--- /dev/null
+#include <common.h>
+#include <mpc8xx.h>
+#include <pcmcia.h>
+#include <linux/compiler.h>
+
+#undef CONFIG_PCMCIA
+
+#if defined(CONFIG_CMD_PCMCIA)
+#define CONFIG_PCMCIA
+#endif
+
+#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
+#define CONFIG_PCMCIA
+#endif
+
+#if defined(CONFIG_PCMCIA)
+
+#if defined(CONFIG_IDE_8xx_PCCARD)
+extern int check_ide_device (int slot);
+#endif
+
+extern int pcmcia_hardware_enable (int slot);
+extern int pcmcia_voltage_set(int slot, int vcc, int vpp);
+
+#if defined(CONFIG_CMD_PCMCIA)
+extern int pcmcia_hardware_disable(int slot);
+#endif
+
+static u_int m8xx_get_graycode(u_int size);
+#if 0 /* Disabled */
+static u_int m8xx_get_speed(u_int ns, u_int is_io);
+#endif
+
+/* look up table for pgcrx registers */
+u_int *pcmcia_pgcrx[2] = {
+ &((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pgcra,
+ &((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pgcrb,
+};
+
+/*
+ * Search this table to see if the windowsize is
+ * supported...
+ */
+
+#define M8XX_SIZES_NO 32
+
+static const u_int m8xx_size_to_gray[M8XX_SIZES_NO] =
+{ 0x00000001, 0x00000002, 0x00000008, 0x00000004,
+ 0x00000080, 0x00000040, 0x00000010, 0x00000020,
+ 0x00008000, 0x00004000, 0x00001000, 0x00002000,
+ 0x00000100, 0x00000200, 0x00000800, 0x00000400,
+
+ 0x0fffffff, 0xffffffff, 0xffffffff, 0xffffffff,
+ 0x01000000, 0x02000000, 0xffffffff, 0x04000000,
+ 0x00010000, 0x00020000, 0x00080000, 0x00040000,
+ 0x00800000, 0x00400000, 0x00100000, 0x00200000 };
+
+
+/* -------------------------------------------------------------------- */
+
+#if defined(CONFIG_LWMON) || defined(CONFIG_NSCU)
+#define CONFIG_SYS_PCMCIA_TIMING ( PCMCIA_SHT(9) \
+ | PCMCIA_SST(3) \
+ | PCMCIA_SL(12))
+#else
+#define CONFIG_SYS_PCMCIA_TIMING ( PCMCIA_SHT(2) \
+ | PCMCIA_SST(4) \
+ | PCMCIA_SL(9))
+#endif
+
+/* -------------------------------------------------------------------- */
+
+int pcmcia_on (void)
+{
+ u_long reg, base;
+ pcmcia_win_t *win;
+ u_int rc, slot;
+ __maybe_unused u_int slotbit;
+ int i;
+
+ debug ("Enable PCMCIA " PCMCIA_SLOT_MSG "\n");
+
+ /* intialize the fixed memory windows */
+ win = (pcmcia_win_t *)(&((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pbr0);
+ base = CONFIG_SYS_PCMCIA_MEM_ADDR;
+
+ if((reg = m8xx_get_graycode(CONFIG_SYS_PCMCIA_MEM_SIZE)) == -1) {
+ printf ("Cannot set window size to 0x%08x\n",
+ CONFIG_SYS_PCMCIA_MEM_SIZE);
+ return (1);
+ }
+
+ slotbit = PCMCIA_SLOT_x;
+ for (i=0; i<PCMCIA_MEM_WIN_NO; ++i) {
+ win->br = base;
+
+#if (PCMCIA_SOCKETS_NO == 2)
+ if (i == 4) /* Another slot starting from win 4 */
+ slotbit = (slotbit ? PCMCIA_PSLOT_A : PCMCIA_PSLOT_B);
+#endif
+ switch (i) {
+#ifdef CONFIG_IDE_8xx_PCCARD
+ case 4:
+ case 0: { /* map attribute memory */
+ win->or = ( PCMCIA_BSIZE_64M
+ | PCMCIA_PPS_8
+ | PCMCIA_PRS_ATTR
+ | slotbit
+ | PCMCIA_PV
+ | CONFIG_SYS_PCMCIA_TIMING );
+ break;
+ }
+ case 5:
+ case 1: { /* map I/O window for data reg */
+ win->or = ( PCMCIA_BSIZE_1K
+ | PCMCIA_PPS_16
+ | PCMCIA_PRS_IO
+ | slotbit
+ | PCMCIA_PV
+ | CONFIG_SYS_PCMCIA_TIMING );
+ break;
+ }
+ case 6:
+ case 2: { /* map I/O window for cmd/ctrl reg block */
+ win->or = ( PCMCIA_BSIZE_1K
+ | PCMCIA_PPS_8
+ | PCMCIA_PRS_IO
+ | slotbit
+ | PCMCIA_PV
+ | CONFIG_SYS_PCMCIA_TIMING );
+ break;
+ }
+#endif /* CONFIG_IDE_8xx_PCCARD */
+ default: /* set to not valid */
+ win->or = 0;
+ break;
+ }
+
+ debug ("MemWin %d: PBR 0x%08lX POR %08lX\n",
+ i, win->br, win->or);
+ base += CONFIG_SYS_PCMCIA_MEM_SIZE;
+ ++win;
+ }
+
+ for (i=0, rc=0, slot=_slot_; i<PCMCIA_SOCKETS_NO; i++, slot = !slot) {
+ /* turn off voltage */
+ if ((rc = pcmcia_voltage_set(slot, 0, 0)))
+ continue;
+
+ /* Enable external hardware */
+ if ((rc = pcmcia_hardware_enable(slot)))
+ continue;
+
+#ifdef CONFIG_IDE_8xx_PCCARD
+ if ((rc = check_ide_device(i)))
+ continue;
+#endif
+ }
+ return rc;
+}
+
+#if defined(CONFIG_CMD_PCMCIA)
+int pcmcia_off (void)
+{
+ int i;
+ pcmcia_win_t *win;
+
+ printf ("Disable PCMCIA " PCMCIA_SLOT_MSG "\n");
+
+ /* clear interrupt state, and disable interrupts */
+ ((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pscr = PCMCIA_MASK(_slot_);
+ ((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_per &= ~PCMCIA_MASK(_slot_);
+
+ /* turn off interrupt and disable CxOE */
+ PCMCIA_PGCRX(_slot_) = __MY_PCMCIA_GCRX_CXOE;
+
+ /* turn off memory windows */
+ win = (pcmcia_win_t *)(&((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pbr0);
+
+ for (i=0; i<PCMCIA_MEM_WIN_NO; ++i) {
+ /* disable memory window */
+ win->or = 0;
+ ++win;
+ }
+
+ /* turn off voltage */
+ pcmcia_voltage_set(_slot_, 0, 0);
+
+ /* disable external hardware */
+ printf ("Shutdown and Poweroff " PCMCIA_SLOT_MSG "\n");
+ pcmcia_hardware_disable(_slot_);
+ return 0;
+}
+#endif
+
+
+static u_int m8xx_get_graycode(u_int size)
+{
+ u_int k;
+
+ for (k = 0; k < M8XX_SIZES_NO; k++) {
+ if(m8xx_size_to_gray[k] == size)
+ break;
+ }
+
+ if((k == M8XX_SIZES_NO) || (m8xx_size_to_gray[k] == -1))
+ k = -1;
+
+ return k;
+}
+
+#if 0
+
+#if defined(CONFIG_RPXLITE)
+
+/* The RPX boards seems to have it's bus monitor timeout set to 6*8 clocks.
+ * SYPCR is write once only, therefore must the slowest memory be faster
+ * than the bus monitor or we will get a machine check due to the bus timeout.
+ */
+#undef PCMCIA_BMT_LIMIT
+#define PCMCIA_BMT_LIMIT (6*8)
+#endif
+
+static u_int m8xx_get_speed(u_int ns, u_int is_io)
+{
+ u_int reg, clocks, psst, psl, psht;
+
+ if(!ns) {
+
+ /*
+ * We get called with IO maps setup to 0ns
+ * if not specified by the user.
+ * They should be 255ns.
+ */
+
+ if(is_io)
+ ns = 255;
+ else
+ ns = 100; /* fast memory if 0 */
+ }
+
+ /*
+ * In PSST, PSL, PSHT fields we tell the controller
+ * timing parameters in CLKOUT clock cycles.
+ * CLKOUT is the same as GCLK2_50.
+ */
+
+ /* how we want to adjust the timing - in percent */
+
+#define ADJ 180 /* 80 % longer accesstime - to be sure */
+
+ clocks = ((M8XX_BUSFREQ / 1000) * ns) / 1000;
+ clocks = (clocks * ADJ) / (100*1000);
+
+ if(clocks >= PCMCIA_BMT_LIMIT) {
+ DEBUG(0, "Max access time limit reached\n");
+ clocks = PCMCIA_BMT_LIMIT-1;
+ }
+
+ psst = clocks / 7; /* setup time */
+ psht = clocks / 7; /* hold time */
+ psl = (clocks * 5) / 7; /* strobe length */
+
+ psst += clocks - (psst + psht + psl);
+
+ reg = psst << 12;
+ reg |= psl << 7;
+ reg |= psht << 16;
+
+ return reg;
+}
+#endif /* 0 */
+
+#endif /* CONFIG_PCMCIA */
Code Review / kvmfornfv.git / blobdiff