#include <common.h>
#include <asm/io.h>
-#include <asm/ic/sc520.h>
+#include <asm/arch/sc520.h>
#include <net.h>
#include <netdev.h>
DECLARE_GLOBAL_DATA_PTR;
-#undef SC520_CDP_DEBUG
-
-#ifdef SC520_CDP_DEBUG
-#define PRINTF(fmt,args...) printf (fmt ,##args)
-#else
-#define PRINTF(fmt,args...)
-#endif
-
unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN;
-void init_sc520_enet (void)
-{
- /* Set CPU Speed to 100MHz */
- writeb(0x01, &sc520_mmcr->cpuctl);
-
- /* wait at least one millisecond */
- asm("movl $0x2000,%%ecx\n"
- "0: pushl %%ecx\n"
- "popl %%ecx\n"
- "loop 0b\n": : : "ecx");
-
- /* turn on the SDRAM write buffer */
- writeb(0x11, &sc520_mmcr->dbctl);
-
- /* turn on the cache and disable write through */
- asm("movl %%cr0, %%eax\n"
- "andl $0x9fffffff, %%eax\n"
- "movl %%eax, %%cr0\n" : : : "eax");
-}
+static void enet_timer_isr(void);
+static void enet_toggle_run_led(void);
+static void enet_setup_pars(void);
/*
* Miscellaneous platform dependent initializations
*/
int board_early_init_f(void)
{
- init_sc520_enet();
-
- 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 */
+ u16 pio_out_cfg = 0x0000;
+
+ /* Configure General Purpose Bus timing */
+ writeb(CONFIG_SYS_SC520_GPCSRT, &sc520_mmcr->gpcsrt);
+ writeb(CONFIG_SYS_SC520_GPCSPW, &sc520_mmcr->gpcspw);
+ writeb(CONFIG_SYS_SC520_GPCSOFF, &sc520_mmcr->gpcsoff);
+ writeb(CONFIG_SYS_SC520_GPRDW, &sc520_mmcr->gprdw);
+ writeb(CONFIG_SYS_SC520_GPRDOFF, &sc520_mmcr->gprdoff);
+ writeb(CONFIG_SYS_SC520_GPWRW, &sc520_mmcr->gpwrw);
+ writeb(CONFIG_SYS_SC520_GPWROFF, &sc520_mmcr->gpwroff);
+
+ /* Configure Programmable Input/Output Pins */
+ writew(CONFIG_SYS_SC520_PIODIR15_0, &sc520_mmcr->piodir15_0);
+ writew(CONFIG_SYS_SC520_PIODIR31_16, &sc520_mmcr->piodir31_16);
+ writew(CONFIG_SYS_SC520_PIOPFS31_16, &sc520_mmcr->piopfs31_16);
+ writew(CONFIG_SYS_SC520_PIOPFS15_0, &sc520_mmcr->piopfs15_0);
+ writeb(CONFIG_SYS_SC520_CSPFS, &sc520_mmcr->cspfs);
+ writeb(CONFIG_SYS_SC520_CLKSEL, &sc520_mmcr->clksel);
+
+ /*
+ * Turn off top board
+ * Set StrataFlash chips to 16-bit width
+ * Set StrataFlash chips to normal (non reset/power down) mode
+ */
+ pio_out_cfg |= CONFIG_SYS_ENET_TOP_BRD_PWR;
+ pio_out_cfg |= CONFIG_SYS_ENET_SF_WIDTH;
+ pio_out_cfg |= CONFIG_SYS_ENET_SF1_MODE;
+ pio_out_cfg |= CONFIG_SYS_ENET_SF2_MODE;
+ writew(pio_out_cfg, &sc520_mmcr->pioset15_0);
+
+ /* Turn off auxiliary power output */
+ writew(CONFIG_SYS_ENET_AUX_PWR, &sc520_mmcr->pioclr15_0);
+
+ /* Clear FPGA program mode */
+ writew(CONFIG_SYS_ENET_FPGA_PROG, &sc520_mmcr->pioset31_16);
+
+ enet_setup_pars();
/* Disable Watchdog */
writew(0x3333, &sc520_mmcr->wdtmrctl);
writew(0x0000, &sc520_mmcr->wdtmrctl);
/* Chip Select Configuration */
