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/* Linux SPARC/UltraSPARC Loader Bootstrap
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Copyright (C) 1996,1997,1998,2000 Jakub Jelinek
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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#define COPY jmpl %o7 + (copy - _start), %l7
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.global silo_conf, silo_conf_part, boot_part
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.global raid_dsk_number, silo_conf_parts, boot_parts
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.byte 'L' ! This is for the primary loader to check if we are ok... :)
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1: /* First store %l3 to raid_dsk_number */
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stb %l3, [%l0 + (raid_dsk_number - _start)]
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/* Move ourselves up - there are three chunks to move. */
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sethi %hi(0x100000), %i3
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1: set main_text_start, %l3
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set main_rodata_start, %l3
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set main_text_end, %l4
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set main_data_start, %l3
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set main_rodata_end, %l4
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set __bss_start + 16, %i1
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set main_data_end, %l4
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sethi %hi(gzminpi), %l1
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st %l0, [%l1 + %lo(gzminpi)]
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/* Jump to relocated code */
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jmpl %i0 + (jumphere - _start), %g0
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or %l0, %lo(_end), %l0 ! %l0 = _end
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sub %l0, %i1, %i2 ! %i2 = BSS length
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tst %o4 ! if not Ultra,
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be 1f ! skip %pstate modification
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sethi %hi(gzminpi+0x100000), %l0
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ld [%l0 + %lo(gzminpi)], %l1
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sethi %hi(LARGE_RELOC), %l2
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2: sethi %hi(LARGE_RELOC), %l2
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4: st %l1, [%l0 + %lo(gzminpi)]
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! Call my_main() to start the whole thingie up
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mov %i6, %o2 ! Cif sp on sun4u
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mov %i4, %o1 ! Cif handler on sun4u
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mov %i0, %o0 ! Prom vector or cifh on sun4m
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jmpl %o0 + %g0, %g0 ! Jump to return address from my_main()
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/* l0 from, l1 to, l2 len, l7 ret. Returns from + len in l0 */
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tst %i4 /* quit unless it's Sun4u */
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/* Careful, we cannot read the %ver register on sun4v because
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* there that register is hyperprivileged and we are executing
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* in privileged mode.
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* This early on it's difficult to portably detect sun4v as
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* that requires OBP calls. So do this super-ugly trick of
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* trying to set the PSTATE_AG bit in %pstate which will read
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* back as zero on sun4u.
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srlx %l0, (32 + 16), %l1
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srlx %l0, (32 + 16), %l1
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bgeu,pt %xcc, 0f /* quit if Ultra-III or derivative */
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sethi %hi(0x40003), %l1
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or %l1, %lo(0x40003), %l1
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be 0f /* quit if HAL SPARC64-III */
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sethi %hi(0x40004), %l1
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or %l1, %lo(0x40004), %l1
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be 0f /* quit if HAL SPARC64-IV */
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sethi %hi(16384), %l1
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stxa %g0, [%l0] 0x67 /* ASI_IC_TAG */
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stxa %g0, [%l0] 0x67 /* ASI_IC_TAG */
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removed
second/crt0.S
