** 98/04/25 Phil Blundell: added HP300 support
** 1998/08/30 David Kilzer: Added support for font_desc structures
** for linux-2.1.115
-** 9/02/11 Richard Zidlicky: added Q40 support (initial vesion 99/01/01)
+** 1999/02/11 Richard Zidlicky: added Q40 support (initial version 99/01/01)
** 2004/05/13 Kars de Jong: Finalised HP300 support
**
** This file is subject to the terms and conditions of the GNU General Public
* ------------
* The console is also able to be turned off. The console in head.S
* is specifically for debugging and can be very useful. It is surrounded by
- * #ifdef CONSOLE/#endif clauses so it doesn't have to ship in known-good
+ * #ifdef / #endif clauses so it doesn't have to ship in known-good
* kernels. It's basic algorithm is to determine the size of the screen
* (in height/width and bit depth) and then use that information for
* displaying an 8x8 font or an 8x16 (widthxheight). I prefer the 8x8 for
* CONFIG_xxx: These are the obvious machine configuration defines created
* during configuration. These are defined in autoconf.h.
*
- * CONSOLE: There is support for head.S console in this file. This
- * console can talk to a Mac frame buffer, but could easily be extrapolated
- * to extend it to support other platforms.
+ * CONSOLE_DEBUG: Only supports a Mac frame buffer but could easily be
+ * extended to support other platforms.
*
* TEST_MMU: This is a test harness for running on any given machine but
* getting an MMU dump for another class of machine. The classes of machines
* MMU_PRINT: There is a routine built into head.S that can display the
* MMU data structures. It outputs its result through the serial_putc
* interface. So where ever that winds up driving data, that's where the
- * mmu struct will appear. On the Macintosh that's typically the console.
+ * mmu struct will appear.
*
* SERIAL_DEBUG: There are a series of putc() macro statements
* scattered through out the code to give progress of status to the
* USE_MFP: Use the ST-MFP port (Modem1) for serial debug.
*
* Macintosh constants:
- * MAC_USE_SCC_A: Use SCC port A (modem) for serial debug and early console.
- * MAC_USE_SCC_B: Use SCC port B (printer) for serial debug and early console.
+ * MAC_USE_SCC_A: Use SCC port A (modem) for serial debug.
+ * MAC_USE_SCC_B: Use SCC port B (printer) for serial debug.
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/bootinfo.h>
+#include <asm/bootinfo-amiga.h>
+#include <asm/bootinfo-atari.h>
+#include <asm/bootinfo-hp300.h>
+#include <asm/bootinfo-mac.h>
+#include <asm/bootinfo-q40.h>
+#include <asm/bootinfo-vme.h>
#include <asm/setup.h>
#include <asm/entry.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/asm-offsets.h>
-
#ifdef CONFIG_MAC
-
-#include <asm/machw.h>
-
-#ifdef CONFIG_FRAMEBUFFER_CONSOLE
-#define CONSOLE
-#define CONSOLE_PENGUIN
+# include <asm/machw.h>
#endif
#ifdef CONFIG_EARLY_PRINTK
-#define SERIAL_DEBUG
-#else
-#undef SERIAL_DEBUG
