sticon/parisc: Fix STI console on 64-bit only machines

Fix the STI console to be able to execute either the 64-bit STI ROM code
or the 32-bit STI ROM code.

This is necessary on 64-bit only machines (e.g. C8000 workstation) which
otherwise won't show the STI text console with HP graphic cards like
Visualize-FX5/FX10/FXe.

Note that when calling 32-bit code from a 64-bit kernel one needs to
copy contents on the CPU stack from high memory down below the 4GB
limit.

Tested-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>

include/video/sticore.h

@@ -39,7 +39,6 @@ struct fb_info;
 #define STI_WAIT 1
 
 #define STI_PTR(p)	( virt_to_phys(p) )
-#define PTR_STI(p)	( phys_to_virt((unsigned long)p) )
 
 #define sti_onscreen_x(sti) (sti->glob_cfg->onscreen_x)
 #define sti_onscreen_y(sti) (sti->glob_cfg->onscreen_y)
@@ -78,8 +77,8 @@ struct sti_glob_cfg_ext {
 	 u8 friendly_boot;		/* in friendly boot mode */
 	s16 power;			/* power calculation (in Watts) */
 	s32 freq_ref;			/* frequency reference */
-	u32 sti_mem_addr;		/* pointer to global sti memory (size=sti_mem_request) */
-	u32 future_ptr; 		/* pointer to future data */
+	u32 *sti_mem_addr;		/* pointer to global sti memory (size=sti_mem_request) */
+	u32 *future_ptr;		/* pointer to future data */
 };
 
 struct sti_glob_cfg {
@@ -90,10 +89,10 @@ struct sti_glob_cfg {
 	s16 offscreen_y;		/* offset height in pixels */
 	s16 total_x;			/* frame buffer width in pixels */
 	s16 total_y;			/* frame buffer height in pixels */
-	u32 region_ptrs[STI_REGION_MAX]; /* region pointers */
+	u32 *region_ptrs[STI_REGION_MAX]; /* region pointers */
 	s32 reent_lvl;			/* storage for reentry level value */
-	u32 save_addr;			/* where to save or restore reentrant state */
-	u32 ext_ptr;			/* pointer to extended glob_cfg data structure */
+	u32 *save_addr;			/* where to save or restore reentrant state */
+	u32 *ext_ptr;			/* pointer to extended glob_cfg data structure */
 };
 
 
@@ -119,26 +118,26 @@ struct sti_init_flags {
 	u32 caller_kernel : 1;	/* set only by kernel for each call */
 	u32 caller_other : 1;	/* set only by non-[BR/K] caller */
 	u32 pad	: 14;		/* pad to word boundary */
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 struct sti_init_inptr_ext {
 	u8  config_mon_type;	/* configure to monitor type */
 	u8  pad[1];		/* pad to word boundary */
 	u16 inflight_data;	/* inflight data possible on PCI */
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 struct sti_init_inptr {
 	s32 text_planes;	/* number of planes to use for text */
-	u32 ext_ptr;		/* pointer to extended init_graph inptr data structure*/
+	u32 *ext_ptr;		/* pointer to extended init_graph inptr data structure*/
 };
 
 
 struct sti_init_outptr {
 	s32 errno;		/* error number on failure */
 	s32 text_planes;	/* number of planes used for text */
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 
@@ -148,17 +147,17 @@ struct sti_init_outptr {
 struct sti_conf_flags {
 	u32 wait : 1;		/* should routine idle wait or not */
 	u32 pad : 31;		/* pad to word boundary */
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 struct sti_conf_inptr {
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 struct sti_conf_outptr_ext {
 	u32 crt_config[3];	/* hardware specific X11/OGL information */
 	u32 crt_hdw[3];
-	u32 future_ptr;
+	u32 *future_ptr;
 };
 
 struct sti_conf_outptr {
@@ -174,7 +173,7 @@ struct sti_conf_outptr {
 	s32 planes;		/* number of fb planes in system */
 	 u8 dev_name[STI_DEV_NAME_LENGTH]; /* null terminated product name */
 	u32 attributes;		/* flags denoting attributes */
-	u32 ext_ptr;		/* pointer to future data */
+	u32 *ext_ptr;		/* pointer to future data */
 };
 
 struct sti_rom {
@@ -258,25 +257,25 @@ struct sti_cooked_rom {
 /* STI font printing function structs */
 
 struct sti_font_inptr {
-	u32 font_start_addr;	/* address of font start */
+	u32 *font_start_addr;	/* address of font start */
 	s16 index;		/* index into font table of character */
 	u8 fg_color;		/* foreground color of character */
 	u8 bg_color;		/* background color of character */
 	s16 dest_x;		/* X location of character upper left */
 	s16 dest_y;		/* Y location of character upper left */
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 struct sti_font_flags {
 	u32 wait : 1;		/* should routine idle wait or not */
 	u32 non_text : 1;	/* font unpack/move in non_text planes =1, text =0 */
 	u32 pad : 30;		/* pad to word boundary */
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 struct sti_font_outptr {
 	s32 errno;		/* error number on failure */
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 /* STI blockmove structs */
@@ -287,7 +286,7 @@ struct sti_blkmv_flags {
 	u32 clear : 1;		/* clear during move? */
 	u32 non_text : 1;	/* block move in non_text planes =1, text =0 */
 	u32 pad : 28;		/* pad to word boundary */
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 struct sti_blkmv_inptr {
@@ -299,12 +298,12 @@ struct sti_blkmv_inptr {
 	s16 dest_y;		/* dest upper left pixel y location */
 	s16 width;		/* block width in pixels */
 	s16 height;		/* block height in pixels */
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 struct sti_blkmv_outptr {
 	s32 errno;		/* error number on failure */
-	u32 future_ptr; 	/* pointer to future data */
+	u32 *future_ptr;	/* pointer to future data */
 };
 
 
@@ -351,6 +350,7 @@ struct sti_struct {
 	unsigned long block_move;
 	unsigned long init_graph;
 	unsigned long inq_conf;
+	int do_call64;			/* call 64-bit code */
 
 	/* all following fields are initialized by the generic routines */
 	int text_planes;