x86: Fix MMCR Access
Change sc520 MMCR Access to use memory accessor functions Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
This commit is contained in:
parent
535ad2db06
commit
64a0a4995e
5 changed files with 103 additions and 92 deletions
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@ -44,24 +44,24 @@ void init_sc520(void)
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/* Set the UARTxCTL register at it's slower,
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* baud clock giving us a 1.8432 MHz reference
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*/
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sc520_mmcr->uart1ctl = 0x07;
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sc520_mmcr->uart2ctl = 0x07;
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writeb(0x07, &sc520_mmcr->uart1ctl);
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writeb(0x07, &sc520_mmcr->uart2ctl);
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/* first set the timer pin mapping */
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sc520_mmcr->clksel = 0x72; /* no clock frequency selected, use 1.1892MHz */
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writeb(0x72, &sc520_mmcr->clksel); /* no clock frequency selected, use 1.1892MHz */
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/* enable PCI bus arbitrer */
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sc520_mmcr->sysarbctl = 0x02; /* enable concurrent mode */
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writeb(0x02, &sc520_mmcr->sysarbctl); /* enable concurrent mode */
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sc520_mmcr->sysarbmenb = 0x1f; /* enable external grants */
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sc520_mmcr->hbctl = 0x04; /* enable posted-writes */
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writeb(0x1f, &sc520_mmcr->sysarbmenb); /* enable external grants */
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writeb(0x04, &sc520_mmcr->hbctl); /* enable posted-writes */
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if (CONFIG_SYS_SC520_HIGH_SPEED) {
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sc520_mmcr->cpuctl = 0x02; /* set it to 133 MHz and write back */
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writeb(0x02, &sc520_mmcr->cpuctl); /* set it to 133 MHz and write back */
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gd->cpu_clk = 133000000;
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printf("## CPU Speed set to 133MHz\n");
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} else {
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sc520_mmcr->cpuctl = 0x01; /* set it to 100 MHz and write back */
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writeb(0x01, &sc520_mmcr->cpuctl); /* set it to 100 MHz and write back */
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printf("## CPU Speed set to 100MHz\n");
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gd->cpu_clk = 100000000;
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}
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@ -74,7 +74,7 @@ void init_sc520(void)
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"loop 0b\n": : : "ecx");
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/* turn on the SDRAM write buffer */
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sc520_mmcr->dbctl = 0x11;
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writeb(0x11, &sc520_mmcr->dbctl);
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/* turn on the cache and disable write through */
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asm("movl %%cr0, %%eax\n"
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@ -88,6 +88,7 @@ unsigned long init_sc520_dram(void)
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u32 dram_present=0;
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u32 dram_ctrl;
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#ifdef CONFIG_SYS_SDRAM_DRCTMCTL
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/* these memory control registers are set up in the assember part,
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* in sc520_asm.S, during 'mem_init'. If we muck with them here,
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@ -97,7 +98,8 @@ unsigned long init_sc520_dram(void)
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* simply dictates it.