- writew(0x0033, &sc520_mmcr->bootcsctl);
- writew(0x0615, &sc520_mmcr->romcs1ctl);
- writew(0x0615, &sc520_mmcr->romcs2ctl);
+ writew(CONFIG_SYS_SC520_BOOTCS_CTRL, &sc520_mmcr->bootcsctl);
+ writew(CONFIG_SYS_SC520_ROMCS1_CTRL, &sc520_mmcr->romcs1ctl);
+ writew(CONFIG_SYS_SC520_ROMCS2_CTRL, &sc520_mmcr->romcs2ctl);
+
+ writeb(CONFIG_SYS_SC520_ADDDECCTL, &sc520_mmcr->adddecctl);
+ writeb(CONFIG_SYS_SC520_UART1CTL, &sc520_mmcr->uart1ctl);
+ writeb(CONFIG_SYS_SC520_UART2CTL, &sc520_mmcr->uart2ctl);
+
+ writeb(CONFIG_SYS_SC520_SYSARBCTL, &sc520_mmcr->sysarbctl);
+ writew(CONFIG_SYS_SC520_SYSARBMENB, &sc520_mmcr->sysarbmenb);
- writeb(0x00, &sc520_mmcr->adddecctl);
- writeb(0x07, &sc520_mmcr->uart1ctl);
- writeb(0x07, &sc520_mmcr->uart2ctl);
- writeb(0x06, &sc520_mmcr->sysarbctl);
- writew(0x0003, &sc520_mmcr->sysarbmenb);
+ /* enable posted-writes */
+ writeb(CONFIG_SYS_SC520_HBCTL, &sc520_mmcr->hbctl);
return 0;
}
+static void enet_setup_pars(void)
+{
+ /*
+ * PARs 11 and 12 are 2MB SRAM @ 0x19000000
+ *
+ * These are setup now because older version of U-Boot have them
+ * mapped to a different PAR which gets clobbered which prevents
+ * using SRAM for warm-booting a new image
+ */
+ writel(CONFIG_SYS_SC520_SRAM1_PAR, &sc520_mmcr->par[11]);
+ writel(CONFIG_SYS_SC520_SRAM2_PAR, &sc520_mmcr->par[12]);
+
+ /* PARs 0 and 1 are Compact Flash slots (4kB each) */
+ writel(CONFIG_SYS_SC520_CF1_PAR, &sc520_mmcr->par[0]);
+ writel(CONFIG_SYS_SC520_CF2_PAR, &sc520_mmcr->par[1]);
+
+ /* PAR 2 is used for Cache-As-RAM */
+
+ /*
+ * PARs 5 through 8 are additional NS16550 UARTS
+ * 8 bytes each @ 0x013f8, 0x012f8, 0x011f8 and 0x010f8
+ */
+ writel(CONFIG_SYS_SC520_UARTA_PAR, &sc520_mmcr->par[5]);
+ writel(CONFIG_SYS_SC520_UARTB_PAR, &sc520_mmcr->par[6]);
+ writel(CONFIG_SYS_SC520_UARTC_PAR, &sc520_mmcr->par[7]);
+ writel(CONFIG_SYS_SC520_UARTD_PAR, &sc520_mmcr->par[8]);
+
+ /* PARs 9 and 10 are 32MB StrataFlash @ 0x10000000 */
+ writel(CONFIG_SYS_SC520_SF1_PAR, &sc520_mmcr->par[9]);
+ writel(CONFIG_SYS_SC520_SF2_PAR, &sc520_mmcr->par[10]);
+
+ /* PAR 13 is 4kB DPRAM @ 0x18100000 (implemented in FPGA) */
+ writel(CONFIG_SYS_SC520_DPRAM_PAR, &sc520_mmcr->par[13]);
+
+ /*
+ * PAR 14 is Low Level I/O (LEDs, Hex Switches etc)
+ * Already configured in board_init16 (eNET_start16.S)
+ *
+ * PAR 15 is Boot ROM
+ * Already configured in board_init16 (eNET_start16.S)
+ */
+}
+
+
int board_early_init_r(void)
{
/* CPU Speed to 100MHz */
return 0;
}
-int dram_init(void)
-{
- init_sc520_dram();
- return 0;
-}
-
void show_boot_progress(int val)
{
uchar led_mask;
major = minor = 0;
+ outb(0x00, LED_LATCH_ADDRESS);
+
+ register_timer_isr(enet_timer_isr);
+
printf("Serck Controls eNET\n");
return 0;
}