+# define SERIAL_DEBUG
+# if defined(CONFIG_MAC) && defined(CONFIG_FONT_SUPPORT)
+# define CONSOLE_DEBUG
+# endif
#endif
-#else /* !CONFIG_MAC */
-
-#define SERIAL_DEBUG
-
-#endif /* !CONFIG_MAC */
-
#undef MMU_PRINT
#undef MMU_NOCACHE_KERNEL
#undef DEBUG
.globl kernel_pg_dir
.globl availmem
+.globl m68k_init_mapped_size
.globl m68k_pgtable_cachemode
.globl m68k_supervisor_cachemode
#ifdef CONFIG_MVME16x
func_define console_putc,1
func_define console_init
-func_define console_put_stats
func_define console_put_penguin
func_define console_plot_pixel,3
func_define console_scroll
.macro putc ch
-#if defined(CONSOLE) || defined(SERIAL_DEBUG)
+#if defined(CONSOLE_DEBUG) || defined(SERIAL_DEBUG)
pea \ch
#endif
-#ifdef CONSOLE
+#ifdef CONSOLE_DEBUG
func_call console_putc
#endif
#ifdef SERIAL_DEBUG
func_call serial_putc
#endif
-#if defined(CONSOLE) || defined(SERIAL_DEBUG)
+#if defined(CONSOLE_DEBUG) || defined(SERIAL_DEBUG)
addql #4,%sp
#endif
.endm
.endm
.macro puts string
-#if defined(CONSOLE) || defined(SERIAL_DEBUG)
+#if defined(CONSOLE_DEBUG) || defined(SERIAL_DEBUG)
__INITDATA
.Lstr\@:
.string "\string"
lea %pc@(L(mac_rowbytes)),%a1
movel %a0@,%a1@
-#ifdef SERIAL_DEBUG
get_bi_record BI_MAC_SCCBASE
lea %pc@(L(mac_sccbase)),%a1
movel %a0@,%a1@
-#endif
-
-#if 0
- /*
- * Clear the screen
- */
- lea %pc@(L(mac_videobase)),%a0
- movel %a0@,%a1
- lea %pc@(L(mac_dimensions)),%a0
- movel %a0@,%d1
- swap %d1 /* #rows is high bytes */
- andl #0xFFFF,%d1 /* rows */
- subl #10,%d1
- lea %pc@(L(mac_rowbytes)),%a0
-loopy2:
- movel %a0@,%d0
- subql #1,%d0
-loopx2:
- moveb #0x55, %a1@+
- dbra %d0,loopx2
- dbra %d1,loopy2
-#endif
L(test_notmac):
#endif /* CONFIG_MAC */
*/
#ifdef CONFIG_MAC
is_not_mac(L(nocon))
-#ifdef CONSOLE
+# ifdef CONSOLE_DEBUG
console_init
-#ifdef CONSOLE_PENGUIN
+# ifdef CONFIG_LOGO
console_put_penguin
-#endif /* CONSOLE_PENGUIN */
- console_put_stats
-#endif /* CONSOLE */
+# endif /* CONFIG_LOGO */
+# endif /* CONSOLE_DEBUG */
L(nocon):
-#endif /* CONFIG_MAC */
+#endif /* CONFIG_MAC */
putc '\n'
*
* This block of code does what's necessary to map in the various kinds
* of machines for execution of Linux.
- * First map the first 4 MB of kernel code & data
+ * First map the first 4, 8, or 16 MB of kernel code & data
*/
- mmu_map #PAGE_OFFSET,%pc@(L(phys_kernel_start)),#4*1024*1024,\
+ get_bi_record BI_MEMCHUNK
+ movel %a0@(4),%d0
+ movel #16*1024*1024,%d1
+ cmpl %d0,%d1
+ jls 1f
+ lsrl #1,%d1
+ cmpl %d0,%d1
+ jls 1f
+ lsrl #1,%d1
+1:
+ lea %pc@(m68k_init_mapped_size),%a0
+ movel %d1,%a0@
+ mmu_map #PAGE_OFFSET,%pc@(L(phys_kernel_start)),%d1,\
%pc@(m68k_supervisor_cachemode)
putc 'C'
andl L(mac_videobase),%d0
addl #VIDEOMEMBASE,%d0
movel %d0,L(mac_videobase)
-#if defined(CONSOLE)
+#ifdef CONSOLE_DEBUG
movel %pc@(L(phys_kernel_start)),%d0
subl #PAGE_OFFSET,%d0
subl %d0,L(console_font)
subl %d0,L(console_font_data)
#endif
-#ifdef SERIAL_DEBUG
orl #0x50000000,L(mac_sccbase)