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*/
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#else
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int val;
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u8 tmp;
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u8 val;
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int cas_precharge_delay = CONFIG_SYS_SDRAM_PRECHARGE_DELAY;
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int refresh_rate = CONFIG_SYS_SDRAM_REFRESH_RATE;
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@ -116,9 +118,10 @@ unsigned long init_sc520_dram(void)
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val = 3; /* 62.4us */
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}
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sc520_mmcr->drcctl = (sc520_mmcr->drcctl & 0xcf) | (val<<4);
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tmp = (readb(&sc520_mmcr->drcctl) & 0xcf) | (val<<4);
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writeb(tmp, &sc520_mmcr->drcctl);
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val = sc520_mmcr->drctmctl & 0xf0;
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val = readb(&sc520_mmcr->drctmctl) & 0xf0;
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if (cas_precharge_delay==3) {
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val |= 0x04; /* 3T */
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@ -133,12 +136,12 @@ unsigned long init_sc520_dram(void)
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} else {
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val |= 1;
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}
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sc520_mmcr->drctmctl = val;
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writeb(val, &c520_mmcr->drctmctl);
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#endif
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/* We read-back the configuration of the dram
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* controller that the assembly code wrote */
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dram_ctrl = sc520_mmcr->drcbendadr;
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dram_ctrl = readl(&sc520_mmcr->drcbendadr);
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bd->bi_dram[0].start = 0;
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if (dram_ctrl & 0x80) {
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@ -191,7 +194,7 @@ void reset_cpu(ulong addr)
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{
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printf("Resetting using SC520 MMCR\n");
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/* Write a '1' to the SYS_RST of the RESCFG MMCR */
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sc520_mmcr->rescfg = 0x01;
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writeb(0x01, &sc520_mmcr->rescfg);
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/* NOTREACHED */
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}
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@ -25,6 +25,7 @@
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#include <common.h>
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#include <pci.h>
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#include <asm/io.h>
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#include <asm/pci.h>
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#include <asm/ic/sc520.h>
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@ -63,6 +64,8 @@ int sc520_pci_ints[15] = {
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int pci_sc520_set_irq(int pci_pin, int irq)
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{
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int i;
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u8 tmpb;
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u16 tmpw;
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# if 1
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printf("set_irq(): map INT%c to IRQ%d\n", pci_pin + 'A', irq);
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@ -80,31 +83,34 @@ int pci_sc520_set_irq(int pci_pin, int irq)
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/* PCI interrupt mapping (A through D)*/
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for (i=0; i<=3 ;i++) {
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if (sc520_mmcr->pci_int_map[i] == sc520_irq[irq].priority)
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sc520_mmcr->pci_int_map[i] = SC520_IRQ_DISABLED;
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if (readb(&sc520_mmcr->pci_int_map[i]) == sc520_irq[irq].priority)
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writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pci_int_map[i]);
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}
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/* GP IRQ interrupt mapping */
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for (i=0; i<=10 ;i++) {
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if (sc520_mmcr->gp_int_map[i] == sc520_irq[irq].priority)
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sc520_mmcr->gp_int_map[i] = SC520_IRQ_DISABLED;
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if (readb(&sc520_mmcr->gp_int_map[i]) == sc520_irq[irq].priority)
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writeb(SC520_IRQ_DISABLED, &sc520_mmcr->gp_int_map[i]);
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}
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/* Set the trigger to level */
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sc520_mmcr->pic_mode[sc520_irq[irq].level_reg] =
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sc520_mmcr->pic_mode[sc520_irq[irq].level_reg] | sc520_irq[irq].level_bit;
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tmpb = readb(&sc520_mmcr->pic_mode[sc520_irq[irq].level_reg]);
