** 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)
-** 2004/05/13 Kars de Jong: Finalised HP300 support
**
** This file is subject to the terms and conditions of the GNU General Public
** License. See the file README.legal in the main directory of this archive
#ifdef CONFIG_Q40
.globl q40_mem_cptr
#endif
+#ifdef CONFIG_HP300
+.globl hp300_phys_ram_base
+#endif
CPUTYPE_040 = 1 /* indicates an 040 */
CPUTYPE_060 = 2 /* indicates an 060 */
func_define mmu_get_page_table_entry,2
func_define mmu_print
func_define get_new_page
-#if defined(CONFIG_HP300) || defined(CONFIG_APOLLO)
+#ifdef CONFIG_HP300
func_define set_leds
#endif
.long MACH_BVME6000, BVME6000_BOOTI_VERSION
.long MACH_MAC, MAC_BOOTI_VERSION
.long MACH_Q40, Q40_BOOTI_VERSION
- .long MACH_HP300, HP300_BOOTI_VERSION
.long 0
1: jra __start
jra __start
__INIT
ENTRY(__start)
+
+#ifdef CONFIG_HP300
+/* This is a hack. The HP NetBSD bootloader loads us at an arbitrary
+ address (apparently 0xff002000 in practice) which is not good if we need
+ to be able to map this to VA 0x1000. We could do it with pagetables but
+ a better solution seems to be to relocate the kernel in physical memory
+ before we start.
+
+ So, we copy the entire kernel image (code+data+bss) down to the 16MB
+ boundary that marks the start of RAM. This is slightly tricky because
+ we must not overwrite the copying code itself. :-) */
+
+/* 15/5/98. The start address of physical RAM changes depending on how much
+ RAM is present. This is actually a blessing in disguise as it provides
+ a way for us to work out the RAM size rather than hardwiring it. */
+
+ lea %pc@(_start),%a0
+ movel %a0,%d6
+ and #0xffff0000, %d6
+ lea %pc@(hp300_phys_ram_base),%a0
+ movel %d6, %a0@
+ movel %pc@(L(custom)),%a3
+ moveb #0xfe,%d7
+ moveb %d7,%a3@(0x1ffff)
+ lea %pc@(Lcopystart),%a0
+ lea %pc@(Lcopyend),%a1
+ movel %d6,%a2 /* Start of physical RAM */
+1: moveb %a0@+,%d0
+ moveb %d0,%a2@+
+ cmpl %a0,%a1
+ jbne 1b
+ movel %d6,%a2
+ moveb #0xfd,%d7
+ moveb %d7,%a3@(0x1ffff)
+ lea %pc@(_stext),%a0
+ lea %pc@(_end),%a1
+ jmp %a2@
+
+Lcopystart:
+ moveb #0xf7,%d7
+ moveb %d7,%a3@(0x1ffff)
+ movel %d6,%a2 /* Start of kernel */
+ add #0x1000,%a2
+1: moveb %a0@+,%d0
+ moveb %d0,%a2@+
+ cmpl %a0,%a1
+ jbne 1b
+ moveb #0,%d7
+ moveb %d7,%a3@(0x1ffff)
+ movel %d6,%a0
+ addl #Lstart1,%a0
+ jmp %a0@
+Lcopyend:
+
+Lstart1:
+ moveb #0x3f,%d7
+ moveb %d7,%a3@(0x1ffff)
+#endif /* CONFIG_HP300 */
+
/*
* Setup initial stack pointer
*/
/*
* Record the CPU and machine type.
*/
+
+#ifndef CONFIG_HP300
get_bi_record BI_MACHTYPE
lea %pc@(m68k_machtype),%a1
movel %a0@,%a1@
get_bi_record BI_CPUTYPE
lea %pc@(m68k_cputype),%a1
movel %a0@,%a1@
+#else /* CONFIG_HP300 */
+ /* FIXME HP300 doesn't use bootinfo yet */
+ movel #MACH_HP300,%d4
+ lea %pc@(m68k_machtype),%a0
+ movel %d4,%a0@
+ movel #FPU_68881,%d0
+ lea %pc@(m68k_fputype),%a0
+ movel %d0,%a0@
+ movel #MMU_68030,%d0
+ lea %pc@(m68k_mmutype),%a0
+ movel %d0,%a0@
+ movel #CPU_68030,%d0
+ lea %pc@(m68k_cputype),%a0
+ movel %d0,%a0@
- leds 0x1
+ leds(0x1)
+#endif /* CONFIG_HP300 */
#ifdef CONFIG_MAC
/*
#endif
-#ifdef CONFIG_HP300
- is_not_hp300(L(nothp))
-
- /* Get the address of the UART for serial debugging */
- get_bi_record BI_HP300_UART_ADDR
- tstl %d0
- jbmi 1f
- movel %a0@,%d3
- lea %pc@(L(uartbase)),%a0
- movel %d3,%a0@
- get_bi_record BI_HP300_UART_SCODE
- tstl %d0
- jbmi 1f
- movel %a0@,%d3
- lea %pc@(L(uart_scode)),%a0
- movel %d3,%a0@
-1:
-L(nothp):
-#endif
-
/*
* Initialize serial port
*/
putc '\n'
putc 'A'
- leds 0x2
+#ifdef CONFIG_HP300
+ leds(0x2)
+#endif /* CONFIG_HP300 */
dputn %pc@(L(cputype))
dputn %pc@(m68k_supervisor_cachemode)
dputn %pc@(m68k_pgtable_cachemode)
#ifdef CONFIG_HP300
is_not_hp300(L(nothp300))
- /* On the HP300, we map the ROM, INTIO and DIO regions (phys. 0x00xxxxxx)
- * by mapping 32MB (on 020/030) or 16 MB (on 040) from 0xf0xxxxxx -> 0x00xxxxxx).
