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loader: pass args along to unix in C
There's no reason why we can't pass the args gotten from the bootloader to
unix in C.
Note: loader's _start sets the ATAG pointer to 0x100.  This change simply
propagates it to unix.
   1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11 
  12 /*
  13  * Copyright (c) 2014 Joyent, Inc.  All rights reserved.

  14  */
  15 
  16 #include "fakeloader.h"
  17 
  18 #include <sys/types.h>
  19 #include <sys/param.h>
  20 #include <sys/elf.h>
  21 #include <sys/atag.h>
  22 #include <sys/sysmacros.h>
  23 #include <sys/machparam.h>
  24 
  25 #include <vm/pte.h>
  26 
  27 /*
  28  * This is the stock ARM fake uniboot loader.
  29  *
  30  * Here's what we have to do:
  31  *   o Read the atag header and find the combined archive header
  32  *   o Determine the set of mappings we need to add for the following:
  33  *              - unix


 690         armv6_dcache_inval();
 691         armv6_icache_disable();
 692         armv6_icache_inval();
 693 
 694         /* Program the page tables */
 695         FAKELOAD_DPRINTF("programming cp15 regs\n");
 696         fakeload_pt_setup((uintptr_t)pt_addr);
 697 
 698 
 699         /* MMU Enable */
 700         FAKELOAD_DPRINTF("see you on the other side\n");
 701         fakeload_mmu_enable();
 702 
 703         FAKELOAD_DPRINTF("why helo thar\n");
 704 
 705         /* Renable caches */
 706         armv6_dcache_enable();
 707         armv6_icache_enable();
 708 
 709         /* we should never come back */
 710         fakeload_exec(unix_start);
 711         fakeload_panic("hit the end of the world\n");
 712 }

   1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11 
  12 /*
  13  * Copyright (c) 2014 Joyent, Inc.  All rights reserved.
  14  * Copyright (c) 2015 Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
  15  */
  16 
  17 #include "fakeloader.h"
  18 
  19 #include <sys/types.h>
  20 #include <sys/param.h>
  21 #include <sys/elf.h>
  22 #include <sys/atag.h>
  23 #include <sys/sysmacros.h>
  24 #include <sys/machparam.h>
  25 
  26 #include <vm/pte.h>
  27 
  28 /*
  29  * This is the stock ARM fake uniboot loader.
  30  *
  31  * Here's what we have to do:
  32  *   o Read the atag header and find the combined archive header
  33  *   o Determine the set of mappings we need to add for the following:
  34  *              - unix


 691         armv6_dcache_inval();
 692         armv6_icache_disable();
 693         armv6_icache_inval();
 694 
 695         /* Program the page tables */
 696         FAKELOAD_DPRINTF("programming cp15 regs\n");
 697         fakeload_pt_setup((uintptr_t)pt_addr);
 698 
 699 
 700         /* MMU Enable */
 701         FAKELOAD_DPRINTF("see you on the other side\n");
 702         fakeload_mmu_enable();
 703 
 704         FAKELOAD_DPRINTF("why helo thar\n");
 705 
 706         /* Renable caches */
 707         armv6_dcache_enable();
 708         armv6_icache_enable();
 709 
 710         /* we should never come back */
 711         fakeload_exec(ident, ident2, chain, unix_start);
 712         fakeload_panic("hit the end of the world\n");
 713 }