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authorWolfgang Denk <wd@pollux.denx.de>2006-07-10 23:07:28 +0200
committerWolfgang Denk <wd@pollux.denx.de>2006-07-10 23:07:28 +0200
commit9d407995516bfcd401b76de0c11e679fb3871c79 (patch)
treedae126efb15ae0a160bd1b3f0b18ad2735c6c015 /board/mbx8xx
parenta874c8c65f57ecfbb8c7961525ac4376b6fbab8b (diff)
downloadu-boot-linaro-stable-9d407995516bfcd401b76de0c11e679fb3871c79.tar.gz
Major PCMCIA Cleanup to make code better readable and maintainable.
Notes: - Board-dependend code for RPXLITE and RPXCLASSIC-based boards placed to the drivers/rpx_pmcia.c file to avoid duplication. Same for TQM8xx-based boards (drivers/tqm8xx_pmcia.c). - drivers/i82365.c has been split into two parts located at board/atc/ti113x.c and board/cpc45/pd67290.c (ATC and CPC45 are the only boards using CONFIG_82365). - Changes were tested for clean build and *very* *few* boards.
Diffstat (limited to 'board/mbx8xx')
-rw-r--r--board/mbx8xx/Makefile2
-rw-r--r--board/mbx8xx/pcmcia.c166
2 files changed, 167 insertions, 1 deletions
diff --git a/board/mbx8xx/Makefile b/board/mbx8xx/Makefile
index 3e8376cc0..e4d10994e 100644
--- a/board/mbx8xx/Makefile
+++ b/board/mbx8xx/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
LIB = lib$(BOARD).a
-OBJS = $(BOARD).o flash.o vpd.o
+OBJS = $(BOARD).o flash.o vpd.o pcmcia.o
$(LIB): .depend $(OBJS)
$(AR) crv $@ $(OBJS)
diff --git a/board/mbx8xx/pcmcia.c b/board/mbx8xx/pcmcia.c
new file mode 100644
index 000000000..132a68806
--- /dev/null
+++ b/board/mbx8xx/pcmcia.c
@@ -0,0 +1,166 @@
+#include <common.h>
+#include <mpc8xx.h>
+#include <pcmcia.h>
+
+#include "csr.h"
+
+#undef CONFIG_PCMCIA
+
+#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+#define CONFIG_PCMCIA
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
+#define CONFIG_PCMCIA
+#endif
+
+#ifdef CONFIG_PCMCIA
+
+/* A lot of this has been taken from the RPX code in this file it works from me.
+ I have added the voltage selection for the MBX board. */
+
+/* MBX voltage bit in control register #2 */
+#define CR2_VPP12 ((uchar)0x10)
+#define CR2_VPPVDD ((uchar)0x20)
+#define CR2_VDD5 ((uchar)0x40)
+#define CR2_VDD3 ((uchar)0x80)
+
+#define PCMCIA_BOARD_MSG "MBX860"
+
+int pcmcia_voltage_set (int slot, int vcc, int vpp)
+{
+ uchar reg = 0;
+
+ debug ("voltage_set: PCMCIA_BOARD_MSG Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
+ 'A' + slot, vcc / 10, vcc % 10, vpp / 10, vcc % 10);
+
+ switch (vcc) {
+ case 0:
+ break;
+ case 33:
+ reg |= CR2_VDD3;
+ break;
+ case 50:
+ reg |= CR2_VDD5;
+ break;
+ default:
+ return 1;
+ }
+
+ switch (vpp) {
+ case 0:
+ break;
+ case 33:
+ case 50:
+ if (vcc == vpp) {
+ reg |= CR2_VPPVDD;
+ } else {
+ return 1;
+ }
+ break;
+ case 120:
+ reg |= CR2_VPP12;
+ break;
+ default:
+ return 1;
+ }
+
+ /* first, turn off all power */
+ MBX_CSR2 &= ~(CR2_VDDSEL | CR2_VPPSEL);
+
+ /* enable new powersettings */
+ MBX_CSR2 |= reg;
+ debug ("MBX_CSR2 read = 0x%02x\n", MBX_CSR2);
+
+ return (0);
+}
+
+int pcmcia_hardware_enable (int slot)
+{
+ volatile immap_t *immap;
+ volatile cpm8xx_t *cp;
+ volatile pcmconf8xx_t *pcmp;
+ volatile sysconf8xx_t *sysp;
+ uint reg, mask;
+
+ debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n",
+ 'A' + slot);
+
+ udelay (10000);
+
+ immap = (immap_t *) CFG_IMMR;
+ sysp = (sysconf8xx_t *) (&(((immap_t *) CFG_IMMR)->im_siu_conf));
+ pcmp = (pcmconf8xx_t *) (&(((immap_t *) CFG_IMMR)->im_pcmcia));
+ cp = (cpm8xx_t *) (&(((immap_t *) CFG_IMMR)->im_cpm));
+
+ /* clear interrupt state, and disable interrupts */
+ pcmp->pcmc_pscr = PCMCIA_MASK (_slot_);
+ pcmp->pcmc_per &= ~PCMCIA_MASK (_slot_);
+
+ /*
+ * Disable interrupts, DMA, and PCMCIA buffers
+ * (isolate the interface) and assert RESET signal
+ */
+ debug ("Disable PCMCIA buffers and assert RESET\n");
+ reg = 0;
+ reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
+ reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
+ PCMCIA_PGCRX (_slot_) = reg;
+ udelay (500);
+
+ /* remove all power */
+ pcmcia_voltage_set (slot, 0, 0);
+ /*
+ * Make sure there is a card in the slot, then configure the interface.
+ */
+ udelay(10000);
+ debug ("[%d] %s: PIPR(%p)=0x%x\n",
+ __LINE__,__FUNCTION__,
+ &(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
+#ifndef CONFIG_HMI10
+ if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
+#else
+ if (pcmp->pcmc_pipr & (0x10000000 >> (slot << 4))) {
+#endif /* CONFIG_HMI10 */
+ printf (" No Card found\n");
+ return (1);
+ }
+
+ /*
+ * Power On.
+ */
+ mask = PCMCIA_VS1 (_slot_) | PCMCIA_VS2 (_slot_);
+ reg = pcmp->pcmc_pipr;
+ debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n", reg,
+ (reg & PCMCIA_VS1 (slot)) ? "n" : "ff",
+ (reg & PCMCIA_VS2 (slot)) ? "n" : "ff");
+
+ if ((reg & mask) == mask) {
+ pcmcia_voltage_set (_slot_, 50, 0);
+ printf (" 5.0V card found: ");
+ } else {
+ pcmcia_voltage_set (_slot_, 33, 0);
+ printf (" 3.3V card found: ");
+ }
+
+ debug ("Enable PCMCIA buffers and stop RESET\n");
+ reg = PCMCIA_PGCRX (_slot_);
+ reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
+ reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
+ PCMCIA_PGCRX (_slot_) = reg;
+
+ udelay (250000); /* some cards need >150 ms to come up :-( */
+
+ debug ("# hardware_enable done\n");
+
+ return (0);
+ }
+
+#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+int pcmcia_hardware_disable (int slot)
+{
+ return 0; /* No hardware to disable */
+}
+#endif /* CFG_CMD_PCMCIA */
+
+#endif /* CONFIG_PCMCIA */