- * The ROM mapping is needed because the LEDs are mapped there too.
- */
+/* On the HP300, we map the ROM, INTIO and DIO regions (phys. 0x00xxxxxx)
+ by mapping 32MB from 0xf0xxxxxx -> 0x00xxxxxx) using an 030 early
+ termination page descriptor. The ROM mapping is needed because the LEDs
+ are mapped there too. */
- is_040(1f)
-
- /*
- * 030: Map the 32Meg range physical 0x0 upto logical 0xf000.0000
- */
mmu_map #0xf0000000,#0,#0x02000000,#_PAGE_NOCACHE030
- jbra L(mmu_init_done)
-
-1:
- /*
- * 040: Map the 16Meg range physical 0x0 upto logical 0xf000.0000
- */
- mmu_map #0xf0000000,#0,#0x01000000,#_PAGE_NOCACHE_S
-
- jbra L(mmu_init_done)
-
L(nothp300):
-#endif /* CONFIG_HP300 */
+
+#endif
#ifdef CONFIG_MVME147
#ifdef CONFIG_HP300
is_not_hp300(1f)
/*
- * Fix up the iobase register to point to the new location of the LEDs.
+ * Fix up the custom register to point to the new location of the LEDs.
*/
- movel #0xf0000000,L(iobase)
+ movel #0xf0000000,L(custom)
/*
* Energise the FPU and caches.
*/
- is_040(1f)
movel #0x60,0xf05f400c
- jbra 2f
-
- /*
- * 040: slightly different, apparently.
- */
-1: movew #0,0xf05f400e
- movew #0x64,0xf05f400e
-2:
+1:
#endif
#ifdef CONFIG_SUN3X
movel ARG1,%d0
lea %pc@(_end),%a0
+#ifndef CONFIG_HP300
1: tstw %a0@(BIR_TAG)
jeq 3f
cmpw %a0@(BIR_TAG),%d0
3: moveq #-1,%d0
lea %a0@(BIR_SIZE),%a0
4:
+#endif /* CONFIG_HP300 */
func_return get_bi_record
/* We count on the PROM initializing SIO1 */
#endif
-#ifdef CONFIG_HP300
-/* We count on the boot loader initialising the UART */
-#endif
-
L(serial_init_done):
func_return serial_init
1: moveb %a1@(LSRB0),%d0
andb #0x4,%d0
beq 1b
- jbra L(serial_putc_done)
2:
#endif
-#ifdef CONFIG_HP300
- is_not_hp300(3f)
- movl %pc@(L(iobase)),%a1
- addl %pc@(L(uartbase)),%a1
- movel %pc@(L(uart_scode)),%d1 /* Check the scode */
- jmi 3f /* Unset? Exit */
- cmpi #256,%d1 /* APCI scode? */
- jeq 2f
-1: moveb %a1@(DCALSR),%d1 /* Output to DCA */
- andb #0x20,%d1
- beq 1b
- moveb %d0,%a1@(DCADATA)
- jbra L(serial_putc_done)
-2: moveb %a1@(APCILSR),%d1 /* Output to APCI */
- andb #0x20,%d1
- beq 2b
- moveb %d0,%a1@(APCIDATA)
- jbra L(serial_putc_done)
-3:
-#endif
-
L(serial_putc_done):
func_return serial_putc
movel ARG1,%d0
#ifdef CONFIG_HP300
is_not_hp300(1f)
- movel %pc@(L(iobase)),%a0
+ movel %pc@(L(custom)),%a0
moveb %d0,%a0@(0x1ffff)
jra 2f
#endif
__INITDATA
.align 4
+#ifdef CONFIG_HP300
+hp300_phys_ram_base:
+#endif
+
#if defined(CONFIG_ATARI) || defined(CONFIG_AMIGA) || \
defined(CONFIG_HP300) || defined(CONFIG_APOLLO)
L(custom):
LCPUCTRL = 0x10100
#endif
-#if defined(CONFIG_HP300)
-DCADATA = 0x11
-DCALSR = 0x1b
-APCIDATA = 0x00
-APCILSR = 0x14
-L(uartbase):
- .long 0
-L(uart_scode):
- .long -1
-#endif
-
__FINIT
.data
.align 4
git://git.onelab.eu / linux-2.6.git / blobdiff