/*
- * (C) Copyright 2004 Nick Barker <nick.barker9@btinternet.com>
+ * (C) Copyright 2004-2005 Nick Barker <nick.barker@btinternet.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
-/* (C) Copyright 2005 Nick Barker <nick.barker@btinternet.com
- brought into line with the current architecture of coreboot */
#include <arch/io.h>
#include <device/device.h>
static int enable_cf_boot = 0;
static unsigned int cf_base;
-static void udelay(int i)
-{
- for(; i > 0 ; i--)
- inb(0x80);
-}
-
static void rl5c476_init(device_t dev)
{
- //unsigned char enables;
pc16reg_t *pc16;
-
unsigned char *base;
/* cardbus controller function 1 for CF Socket */
- printk_debug("rl5c476 init\n");
+ printk_debug("Ricoh RL5c476: Initializing.\n");
printk_debug("CF Base = %0x\n",cf_base);
pci_write_config16(dev,0x82,0x00a0);
/* set up second slot as compact flash port if asked to do so */
- if( enable_cf_boot && (PCI_FUNC(dev->path.pci.devfn) == 1)){
-
- /* make sure isa interrupts are enabled */
- pci_write_config16(dev,0x3e,0x0780);
-
- /* pick up where 16 bit card control structure is (0x800 bytes into config structure) */
- base = (unsigned char *)pci_read_config32(dev,0x10);
- pc16 = (pc16reg_t *)(base + 0x800);
-
- /* disable memory and io windows and turn off socket power */
- pc16->pwctrl = 0;
-
- /* disable irq lines */
- pc16->igctrl = 0;
-
- /* disable memory and I/O windows */
- pc16->awinen = 0;
-
- /* reset card, configure for I/O and set IRQ line */
- pc16->igctrl = 0x69;
-
- // set io window 0 for 1e0 - 1ef
- /* note this now sets CF up on a contiguous I/O window of 16 bytes, 0x1e0 to 0x1ef
- Be warned that this is not a standard IDE address as automatically detected by the likes
- of Filo, and would need patching to recognise these addresses as an IDE drive */
- /* an earlier version of this driver set up 2 io windows to emulate the expected addresses
- for IDE2, however the pcmcia package within Linux then could not re-initiailse the
- device as it tried to take control of it. So I belive it is easier to patch Filo or the like
- to pick up this drive rather than playing silly games as the kernel tries to boot.
- */
- pc16->iostl0 = 0xe0;
- pc16->iosth0 = 1;
-
- pc16->iospl0 = 0xef;
- pc16->iosph0 = 1;
-
- pc16->ioffl0 = 0;
- pc16->ioffh0 = 0;
-
- // clear window 1
- pc16->iostl1 = 0;
- pc16->iosth1 = 0;
- pc16->iospl1 = 0;
- pc16->iosph1 = 0;
-
- pc16->ioffl1 = 0x0;
- pc16->ioffh1 = 0;
-
- // set up CF config window
- pc16->smpga0 = cf_base>>24;
- pc16->smsth0 = (cf_base>>20)&0x0f;
- pc16->smstl0 = (cf_base>>12)&0xff;
- pc16->smsph0 = ((cf_base>>20)&0x0f) | 0x80;
- pc16->smspl0 = (cf_base>>12)&0xff;
- pc16->moffl0 = 0;
- pc16->moffh0 = 0x40;
-
-
- // set I/O width for Auto Data width
- pc16->ioctrl = 0x22;
-
-
- // enable I/O window 0 and 1
- pc16->awinen = 0xc1;
-
-
- pc16->miscc1 = 1;
-
- // apply power and enable outputs
- pc16->pwctrl = 0xb0;
-
-
- // delay could be optimised, but this works
- udelay(100000);
+ if (!enable_cf_boot) {
+ printk_debug("CF boot not enabled.\n");
+ return;
+ }
- pc16->igctrl = 0x69;
-
-
- // 16 bit CF always have first config byte at 0x200 into Config structure,
- // but CF+ May Not according to spec - should locate through reading tuple data,
- // but this will do for now !!!
- unsigned char *cptr;
- cptr = (unsigned char *)(cf_base + 0x200);
- printk_debug("CF Config = %x\n",*cptr);
-
- // set CF to decode 16 IO bytes on any 16 byte boundary - rely on the io
- // windows of the bridge set up above to map those bytes into the
- // addresses for ide controller 3 (0x1e8 - 0x1ef and 0x3ed - 0x3ee)
- *cptr = 0x41;
+ if (PCI_FUNC(dev->path.pci.devfn) != 1) {
+ // Only configure if second CF slot.