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tmpb |= sc520_irq[irq].level_bit;
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writeb(tmpb, &sc520_mmcr->pic_mode[sc520_irq[irq].level_reg]);
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if (pci_pin < 4) {
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/* PCI INTA-INTD */
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/* route the interrupt */
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sc520_mmcr->pci_int_map[pci_pin] = sc520_irq[irq].priority;
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writeb(sc520_irq[irq].priority, &sc520_mmcr->pci_int_map[pci_pin]);
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} else {
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/* GPIRQ0-GPIRQ10 used for additional PCI INTS */
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sc520_mmcr->gp_int_map[pci_pin - 4] = sc520_irq[irq].priority;
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writeb(sc520_irq[irq].priority, &sc520_mmcr->gp_int_map[pci_pin - 4]);
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/* also set the polarity in this case */
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sc520_mmcr->intpinpol = sc520_mmcr->intpinpol | (1 << (pci_pin-4));
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tmpw = readw(&sc520_mmcr->intpinpol);
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tmpw |= (1 << (pci_pin-4));
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writew(tmpw, &sc520_mmcr->intpinpol);
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}
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/* register the pin */
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@ -24,6 +24,7 @@
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/* stuff specific for the sc520, but independent of implementation */
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#include <common.h>
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#include <asm/io.h>
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#include <asm/ic/ssi.h>
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#include <asm/ic/sc520.h>
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@ -61,34 +62,34 @@ int ssi_set_interface(int freq, int lsb_first, int inv_clock, int inv_phase)
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temp |= PHS_INV_ENB;
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}
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sc520_mmcr->ssictl = temp;
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writeb(temp, &sc520_mmcr->ssictl);
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return 0;
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}
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u8 ssi_txrx_byte(u8 data)
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{
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sc520_mmcr->ssixmit = data;
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while (sc520_mmcr->ssista & SSISTA_BSY);
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sc520_mmcr->ssicmd = SSICMD_CMD_SEL_XMITRCV;
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while (sc520_mmcr->ssista & SSISTA_BSY);
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writeb(data, &sc520_mmcr->ssixmit);
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while (readb(&sc520_mmcr->ssista) & SSISTA_BSY);
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writeb(SSICMD_CMD_SEL_XMITRCV, &sc520_mmcr->ssicmd);
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while (readb(&sc520_mmcr->ssista) & SSISTA_BSY);
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return sc520_mmcr->ssircv;
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return readb(&sc520_mmcr->ssircv);
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}
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void ssi_tx_byte(u8 data)
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{
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sc520_mmcr->ssixmit = data;
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while (sc520_mmcr->ssista & SSISTA_BSY);
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sc520_mmcr->ssicmd = SSICMD_CMD_SEL_XMIT;
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writeb(data, &sc520_mmcr->ssixmit);
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while (readb(&sc520_mmcr->ssista) & SSISTA_BSY);
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writeb(SSICMD_CMD_SEL_XMIT, &sc520_mmcr->ssicmd);
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}
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u8 ssi_rx_byte(void)
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{
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while (sc520_mmcr->ssista & SSISTA_BSY);
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sc520_mmcr->ssicmd = SSICMD_CMD_SEL_RCV;
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while (sc520_mmcr->ssista & SSISTA_BSY);
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while (readb(&sc520_mmcr->ssista) & SSISTA_BSY);
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writeb(SSICMD_CMD_SEL_RCV, &sc520_mmcr->ssicmd);
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while (readb(&sc520_mmcr->ssista) & SSISTA_BSY);
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return sc520_mmcr->ssircv;
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return readb(&sc520_mmcr->ssircv);
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}
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@ -24,13 +24,14 @@
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/* stuff specific for the sc520, but independent of implementation */
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#include <common.h>
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#include <asm/io.h>
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#include <asm/interrupt.h>
