+++ /dev/null
-/*
- * Maintainer: Tom Rini <trini@kernel.crashing.org>
- *
- * In the past: Gary Thomas, Cort Dougan <cort@cs.nmt.edu>
- */
-
-#include <linux/pci_ids.h>
-#include <linux/types.h>
-#include <asm/residual.h>
-#include <asm/string.h>
-#include <asm/byteorder.h>
-#include "mpc10x.h"
-#include "of1275.h"
-#include "nonstdio.h"
-
-extern int keyb_present; /* keyboard controller is present by default */
-RESIDUAL hold_resid_buf;
-RESIDUAL *hold_residual = &hold_resid_buf;
-static void *OFW_interface; /* Pointer to OF, if available. */
-
-#ifdef CONFIG_VGA_CONSOLE
-char *vidmem = (char *)0xC00B8000;
-int lines = 25, cols = 80;
-int orig_x, orig_y = 24;
-#endif /* CONFIG_VGA_CONSOLE */
-
-extern int CRT_tstc(void);
-extern int vga_init(unsigned char *ISA_mem);
-extern void gunzip(void *, int, unsigned char *, int *);
-extern unsigned long serial_init(int chan, void *ignored);
-extern void serial_fixups(void);
-extern struct bi_record *decompress_kernel(unsigned long load_addr,
- int num_words, unsigned long cksum);
-extern void disable_6xx_mmu(void);
-extern unsigned long mpc10x_get_mem_size(void);
-
-static void
-writel(unsigned int val, unsigned int address)
-{
- /* Ensure I/O operations complete */
- __asm__ volatile("eieio");
- *(unsigned int *)address = cpu_to_le32(val);
-}
-
-#define PCI_CFG_ADDR(dev,off) ((0x80<<24) | (dev<<8) | (off&0xfc))
-#define PCI_CFG_DATA(off) (MPC10X_MAPA_CNFG_DATA+(off&3))
-
-static void
-pci_read_config_32(unsigned char devfn,
- unsigned char offset,
- unsigned int *val)
-{
- /* Ensure I/O operations complete */
- __asm__ volatile("eieio");
- *(unsigned int *)PCI_CFG_ADDR(devfn,offset) =
- cpu_to_le32(MPC10X_MAPA_CNFG_ADDR);
- /* Ensure I/O operations complete */
- __asm__ volatile("eieio");
- *val = le32_to_cpu(*(unsigned int *)PCI_CFG_DATA(offset));
- return;
-}
-
-#ifdef CONFIG_VGA_CONSOLE
-void
-scroll(void)
-{
- int i;
-
- memcpy ( vidmem, vidmem + cols * 2, ( lines - 1 ) * cols * 2 );
- for ( i = ( lines - 1 ) * cols * 2; i < lines * cols * 2; i += 2 )
- vidmem[i] = ' ';
-}
-#endif /* CONFIG_VGA_CONSOLE */
-
-unsigned long
-load_kernel(unsigned long load_addr, int num_words, unsigned long cksum,
- RESIDUAL *residual, void *OFW)
-{
- int start_multi = 0;
- unsigned int pci_viddid, pci_did, tulip_pci_base, tulip_base;
-
- /* If we have Open Firmware, initialise it immediately */
- if (OFW) {
- OFW_interface = OFW;
- ofinit(OFW_interface);
- }
-
- board_isa_init();
-#if defined(CONFIG_VGA_CONSOLE)
- vga_init((unsigned char *)0xC0000000);
-#endif /* CONFIG_VGA_CONSOLE */
-
- if (residual) {
- /* Is this Motorola PPCBug? */
- if ((1 & residual->VitalProductData.FirmwareSupports) &&
- (1 == residual->VitalProductData.FirmwareSupplier)) {
- unsigned char base_mod;
- unsigned char board_type = inb(0x801) & 0xF0;
-
- /*
- * Reset the onboard 21x4x Ethernet
- * Motorola Ethernet is at IDSEL 14 (devfn 0x70)
- */
- pci_read_config_32(0x70, 0x00, &pci_viddid);
- pci_did = (pci_viddid & 0xffff0000) >> 16;
- /* Be sure we've really found a 21x4x chip */
- if (((pci_viddid & 0xffff) == PCI_VENDOR_ID_DEC) &&
- ((pci_did == PCI_DEVICE_ID_DEC_TULIP_FAST) ||
- (pci_did == PCI_DEVICE_ID_DEC_TULIP) ||
- (pci_did == PCI_DEVICE_ID_DEC_TULIP_PLUS) ||
- (pci_did == PCI_DEVICE_ID_DEC_21142))) {
- pci_read_config_32(0x70,
- 0x10,
- &tulip_pci_base);
- /* Get the physical base address */
- tulip_base =
- (tulip_pci_base & ~0x03UL) + 0x80000000;
- /* Strobe the 21x4x reset bit in CSR0 */
- writel(0x1, tulip_base);
- }
-
- /* If this is genesis 2 board then check for no
- * keyboard controller and more than one processor.