-#endif
1:
#endif
/*
* Find a tag record in the bootinfo structure
- * The bootinfo structure is located right after the kernel bss
+ * The bootinfo structure is located right after the kernel
* Returns: d0: size (-1 if not found)
* a0: data pointer (end-of-records if not found)
*/
*/
#ifdef CONFIG_MAC
+/* You may define either or both of these. */
+#define MAC_USE_SCC_A /* Modem port */
+#define MAC_USE_SCC_B /* Printer port */
+#if defined(MAC_USE_SCC_A) || defined(MAC_USE_SCC_B)
+/* Initialisation table for SCC with 3.6864 MHz PCLK */
L(scc_initable_mac):
.byte 4,0x44 /* x16, 1 stopbit, no parity */
.byte 3,0xc0 /* receiver: 8 bpc */
.byte -1
.even
#endif
+#endif /* CONFIG_MAC */
#ifdef CONFIG_ATARI
/* #define USE_PRINTER */
#define USE_MFP
#if defined(USE_SCC_A) || defined(USE_SCC_B)
-#define USE_SCC
-/* Initialisation table for SCC */
-L(scc_initable):
- .byte 9,12 /* Reset */
+/* Initialisation table for SCC with 7.9872 MHz PCLK */
+/* PCLK == 8.0539 gives baud == 9680.1 */
+L(scc_initable_atari):
.byte 4,0x44 /* x16, 1 stopbit, no parity */
.byte 3,0xc0 /* receiver: 8 bpc */
.byte 5,0xe2 /* transmitter: 8 bpc, assert dtr/rts */
- .byte 9,0 /* no interrupts */
.byte 10,0 /* NRZ */
.byte 11,0x50 /* use baud rate generator */
.byte 12,24,13,0 /* 9600 baud */
*/
/*
- * Initialize serial port hardware for 9600/8/1
+ * Initialize serial port hardware
*/
func_start serial_init,%d0/%d1/%a0/%a1
/*
* d0 = boot info offset
* CONFIG_ATARI
* a0 = address of SCC
- * a1 = Liobase address/address of scc_initable
+ * a1 = Liobase address/address of scc_initable_atari
* d0 = init data for serial port
* CONFIG_MAC
* a0 = address of SCC
| movew #61,CUSTOMBASE+C_SERPER-ZTWOBASE
1:
#endif
+
#ifdef CONFIG_ATARI
is_not_atari(4f)
movel %pc@(L(iobase)),%a1
moveb %a1@(LPSG_READ),%d0
bset #5,%d0
moveb %d0,%a1@(LPSG_WRITE)
-#elif defined(USE_SCC)
+#elif defined(USE_SCC_A) || defined(USE_SCC_B)
lea %a1@(LSCC_CTRL),%a0
- lea %pc@(L(scc_initable)),%a1
+ /* Reset SCC register pointer */
+ moveb %a0@,%d0
+ /* Reset SCC device: write register pointer then register value */
+ moveb #9,%a0@
+ moveb #0xc0,%a0@
+ /* Wait for 5 PCLK cycles, which is about 63 CPU cycles */
+ /* 5 / 7.9872 MHz = approx. 0.63 us = 63 / 100 MHz */
+ movel #32,%d0
+2:
+ subq #1,%d0
+ jne 2b
+ /* Initialize channel */
+ lea %pc@(L(scc_initable_atari)),%a1
2: moveb %a1@+,%d0
jmi 3f
moveb %d0,%a0@
jra L(serial_init_done)
4:
#endif
+
#ifdef CONFIG_MAC
is_not_mac(L(serial_init_not_mac))
-
-#ifdef SERIAL_DEBUG
-
-/* You may define either or both of these. */
-#define MAC_USE_SCC_A /* Modem port */
-#define MAC_USE_SCC_B /* Printer port */
-
+#if defined(MAC_USE_SCC_A) || defined(MAC_USE_SCC_B)
#define mac_scc_cha_b_ctrl_offset 0x0
#define mac_scc_cha_a_ctrl_offset 0x2
#define mac_scc_cha_b_data_offset 0x4
#define mac_scc_cha_a_data_offset 0x6
-
-#if defined(MAC_USE_SCC_A) || defined(MAC_USE_SCC_B)
movel %pc@(L(mac_sccbase)),%a0
- /* Reset SCC device */