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#include <asm/ic/sc520.h>
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void sc520_timer_isr(void)
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{
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/* Ack the GP Timer Interrupt */
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sc520_mmcr->gptmrsta = 0x02;
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writeb(0x02, &sc520_mmcr->gptmrsta);
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}
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int timer_init(void)
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@ -42,28 +43,28 @@ int timer_init(void)
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irq_install_handler (0, timer_isr, NULL);
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/* Map GP Timer 1 to Master PIC IR0 */
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sc520_mmcr->gp_tmr_int_map[1] = 0x01;
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writeb(0x01, &sc520_mmcr->gp_tmr_int_map[1]);
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/* Disable GP Timers 1 & 2 - Allow configuration writes */
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sc520_mmcr->gptmr1ctl = 0x4000;
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sc520_mmcr->gptmr2ctl = 0x4000;
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writew(0x4000, &sc520_mmcr->gptmr1ctl);
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writew(0x4000, &sc520_mmcr->gptmr2ctl);
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/* Reset GP Timers 1 & 2 */
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sc520_mmcr->gptmr1cnt = 0x0000;
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sc520_mmcr->gptmr2cnt = 0x0000;
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writew(0x0000, &sc520_mmcr->gptmr1cnt);
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writew(0x0000, &sc520_mmcr->gptmr2cnt);
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/* Setup GP Timer 2 as a 100kHz (10us) prescaler */
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sc520_mmcr->gptmr2maxcmpa = 83;
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sc520_mmcr->gptmr2ctl = 0xc001;
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writew(83, &sc520_mmcr->gptmr2maxcmpa);
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writew(0xc001, &sc520_mmcr->gptmr2ctl);
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/* Setup GP Timer 1 as a 1000 Hz (1ms) interrupt generator */
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sc520_mmcr->gptmr1maxcmpa = 100;
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sc520_mmcr->gptmr1ctl = 0xe009;
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writew(100, &sc520_mmcr->gptmr1maxcmpa);
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writew(0xe009, &sc520_mmcr->gptmr1ctl);
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unmask_irq (0);
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/* Clear the GP Timer 1 status register to get the show rolling*/
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sc520_mmcr->gptmrsta = 0x02;
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writeb(0x02, &sc520_mmcr->gptmrsta);
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return 0;
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}
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@ -74,11 +75,11 @@ void __udelay(unsigned long usec)
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long u;
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long temp;
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temp = sc520_mmcr->swtmrmilli;
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temp = sc520_mmcr->swtmrmicro;
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temp = readw(&sc520_mmcr->swtmrmilli);
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temp = readw(&sc520_mmcr->swtmrmicro);
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do {
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m += sc520_mmcr->swtmrmilli;
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u = sc520_mmcr->swtmrmicro + (m * 1000);
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m += readw(&sc520_mmcr->swtmrmilli);
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u = readw(&sc520_mmcr->swtmrmicro) + (m * 1000);
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} while (u < usec);
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}
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@ -46,7 +46,7 @@ unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN;
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void init_sc520_enet (void)
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{
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/* Set CPU Speed to 100MHz */
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sc520_mmcr->cpuctl = 0x01;
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writeb(0x01, &sc520_mmcr->cpuctl);
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/* wait at least one millisecond */
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asm("movl $0x2000,%%ecx\n"
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@ -55,7 +55,7 @@ void init_sc520_enet (void)
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"loop 0b\n": : : "ecx");
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/* turn on the SDRAM write buffer */
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sc520_mmcr->dbctl = 0x11;
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writeb(0x11, &sc520_mmcr->dbctl);
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/* turn on the cache and disable write through */
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asm("movl %%cr0, %%eax\n"
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@ -70,51 +70,51 @@ int board_early_init_f(void)
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{
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init_sc520_enet();