-ulong board_flash_get_legacy (ulong base, int banknum, flash_info_t * info)
+ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
{
if (banknum == 0) { /* non-CFI boot flash */
info->portwidth = FLASH_CFI_8BIT;
info->chipwidth = FLASH_CFI_BY8;
info->interface = FLASH_CFI_X8;
return 1;
- } else
+ } else {
return 0;
+ }
}
int board_eth_init(bd_t *bis)
* active low polarity on PIC interrupt pins,
* active high polarity on all other irq pins
*/
- writew(0x0000,&sc520_mmcr->intpinpol);
+ writew(0x0000, &sc520_mmcr->intpinpol);
- /* Set PIT 0 -> IRQ0, RTC -> IRQ8, FP error -> IRQ13 */
+ /*
+ * PIT 0 -> IRQ0
+ * RTC -> IRQ8
+ * FP error -> IRQ13
+ * UART1 -> IRQ4
+ * UART2 -> IRQ3
+ */
writeb(SC520_IRQ0, &sc520_mmcr->pit_int_map[0]);
writeb(SC520_IRQ8, &sc520_mmcr->rtcmap);
writeb(SC520_IRQ13, &sc520_mmcr->ferrmap);
+ writeb(SC520_IRQ4, &sc520_mmcr->uart_int_map[0]);
+ writeb(SC520_IRQ3, &sc520_mmcr->uart_int_map[1]);
/* Disable all other interrupt sources */
writeb(SC520_IRQ_DISABLED, &sc520_mmcr->gp_tmr_int_map[0]);
writeb(SC520_IRQ_DISABLED, &sc520_mmcr->gp_tmr_int_map[2]);
writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pit_int_map[1]);
writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pit_int_map[2]);
- writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pci_int_map[0]); /* disable PCI INT A */
- writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pci_int_map[1]); /* disable PCI INT B */
- writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pci_int_map[2]); /* disable PCI INT C */
- writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pci_int_map[3]); /* disable PCI INT D */
- writeb(SC520_IRQ_DISABLED, &sc520_mmcr->dmabcintmap); /* disable DMA INT */
writeb(SC520_IRQ_DISABLED, &sc520_mmcr->ssimap);
writeb(SC520_IRQ_DISABLED, &sc520_mmcr->wdtmap);
writeb(SC520_IRQ_DISABLED, &sc520_mmcr->wpvmap);
writeb(SC520_IRQ_DISABLED, &sc520_mmcr->icemap);
}
+
+void enet_timer_isr(void)
+{
+ static long enet_ticks;
+
+ enet_ticks++;
+
+ /* Toggle Watchdog every 100ms */
+ if ((enet_ticks % 100) == 0)
+ hw_watchdog_reset();
+
+ /* Toggle Run LED every 500ms */
+ if ((enet_ticks % 500) == 0)
+ enet_toggle_run_led();
+}
+
+void hw_watchdog_reset(void)
+{
+ /* Watchdog Reset must be atomic */
+ long flag = disable_interrupts();
+
+ if (sc520_mmcr->piodata15_0 & WATCHDOG_PIO_BIT)
+ sc520_mmcr->pioclr15_0 = WATCHDOG_PIO_BIT;
+ else
+ sc520_mmcr->pioset15_0 = WATCHDOG_PIO_BIT;
+
+ if (flag)
+ enable_interrupts();
+}
+
+void enet_toggle_run_led(void)
+{
+ unsigned char leds_state = inb(LED_LATCH_ADDRESS);
+ if (leds_state & LED_RUN_BITMASK)
+ outb(leds_state & ~LED_RUN_BITMASK, LED_LATCH_ADDRESS);
+ else
+ outb(leds_state | LED_RUN_BITMASK, LED_LATCH_ADDRESS);
+}
projects / karo-tx-uboot.git / blobdiff