+ return;
}
+ /* make sure isa interrupts are enabled */
+ pci_write_config16(dev,0x3e,0x0780);
+
+ /* pick up where 16 bit card control structure is
+ * (0x800 bytes into config structure)
+ */
+ base = (unsigned char *)pci_read_config32(dev,0x10);
+ pc16 = (pc16reg_t *)(base + 0x800);
+
+ /* disable memory and io windows and turn off socket power */
+ pc16->pwctrl = 0;
+
+ /* disable irq lines */
+ pc16->igctrl = 0;
+
+ /* disable memory and I/O windows */
+ pc16->awinen = 0;
+
+ /* reset card, configure for I/O and set IRQ line */
+ pc16->igctrl = 0x69;
+
+ /* set io window 0 for 1e0 - 1ef */
+ /* NOTE: This now sets CF up on a contiguous I/O window of
+ * 16 bytes, 0x1e0 to 0x1ef.
+ * Be warned that this is not a standard IDE address as
+ * automatically detected by the likes of FILO, and would need
+ * patching to recognise these addresses as an IDE drive.
+ *
+ * An earlier version of this driver set up 2 I/O windows to
+ * emulate the expected addresses for IDE2, however the PCMCIA
+ * package within Linux then could not re-initialize the
+ * device as it tried to take control of it. So I believe it is
+ * easier to patch Filo or the like to pick up this drive
+ * rather than playing silly games as the kernel tries to
+ * boot.
+ *
+ * Nonetheless, FILO needs a special option enabled to boot
+ * from this configuration, and it needs to clean up
+ * afterwards. Please refer to FILO documentation and source
+ * code for more details.
+ */
+ pc16->iostl0 = 0xe0;
+ pc16->iosth0 = 1;
+
+ pc16->iospl0 = 0xef;
+ pc16->iosph0 = 1;
+
+ pc16->ioffl0 = 0;
+ pc16->ioffh0 = 0;
+
+ /* clear window 1 */
+ pc16->iostl1 = 0;
+ pc16->iosth1 = 0;
+
+ pc16->iospl1 = 0;
+ pc16->iosph1 = 0;
+
+ pc16->ioffl1 = 0x0;
+ pc16->ioffh1 = 0;
+
+ /* set up CF config window */
+ pc16->smpga0 = cf_base>>24;
+ pc16->smsth0 = (cf_base>>20)&0x0f;
+ pc16->smstl0 = (cf_base>>12)&0xff;
+ pc16->smsph0 = ((cf_base>>20)&0x0f) | 0x80;
+ pc16->smspl0 = (cf_base>>12)&0xff;
+ pc16->moffl0 = 0;
+ pc16->moffh0 = 0x40;
+
+
+ /* set I/O width for Auto Data width */
+ pc16->ioctrl = 0x22;
+
+
+ /* enable I/O window 0 and 1 */
+ pc16->awinen = 0xc1;
+
+ pc16->miscc1 = 1;
+
+ /* apply power and enable outputs */
+ pc16->pwctrl = 0xb0;
+
+ // delay could be optimised, but this works
+ udelay(100000);
+
+ pc16->igctrl = 0x69;
+
+
+ /* 16 bit CF always have first config byte at 0x200 into
+ * Config structure, but CF+ may not according to spec -
+ * should locate through reading tuple data, but this should
+ * do for now.
+ */
+ unsigned char *cptr;
+ cptr = (unsigned char *)(cf_base + 0x200);
+ printk_debug("CF Config = %x\n",*cptr);
+
+ /* Set CF to decode 16 IO bytes on any 16 byte boundary -
+ * rely on the io windows of the bridge set up above to
+ * map those bytes into the addresses for IDE controller 3
+ * (0x1e8 - 0x1ef and 0x3ed - 0x3ee)
+ */
+ *cptr = 0x41;
}
void rl5c476_read_resources(device_t dev)
struct resource *resource;
- /* for cf socket we need an extra memory window for the control structure of the cf itself */
+ /* For CF socket we need an extra memory window for
+ * the control structure of the CF itself
+ */
if( enable_cf_boot && (PCI_FUNC(dev->path.pci.devfn) == 1)){
- resource = new_resource(dev,1); /* fake index as it isn't in pci config space */
+ /* fake index as it isn't in PCI config space */
+ resource = new_resource(dev, 1);
resource->flags |= IORESOURCE_MEM ;
resource->size = 0x1000;
resource->align = resource->gran = 12;
projects / coreboot.git / commitdiff