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sc520_mmcr->gpcsrt = 0x01; /* GP Chip Select Recovery Time */
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sc520_mmcr->gpcspw = 0x07; /* GP Chip Select Pulse Width */
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sc520_mmcr->gpcsoff = 0x00; /* GP Chip Select Offset */
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sc520_mmcr->gprdw = 0x05; /* GP Read pulse width */
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sc520_mmcr->gprdoff = 0x01; /* GP Read offset */
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sc520_mmcr->gpwrw = 0x05; /* GP Write pulse width */
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sc520_mmcr->gpwroff = 0x01; /* GP Write offset */
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writeb(0x01, &sc520_mmcr->gpcsrt); /* GP Chip Select Recovery Time */
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writeb(0x07, &sc520_mmcr->gpcspw); /* GP Chip Select Pulse Width */
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writeb(0x00, &sc520_mmcr->gpcsoff); /* GP Chip Select Offset */
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writeb(0x05, &sc520_mmcr->gprdw); /* GP Read pulse width */
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writeb(0x01, &sc520_mmcr->gprdoff); /* GP Read offset */
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writeb(0x05, &sc520_mmcr->gpwrw); /* GP Write pulse width */
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writeb(0x01, &sc520_mmcr->gpwroff); /* GP Write offset */
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sc520_mmcr->piodata15_0 = 0x0630; /* PIO15_PIO0 Data */
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sc520_mmcr->piodata31_16 = 0x2000; /* PIO31_PIO16 Data */
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sc520_mmcr->piodir31_16 = 0x2000; /* GPIO Direction */
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sc520_mmcr->piodir15_0 = 0x87b5; /* GPIO Direction */
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sc520_mmcr->piopfs31_16 = 0x0dfe; /* GPIO pin function 31-16 reg */
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sc520_mmcr->piopfs15_0 = 0x200a; /* GPIO pin function 15-0 reg */
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sc520_mmcr->cspfs = 0x00f8; /* Chip Select Pin Function Select */
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writew(0x0630, &sc520_mmcr->piodata15_0); /* PIO15_PIO0 Data */
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writew(0x2000, &sc520_mmcr->piodata31_16); /* PIO31_PIO16 Data */
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writew(0x2000, &sc520_mmcr->piodir31_16); /* GPIO Direction */
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writew(0x87b5, &sc520_mmcr->piodir15_0); /* GPIO Direction */
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writew(0x0dfe, &sc520_mmcr->piopfs31_16); /* GPIO pin function 31-16 reg */
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writew(0x200a, &sc520_mmcr->piopfs15_0); /* GPIO pin function 15-0 reg */
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writeb(0xf8, &sc520_mmcr->cspfs); /* Chip Select Pin Function Select */
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sc520_mmcr->par[2] = 0x200713f8; /* Uart A (GPCS0, 0x013f8, 8 Bytes) */
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sc520_mmcr->par[3] = 0x2c0712f8; /* Uart B (GPCS3, 0x012f8, 8 Bytes) */
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sc520_mmcr->par[4] = 0x300711f8; /* Uart C (GPCS4, 0x011f8, 8 Bytes) */
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sc520_mmcr->par[5] = 0x340710f8; /* Uart D (GPCS5, 0x010f8, 8 Bytes) */
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sc520_mmcr->par[6] = 0xe3ffc000; /* SDRAM (0x00000000, 128MB) */
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sc520_mmcr->par[7] = 0xaa3fd000; /* StrataFlash (ROMCS1, 0x10000000, 16MB) */
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sc520_mmcr->par[8] = 0xca3fd100; /* StrataFlash (ROMCS2, 0x11000000, 16MB) */
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sc520_mmcr->par[9] = 0x4203d900; /* SRAM (GPCS0, 0x19000000, 1MB) */
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sc520_mmcr->par[10] = 0x4e03d910; /* SRAM (GPCS3, 0x19100000, 1MB) */
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sc520_mmcr->par[11] = 0x50018100; /* DP-RAM (GPCS4, 0x18100000, 4kB) */
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sc520_mmcr->par[12] = 0x54020000; /* CFLASH1 (0x200000000, 4kB) */
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sc520_mmcr->par[13] = 0x5c020001; /* CFLASH2 (0x200010000, 4kB) */
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/* sc520_mmcr->par14 = 0x8bfff800; */ /* BOOTCS at 0x18000000 */
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/* sc520_mmcr->par15 = 0x38201000; */ /* LEDs etc (GPCS6, 0x1000, 20 Bytes */
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writel(0x200713f8, &sc520_mmcr->par[2]); /* Uart A (GPCS0, 0x013f8, 8 Bytes) */
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writel(0x2c0712f8, &sc520_mmcr->par[3]); /* Uart B (GPCS3, 0x012f8, 8 Bytes) */
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writel(0x300711f8, &sc520_mmcr->par[4]); /* Uart C (GPCS4, 0x011f8, 8 Bytes) */
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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;
|
||||
writew(0x0033, &sc520_mmcr->bootcsctl);
|
||||
writew(0x0615, &sc520_mmcr->romcs1ctl);
|
||||
writew(0x0615, &sc520_mmcr->romcs2ctl);
|
||||
|
||||
sc520_mmcr->adddecctl = 0x02;
|
||||
sc520_mmcr->uart1ctl = 0x07;
|
||||
sc520_mmcr->sysarbctl = 0x06;
|
||||
sc520_mmcr->sysarbmenb = 0x0003;
|
||||
writeb(0x02, &sc520_mmcr->adddecctl);
|
||||
writeb(0x07, &sc520_mmcr->uart1ctl);
|
||||
writeb(0x06, &sc520_mmcr->sysarbctl);
|
||||
writew(0x0003, &sc520_mmcr->sysarbmenb);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue