMD_CMD_SEL_XMITRCV, &sc520_mmcr->ssicmd); + while (readb(&sc520_mmcr->ssista) & SSISTA_BSY);
- return sc520_mmcr->ssircv; + return readb(&sc520_mmcr->ssircv); }
void ssi_tx_byte(u8 data) { - sc520_mmcr->ssixmit = data; - while (sc520_mmcr->ssista & SSISTA_BSY); - sc520_mmcr->ssicmd = SSICMD_CMD_SEL_XMIT; + writeb(data, &sc520_mmcr->ssixmit); + while (readb(&sc520_mmcr->ssista) & SSISTA_BSY); + writeb(SSICMD_CMD_SEL_XMIT, &sc520_mmcr->ssicmd); }
u8 ssi_rx_byte(void) { - while (sc520_mmcr->ssista & SSISTA_BSY); - sc520_mmcr->ssicmd = SSICMD_CMD_SEL_RCV; - while (sc520_mmcr->ssista & SSISTA_BSY); + while (readb(&sc520_mmcr->ssista) & SSISTA_BSY); + writeb(SSICMD_CMD_SEL_RCV, &sc520_mmcr->ssicmd); + while (readb(&sc520_mmcr->ssista) & SSISTA_BSY);
- return sc520_mmcr->ssircv; + return readb(&sc520_mmcr->ssircv); } diff --git a/arch/i386/cpu/sc520/sc520_timer.c b/arch/i386/cpu/sc520/sc520_timer.c index 93b5b55..eca48e0 100644 --- a/arch/i386/cpu/sc520/sc520_timer.c +++ b/arch/i386/cpu/sc520/sc520_timer.c @@ -24,13 +24,14 @@ /* stuff specific for the sc520, but independent of implementation */
#include <common.h> +#include <asm/io.h> #include <asm/interrupt.h> #include <asm/ic/sc520.h>
void sc520_timer_isr(void) { /* Ack the GP Timer Interrupt */ - sc520_mmcr->gptmrsta = 0x02; + writeb(0x02, &sc520_mmcr->gptmrsta); }
int timer_init(void) @@ -42,28 +43,28 @@ int timer_init(void) irq_install_handler (0, timer_isr, NULL);
/* Map GP Timer 1 to Master PIC IR0 */ - sc520_mmcr->gp_tmr_int_map[1] = 0x01; + writeb(0x01, &sc520_mmcr->gp_tmr_int_map[1]);
/* Disable GP Timers 1 & 2 - Allow configuration writes */ - sc520_mmcr->gptmr1ctl = 0x4000; - sc520_mmcr->gptmr2ctl = 0x4000; + writew(0x4000, &sc520_mmcr->gptmr1ctl); + writew(0x4000, &sc520_mmcr->gptmr2ctl);
/* Reset GP Timers 1 & 2 */ - sc520_mmcr->gptmr1cnt = 0x0000; - sc520_mmcr->gptmr2cnt = 0x0000; + writew(0x0000, &sc520_mmcr->gptmr1cnt); + writew(0x0000, &sc520_mmcr->gptmr2cnt);
/* Setup GP Timer 2 as a 100kHz (10us) prescaler */ - sc520_mmcr->gptmr2maxcmpa = 83; - sc520_mmcr->gptmr2ctl = 0xc001; + writew(83, &sc520_mmcr->gptmr2maxcmpa); + writew(0xc001, &sc520_mmcr->gptmr2ctl);
/* Setup GP Timer 1 as a 1000 Hz (1ms) interrupt generator */ - sc520_mmcr->gptmr1maxcmpa = 100; - sc520_mmcr->gptmr1ctl = 0xe009; + writew(100, &sc520_mmcr->gptmr1maxcmpa); + writew(0xe009, &sc520_mmcr->gptmr1ctl);
unmask_irq (0);
/* Clear the GP Timer 1 status register to get the show rolling*/ - sc520_mmcr->gptmrsta = 0x02; + writeb(0x02, &sc520_mmcr->gptmrsta);
return 0; } @@ -74,11 +75,11 @@ void __udelay(unsigned long usec) long u; long temp;
- temp = sc520_mmcr->swtmrmilli; - temp = sc520_mmcr->swtmrmicro; + temp = readw(&sc520_mmcr->swtmrmilli); + temp = readw(&sc520_mmcr->swtmrmicro);
do { - m += sc520_mmcr->swtmrmilli; - u = sc520_mmcr->swtmrmicro + (m * 1000); + m += readw(&sc520_mmcr->swtmrmilli); + u = readw(&sc520_mmcr->swtmrmicro) + (m * 1000); } while (u < usec); } diff --git a/board/eNET/eNET.c b/board/eNET/eNET.c index 6d0b15a..f794beb 100644 --- a/board/eNET/eNET.c +++ b/board/eNET/eNET.c @@ -46,7 +46,7 @@ unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN; void init_sc520_enet (void) { /* Set CPU Speed to 100MHz */ - sc520_mmcr->cpuctl = 0x01; + writeb(0x01, &sc520_mmcr->cpuctl);
/* wait at least one millisecond */ asm("movl $0x2000,%%ecx\n" @@ -55,7 +55,7 @@ void init_sc520_enet (void) "loop 0b\n": : : "ecx");
/* turn on the SDRAM write buffer */ - sc520_mmcr->dbctl = 0x11; + writeb(0x11, &sc520_mmcr->dbctl);
/* turn on the cache and disable write through */ asm("movl %%cr0, %%eax\n" @@ -70,51 +70,51 @@ int board_early_init_f(void) { init_sc520_enet();
- sc520_mmcr->gpcsrt = 0x01; /* GP Chip Select Recovery Time */ - sc520_mmcr->gpcspw = 0x07; /* GP Chip Select Pulse Width */ - sc520_mmcr->gpcsoff = 0x00; /* GP Chip Select Offset */ - sc520_mmcr->gprdw = 0x05; /* GP Read pulse width */ - sc520_mmcr->gprdoff = 0x01; /* GP Read offset */ - sc520_mmcr->gpwrw = 0x05; /* GP Write pulse width */ - sc520_mmcr->gpwroff = 0x01; /* GP Write offset */ - - sc520_mmcr->piodata15_0 = 0x0630; /* PIO15_PIO0 Data */ - sc520_mmcr->piodata31_16 = 0x2000; /* PIO31_PIO16 Data */ - sc520_mmcr->piodir31_16 = 0x2000; /* GPIO Direction */ - sc520_mmcr->piodir15_0 = 0x87b5; /* GPIO Direction */ - sc520_mmcr->piopfs31_16 = 0x0dfe; /* GPIO pin function 31-16 reg */ - sc520_mmcr->piopfs15_0 = 0x200a; /* GPIO pin function 15-0 reg */ - sc520_mmcr->cspfs = 0x00f8; /* Chip Select Pin Function Select */ - - sc520_mmcr->par[2] = 0x200713f8; /* Uart A (GPCS0, 0x013f8, 8 Bytes) */ - sc520_mmcr->par[3] = 0x2c0712f8; /* Uart B (GPCS3, 0x012f8, 8 Bytes) */ - sc520_mmcr->par[4] = 0x300711f8; /* Uart C (GPCS4, 0x011f8, 8 Bytes) */ - sc520_mmcr->par[5] = 0x340710f8; /* Uart D (GPCS5, 0x010f8, 8 Bytes) */ - sc520_mmcr->par[6] = 0xe3ffc000; /* SDRAM (0x00000000, 128MB) */ - sc520_mmcr->par[7] = 0xaa3fd000; /* StrataFlash (ROMCS1, 0x10000000, 16MB) */ - sc520_mmcr->par[8] = 0xca3fd100; /* StrataFlash (ROMCS2, 0x11000000, 16MB) */ - sc520_mmcr->par[9] = 0x4203d900; /* SRAM (GPCS0, 0x19000000, 1MB) */ - sc520_mmcr->par[10] = 0x4e03d910; /* SRAM (GPCS3, 0x19100000, 1MB) */ - sc520_mmcr->par[11] = 0x50018100; /* DP-RAM (GPCS4, 0x18100000, 4kB) */ - sc520_mmcr->par[12] = 0x54020000; /* CFLASH1 (0x200000000, 4kB) */ - sc520_mmcr->par[13] = 0x5c020001; /* CFLASH2 (0x200010000, 4kB) */ -/* sc520_mmcr->par14 = 0x8bfff800; */ /* BOOTCS at 0x18000000 */ -/* sc520_mmcr->par15 = 0x38201000; */ /* LEDs etc (GPCS6, 0x1000, 20 Bytes */ + writeb(0x01, &sc520_mmcr->gpcsrt); /* GP Chip Select Recovery Time */ + writeb(0x07, &sc520_mmcr->gpcspw); /* GP Chip Select Pulse Width */ + writeb(0x00, &sc520_mmcr->gpcsoff); /* GP Chip Select Offset */ + writeb(0x05, &sc520_mmcr->gprdw); /* GP Read pulse width */ + writeb(0x01, &sc520_mmcr->gprdoff); /* GP Read offset */ + writeb(0x05, &sc520_mmcr->gpwrw); /* GP Write pulse width */ + writeb(0x01, &sc520_mmcr->gpwroff); /* GP Write offset */ + + writew(0x0630, &sc520_mmcr->piodata15_0); /* PIO15_PIO0 Data */ + writew(0x2000, &sc520_mmcr->piodata31_16); /* PIO31_PIO16 Data */ + writew(0x2000, &sc520_mmcr->piodir31_16); /* GPIO Direction */ + writew(0x87b5, &sc520_mmcr->piodir15_0); /* GPIO Direction */ + writew(0x0dfe, &sc520_mmcr->piopfs31_16); /* GPIO pin function 31-16 reg */ + writew(0x200a, &sc520_mmcr->piopfs15_0); /* GPIO pin function 15-0 reg */ + writeb(0xf8, &sc520_mmcr->cspfs); /* Chip Select Pin Function Select */ + + writel(0x200713f8, &sc520_mmcr->par[2]); /* Uart A (GPCS0, 0x013f8, 8 Bytes) */ + writel(0x2c0712f8, &sc520_mmcr->par[3]); /* Uart B (GPCS3, 0x012f8, 8 Bytes) */ + writel(0x300711f8, &sc520_mmcr->par[4]); /* Uart C (GPCS4, 0x011f8, 8 Bytes) */ + writel(0x340710f8, &sc520_mmcr->par[5]); /* Uart D (GPCS5, 0x010f8, 8 Bytes) */ + writel(0xe3ffc000, &sc520_mmcr->par[6]); /* SDRAM (0x00000000, 128MB) */ + writel(0xaa3fd000, &sc520_mmcr->par[7]); /* StrataFlash (ROMCS1, 0x10000000, 16MB) */ + writel(0xca3fd100, &sc520_mmcr->par[8]); /* StrataFlash (ROMCS2, 0x11000000, 16MB) */ + writel(0x4203d900, &sc520_mmcr->par[9]); /* SRAM (GPCS0, 0x19000000, 1MB) */ + writel(0x4e03d910, &sc520_mmcr->par[10]); /* SRAM (GPCS3, 0x19100000, 1MB) */ + writel(0x50018100, &sc520_mmcr->par[11]); /* DP-RAM (GPCS4, 0x18100000, 4kB) */ + writel(0x54020000, &sc520_mmcr->par[12]); /* CFLASH1 (0x200000000, 4kB) */ + writel(0x5c020001, &sc520_mmcr->par[13]); /* CFLASH2 (0x200010000, 4kB) */ +/* writel(0x8bfff800, &sc520_mmcr->par14); */ /* BOOTCS at 0x18000000 */ +/* writel(0x38201000, &sc520_mmcr->par15); */ /* LEDs etc (GPCS6, 0x1000, 20 Bytes */
/* Disable Watchdog */ - sc520_mmcr->wdtmrctl = 0x3333; - sc520_mmcr->wdtmrctl = 0xcccc; - sc520_mmcr->wdtmrctl = 0x0000; + writew(0x3333, &sc520_mmcr->wdtmrctl); + writew(0xcccc, &sc520_mmcr->wdtmrctl); + writew(0x0000, &sc520_mmcr->wdtmrctl);
/* Chip Select Configuration */ - sc520_mmcr->bootcsctl = 0x0033; - sc520_mmcr->romcs1ctl = 0x0615; - sc520_mmcr->romcs2ctl = 0x0615; - - sc520_mmcr->adddecctl = 0x02; - sc520_mmcr->uart1ctl = 0x07; - sc520_mmcr->sysarbctl = 0x06; - sc520_mmcr->sysarbmenb = 0x0003; + writew(0x0033, &sc520_mmcr->bootcsctl); + writew(0x0615, &sc520_mmcr->romcs1ctl); + writew(0x0615, &sc520_mmcr->romcs2ctl); + + writeb(0x02, &sc520_mmcr->adddecctl); + writeb(0x07, &sc520_mmcr->uart1ctl); + writeb(0x06, &sc520_mmcr->sysarbctl); + writew(0x0003, &sc520_mmcr->sysarbmenb);
return 0; }