- */
- if (board_type == 0xe0) {
- base_mod = inb(0x803);
- /* if a MVME2300/2400 or a Sitka then no keyboard */
- if((base_mod == 0xFA) || (base_mod == 0xF9) ||
- (base_mod == 0xE1)) {
- keyb_present = 0; /* no keyboard */
- }
- }
- /* If this is a multiprocessor system then
- * park the other processor so that the
- * kernel knows where to find them.
- */
- if (residual->MaxNumCpus > 1)
- start_multi = 1;
- }
- memcpy(hold_residual,residual,sizeof(RESIDUAL));
- }
-
- /* Call decompress_kernel */
- decompress_kernel(load_addr, num_words, cksum);
-
- if (start_multi) {
- residual->VitalProductData.SmpIar = (unsigned long)0xc0;
- residual->Cpus[1].CpuState = CPU_GOOD;
- hold_residual->VitalProductData.Reserved5 = 0xdeadbeef;
- }
-
- /* Now go and clear out the BATs and ensure that our MSR is
- * correct .*/
- disable_6xx_mmu();
-
- /* Make r3 be a pointer to the residual data. */
- return (unsigned long)hold_residual;
-}
-
-unsigned long
-get_mem_size(void)
-{
- unsigned int pci_viddid, pci_did;
-
- /* First, figure out what kind of host bridge we are on. If it's
- * an MPC10x, we can ask it directly how much memory it has.
- * Otherwise, see if the residual data has anything. This isn't
- * the best way, but it can be the only way. If there's nothing,
- * assume 32MB. -- Tom.
- */
- /* See what our host bridge is. */
- pci_read_config_32(0x00, 0x00, &pci_viddid);
- pci_did = (pci_viddid & 0xffff0000) >> 16;
- /* See if we are on an MPC10x. */
- if (((pci_viddid & 0xffff) == PCI_VENDOR_ID_MOTOROLA)
- && ((pci_did == PCI_DEVICE_ID_MOTOROLA_MPC105)
- || (pci_did == PCI_DEVICE_ID_MOTOROLA_MPC106)
- || (pci_did == PCI_DEVICE_ID_MOTOROLA_MPC107)))
- return mpc10x_get_mem_size();
- /* If it's not, see if we have anything in the residual data. */
- else if (hold_residual && hold_residual->TotalMemory)
- return hold_residual->TotalMemory;
- else if (OFW_interface) {
- /*
- * This is a 'best guess' check. We want to make sure
- * we don't try this on a PReP box without OF
- * -- Cort
- */
- while (OFW_interface)
- {
- phandle dev_handle;
- int mem_info[2];
-
- /* get handle to memory description */
- if (!(dev_handle = finddevice("/memory@0")))
- break;
-
- /* get the info */
- if (getprop(dev_handle, "reg", mem_info,
- sizeof(mem_info)) != 8)
- break;
-
- return mem_info[1];
- }
- }
-
- /* Fall back to hard-coding 32MB. */
- return 32*1024*1024;
-}
git.samba.org / sfrench / cifs-2.6.git / blobdiff