SPARC: Added generic support for SPARC architecture.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>

1 files changed, 297 insertions, 0 deletions

diff --git a/include/asm-sparc/prom.h b/include/asm-sparc/prom.h
new file mode 100644
index 0000000..d55cc86
--- /dev/null
+++ b/include/asm-sparc/prom.h
@@ -0,0 +1,297 @@
+/* OpenProm defines mainly taken from linux kernel header files
+ *
+ * openprom.h:  Prom structures and defines for access to the OPENBOOT
+ *              prom routines and data areas.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 2007 Daniel Hellstrom (daniel@gaisler.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef __SPARC_OPENPROM_H__
+#define __SPARC_OPENPROM_H__
+
+/* Empirical constants... */
+#define	LINUX_OPPROM_MAGIC      0x10010407
+
+#ifndef __ASSEMBLY__
+/* V0 prom device operations. */
+struct linux_dev_v0_funcs {
+	int (*v0_devopen) (char *device_str);
+	int (*v0_devclose) (int dev_desc);
+	int (*v0_rdblkdev) (int dev_desc, int num_blks, int blk_st, char *buf);
+	int (*v0_wrblkdev) (int dev_desc, int num_blks, int blk_st, char *buf);
+	int (*v0_wrnetdev) (int dev_desc, int num_bytes, char *buf);
+	int (*v0_rdnetdev) (int dev_desc, int num_bytes, char *buf);
+	int (*v0_rdchardev) (int dev_desc, int num_bytes, int dummy, char *buf);
+	int (*v0_wrchardev) (int dev_desc, int num_bytes, int dummy, char *buf);
+	int (*v0_seekdev) (int dev_desc, long logical_offst, int from);
+};
+
+/* V2 and later prom device operations. */
+struct linux_dev_v2_funcs {
+	int (*v2_inst2pkg) (int d);	/* Convert ihandle to phandle */
+	char *(*v2_dumb_mem_alloc) (char *va, unsigned sz);
+	void (*v2_dumb_mem_free) (char *va, unsigned sz);
+
+	/* To map devices into virtual I/O space. */
+	char *(*v2_dumb_mmap) (char *virta, int which_io, unsigned paddr,
+			       unsigned sz);
+	void (*v2_dumb_munmap) (char *virta, unsigned size);
+
+	int (*v2_dev_open) (char *devpath);
+	void (*v2_dev_close) (int d);
+	int (*v2_dev_read) (int d, char *buf, int nbytes);
+	int (*v2_dev_write) (int d, char *buf, int nbytes);
+	int (*v2_dev_seek) (int d, int hi, int lo);
+
+	/* Never issued (multistage load support) */
+	void (*v2_wheee2) (void);
+	void (*v2_wheee3) (void);
+};
+
+struct linux_mlist_v0 {
+	struct linux_mlist_v0 *theres_more;
+	char *start_adr;
+	unsigned num_bytes;
+};
+
+struct linux_mem_v0 {
+	struct linux_mlist_v0 **v0_totphys;
+	struct linux_mlist_v0 **v0_prommap;
+	struct linux_mlist_v0 **v0_available;	/* What we can use */
+};
+
+/* Arguments sent to the kernel from the boot prompt. */
+struct linux_arguments_v0 {
+	char *argv[8];
+	char args[100];
+	char boot_dev[2];
+	int boot_dev_ctrl;
+	int boot_dev_unit;
+	int dev_partition;
+	char *kernel_file_name;
+	void *aieee1;		/* XXX */
+};
+
+/* V2 and up boot things. */
+struct linux_bootargs_v2 {
+	char **bootpath;
+	char **bootargs;
+	int *fd_stdin;
+	int *fd_stdout;
+};
+
+/* The top level PROM vector. */
+struct linux_romvec {
+	/* Version numbers. */
+	unsigned int pv_magic_cookie;
+	unsigned int pv_romvers;
+	unsigned int pv_plugin_revision;
+	unsigned int pv_printrev;
+
+	/* Version 0 memory descriptors. */
+	struct linux_mem_v0 pv_v0mem;
+
+	/* Node operations. */
+	struct linux_nodeops *pv_nodeops;
+
+	char **pv_bootstr;
+	struct linux_dev_v0_funcs pv_v0devops;
+
+	char *pv_stdin;
+	char *pv_stdout;
+#define	PROMDEV_KBD	0	/* input from keyboard */
+#define	PROMDEV_SCREEN	0	/* output to screen */
+#define	PROMDEV_TTYA	1	/* in/out to ttya */
+#define	PROMDEV_TTYB	2	/* in/out to ttyb */
+
+	/* Blocking getchar/putchar.  NOT REENTRANT! (grr) */
+	int (*pv_getchar) (void);
+	void (*pv_putchar) (int ch);
+
+	/* Non-blocking variants. */
+	int (*pv_nbgetchar) (void);
+	int (*pv_nbputchar) (int ch);
+
+	void (*pv_putstr) (char *str, int len);
+
+	/* Miscellany. */
+	void (*pv_reboot) (char *bootstr);
+	void (*pv_printf) (__const__ char *fmt, ...);
+	void (*pv_abort) (void);
+	__volatile__ int *pv_ticks;
+	void (*pv_halt) (void);
+	void (**pv_synchook) (void);
+
+	/* Evaluate a forth string, not different proto for V0 and V2->up. */
+	union {
+		void (*v0_eval) (int len, char *str);
+		void (*v2_eval) (char *str);
+	} pv_fortheval;
+
+	struct linux_arguments_v0 **pv_v0bootargs;
+
+	/* Get ether address. */
+	unsigned int (*pv_enaddr) (int d, char *enaddr);
+
+	struct linux_bootargs_v2 pv_v2bootargs;
+	struct linux_dev_v2_funcs pv_v2devops;
+
+	int filler[15];
+
+	/* This one is sun4c/sun4 only. */
+	void (*pv_setctxt) (int ctxt, char *va, int pmeg);
+
+	/* Prom version 3 Multiprocessor routines. This stuff is crazy.