+ /* Reset SCC register pointer */
+ moveb %a0@(mac_scc_cha_a_ctrl_offset),%d0
+ /* Reset SCC device: write register pointer then register value */
moveb #9,%a0@(mac_scc_cha_a_ctrl_offset)
moveb #0xc0,%a0@(mac_scc_cha_a_ctrl_offset)
/* Wait for 5 PCLK cycles, which is about 68 CPU cycles */
subq #1,%d0
jne 5b
#endif
-
#ifdef MAC_USE_SCC_A
/* Initialize channel A */
lea %pc@(L(scc_initable_mac)),%a1
jra 5b
6:
#endif /* MAC_USE_SCC_A */
-
#ifdef MAC_USE_SCC_B
/* Initialize channel B */
lea %pc@(L(scc_initable_mac)),%a1
jra 7b
8:
#endif /* MAC_USE_SCC_B */
-
-#endif /* SERIAL_DEBUG */
-
jra L(serial_init_done)
L(serial_init_not_mac):
#endif /* CONFIG_MAC */
2:
#endif
+#ifdef CONFIG_MVME16x
+ is_not_mvme16x(L(serial_init_not_mvme16x))
+ moveb #0x10,M167_PCSCCMICR
+ moveb #0x10,M167_PCSCCTICR
+ moveb #0x10,M167_PCSCCRICR
+ jra L(serial_init_done)
+L(serial_init_not_mvme16x):
+#endif
+
#ifdef CONFIG_APOLLO
/* We count on the PROM initializing SIO1 */
#endif
#ifdef CONFIG_MAC
is_not_mac(5f)
-
-#ifdef SERIAL_DEBUG
-
#if defined(MAC_USE_SCC_A) || defined(MAC_USE_SCC_B)
movel %pc@(L(mac_sccbase)),%a1
#endif
-
#ifdef MAC_USE_SCC_A
3: btst #2,%a1@(mac_scc_cha_a_ctrl_offset)
jeq 3b
moveb %d0,%a1@(mac_scc_cha_a_data_offset)
#endif /* MAC_USE_SCC_A */
-
#ifdef MAC_USE_SCC_B
4: btst #2,%a1@(mac_scc_cha_b_ctrl_offset)
jeq 4b
moveb %d0,%a1@(mac_scc_cha_b_data_offset)
#endif /* MAC_USE_SCC_B */
-
-#endif /* SERIAL_DEBUG */
-
jra L(serial_putc_done)
5:
#endif /* CONFIG_MAC */
nop
bset #5,%d0
moveb %d0,%a1@(LPSG_WRITE)
-#elif defined(USE_SCC)
+#elif defined(USE_SCC_A) || defined(USE_SCC_B)
3: btst #2,%a1@(LSCC_CTRL)
jeq 3b
moveb %d0,%a1@(LSCC_DATA)
movel ARG1,%a0
jra 2f
1:
-#ifdef CONSOLE
+#ifdef CONSOLE_DEBUG
console_putc %d0
#endif
#ifdef SERIAL_DEBUG
jls 2f
addb #'A'-('9'+1),%d2
2:
-#ifdef CONSOLE
+#ifdef CONSOLE_DEBUG
console_putc %d2
#endif
#ifdef SERIAL_DEBUG
func_return putn
-#ifdef CONFIG_MAC
+#ifdef CONFIG_EARLY_PRINTK
/*
- * mac_early_print
- *
* This routine takes its parameters on the stack. It then
* turns around and calls the internal routines. This routine
* is used by the boot console.
*
* The calling parameters are:
- * void mac_early_print(const char *str, unsigned length);
+ * void debug_cons_nputs(const char *str, unsigned length)
*
* This routine does NOT understand variable arguments only
* simple strings!
*/
-ENTRY(mac_early_print)
+ENTRY(debug_cons_nputs)
moveml %d0/%d1/%a0,%sp@-
movew %sr,%sp@-
ori #0x0700,%sr
movel %sp@(22),%d1 /* fetch parameter */
jra 2f
1:
-#ifdef CONSOLE
+#ifdef CONSOLE_DEBUG
console_putc %d0
#endif
#ifdef SERIAL_DEBUG
movew %sp@+,%sr
moveml %sp@+,%d0/%d1/%a0
rts
-#endif /* CONFIG_MAC */
+#endif /* CONFIG_EARLY_PRINTK */
#if defined(CONFIG_HP300) || defined(CONFIG_APOLLO)
func_start set_leds,%d0/%a0
func_return set_leds
#endif
-#ifdef CONSOLE
+#ifdef CONSOLE_DEBUG
/*
* For continuity, see the data alignment
* to which this structure is tied.