+	 * No joke. Calling these when there is only one cpu probably
+	 * crashes the machine, have to test this. :-)
+	 */
+
+	/* v3_cpustart() will start the cpu 'whichcpu' in mmu-context
+	 * 'thiscontext' executing at address 'prog_counter'
+	 */
+	int (*v3_cpustart) (unsigned int whichcpu, int ctxtbl_ptr,
+			    int thiscontext, char *prog_counter);
+
+	/* v3_cpustop() will cause cpu 'whichcpu' to stop executing
+	 * until a resume cpu call is made.
+	 */
+	int (*v3_cpustop) (unsigned int whichcpu);
+
+	/* v3_cpuidle() will idle cpu 'whichcpu' until a stop or
+	 * resume cpu call is made.
+	 */
+	int (*v3_cpuidle) (unsigned int whichcpu);
+
+	/* v3_cpuresume() will resume processor 'whichcpu' executing
+	 * starting with whatever 'pc' and 'npc' were left at the
+	 * last 'idle' or 'stop' call.
+	 */
+	int (*v3_cpuresume) (unsigned int whichcpu);
+};
+
+/* Routines for traversing the prom device tree. */
+struct linux_nodeops {
+	int (*no_nextnode) (int node);
+	int (*no_child) (int node);
+	int (*no_proplen) (int node, char *name);
+	int (*no_getprop) (int node, char *name, char *val);
+	int (*no_setprop) (int node, char *name, char *val, int len);
+	char *(*no_nextprop) (int node, char *name);
+};
+
+/* More fun PROM structures for device probing. */
+#define PROMREG_MAX     16
+#define PROMVADDR_MAX   16
+#define PROMINTR_MAX    15
+
+struct linux_prom_registers {
+	unsigned int which_io;	/* is this in OBIO space? */
+	unsigned int phys_addr;	/* The physical address of this register */
+	unsigned int reg_size;	/* How many bytes does this register take up? */
+};
+
+struct linux_prom_irqs {
+	int pri;		/* IRQ priority */
+	int vector;		/* This is foobar, what does it do? */
+};
+
+/* Element of the "ranges" vector */
+struct linux_prom_ranges {
+	unsigned int ot_child_space;
+	unsigned int ot_child_base;	/* Bus feels this */
+	unsigned int ot_parent_space;
+	unsigned int ot_parent_base;	/* CPU looks from here */
+	unsigned int or_size;
+};
+
+/* Ranges and reg properties are a bit different for PCI. */
+struct linux_prom_pci_registers {
+	/*
+	 * We don't know what information this field contain.
+	 * We guess, PCI device function is in bits 15:8
+	 * So, ...
+	 */
+	unsigned int which_io;	/* Let it be which_io */
+
+	unsigned int phys_hi;
+	unsigned int phys_lo;
+
+	unsigned int size_hi;
+	unsigned int size_lo;
+};
+
+struct linux_prom_pci_ranges {
+	unsigned int child_phys_hi;	/* Only certain bits are encoded here. */
+	unsigned int child_phys_mid;
+	unsigned int child_phys_lo;
+
+	unsigned int parent_phys_hi;
+	unsigned int parent_phys_lo;
+
+	unsigned int size_hi;
+	unsigned int size_lo;
+};
+
+struct linux_prom_pci_assigned_addresses {
+	unsigned int which_io;
+
+	unsigned int phys_hi;
+	unsigned int phys_lo;
+
+	unsigned int size_hi;
+	unsigned int size_lo;
+};
+
+struct linux_prom_ebus_ranges {
+	unsigned int child_phys_hi;
+	unsigned int child_phys_lo;
+
+	unsigned int parent_phys_hi;
+	unsigned int parent_phys_mid;
+	unsigned int parent_phys_lo;
+
+	unsigned int size;
+};
+
+/* Offset into the EEPROM where the id PROM is located on the 4c */
+#define IDPROM_OFFSET  0x7d8
+
+/* On sun4m; physical. */
+/* MicroSPARC(-II) does not decode 31rd bit, but it works. */
+#define IDPROM_OFFSET_M  0xfd8
+
+struct idprom {
+	unsigned char id_format;	/* Format identifier (always 0x01) */
+	unsigned char id_machtype;	/* Machine type */
+	unsigned char id_ethaddr[6];	/* Hardware ethernet address */
+	long id_date;		/* Date of manufacture */
+	unsigned int id_sernum:24;	/* Unique serial number */
+	unsigned char id_cksum;	/* Checksum - xor of the data bytes */
+	unsigned char reserved[16];
+};
+
+extern struct idprom *idprom;
+extern void idprom_init(void);
+
+#define IDPROM_SIZE  (sizeof(struct idprom))
+
+#endif				/* !(__ASSEMBLY__) */
+
+#endif