#define Lconsole_struct_num_columns 8
#define Lconsole_struct_num_rows 12
#define Lconsole_struct_left_edge 16
-#define Lconsole_struct_penguin_putc 20
func_start console_init,%a0-%a4/%d0-%d7
/*
* Some of the register usage that follows
* a0 = pointer to boot_info
* a1 = pointer to screen
- * a2 = pointer to Lconsole_globals
+ * a2 = pointer to console_globals
* d3 = pixel width of screen
* d4 = pixel height of screen
* (d3,d4) ~= (x,y) of a point just below
1:
func_return console_init
-func_start console_put_stats,%a0/%d7
- /*
- * Some of the register usage that follows
- * a0 = pointer to boot_info
- * d7 = value of boot_info fields
- */
- puts "\nMacLinux\n"
-
-#ifdef SERIAL_DEBUG
- puts "\n vidaddr:"
- putn %pc@(L(mac_videobase)) /* video addr. */
-
- puts "\n _stext:"
- lea %pc@(_stext),%a0
- putn %a0
-
- puts "\nbootinfo:"
- lea %pc@(_end),%a0
- putn %a0
-
- puts "\n cpuid:"
- putn %pc@(L(cputype))
-
-# ifdef CONFIG_MAC
- puts "\n sccbase:"
- putn %pc@(L(mac_sccbase))
-# endif
-# ifdef MMU_PRINT
- putc '\n'
- jbsr mmu_print_machine_cpu_types
-# endif
-#endif /* SERIAL_DEBUG */
-
- putc '\n'
-
-func_return console_put_stats
-
-#ifdef CONSOLE_PENGUIN
+#ifdef CONFIG_LOGO
func_start console_put_penguin,%a0-%a1/%d0-%d7
/*
* Get 'that_penguin' onto the screen in the upper right corner
L(console_plot_pixel_exit):
func_return console_plot_pixel
-#endif /* CONSOLE */
-
-#if 0
-/*
- * This is some old code lying around. I don't believe
- * it's used or important anymore. My guess is it contributed
- * to getting to this point, but it's done for now.
- * It was still in the 2.1.77 head.S, so it's still here.
- * (And still not used!)
- */
-L(showtest):
- moveml %a0/%d7,%sp@-
- puts "A="
- putn %a1
+#endif /* CONSOLE_DEBUG */
- .long 0xf0119f15 | ptestr #5,%a1@,#7,%a0
-
- puts "DA="
- putn %a0
-
- puts "D="
- putn %a0@
-
- puts "S="
- lea %pc@(L(mmu)),%a0
- .long 0xf0106200 | pmove %psr,%a0@
- clrl %d7
- movew %a0@,%d7
- putn %d7
-
- putc '\n'
- moveml %sp@+,%a0/%d7
- rts
-#endif /* 0 */
__INITDATA
.align 4
+m68k_init_mapped_size:
+ .long 0
+
#if defined(CONFIG_ATARI) || defined(CONFIG_AMIGA) || \
defined(CONFIG_HP300) || defined(CONFIG_APOLLO)
L(custom):
.long 0
#endif
-#if defined(CONSOLE)
+#ifdef CONSOLE_DEBUG
L(console_globals):
.long 0 /* cursor column */
.long 0 /* cursor row */
.long 0 /* max num columns */
.long 0 /* max num rows */
.long 0 /* left edge */
- .long 0 /* mac putc */
L(console_font):
.long 0 /* pointer to console font (struct font_desc) */
L(console_font_data):
.long 0 /* pointer to console font data */
-#endif /* CONSOLE */
+#endif /* CONSOLE_DEBUG */
#if defined(MMU_PRINT)
L(mmu_print_data):
M167_CYLICR = 0xfff45026
M167_CYTEOIR = 0xfff45085
M167_CYTDR = 0xfff450f8
+M167_PCSCCMICR = 0xfff4201d
M167_PCSCCTICR = 0xfff4201e
+M167_PCSCCRICR = 0xfff4201f
M167_PCTPIACKR = 0xfff42025
#endif
#endif
#if defined(CONFIG_MAC)
-L(mac_booter_data):
- .long 0
L(mac_videobase):
.long 0
L(mac_videodepth):
.long 0
L(mac_rowbytes):
.long 0
-#ifdef SERIAL_DEBUG
L(mac_sccbase):
.long 0
-#endif
#endif /* CONFIG_MAC */
#if defined (CONFIG_APOLLO)
projects / firefly-linux-kernel-4.4.55.git / blobdiff