Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
68 lines
1.2 KiB
ArmAsm
68 lines
1.2 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (c) 2016 IBM Corporation.
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*/
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#include "ppc_asm.h"
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#include "../include/asm/opal-api.h"
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.text
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.globl opal_kentry
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opal_kentry:
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/* r3 is the fdt ptr */
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mtctr r4
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li r4, 0
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li r5, 0
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li r6, 0
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li r7, 0
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LOAD_REG_ADDR(r11, opal)
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ld r8,0(r11)
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ld r9,8(r11)
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bctr
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#define OPAL_CALL(name, token) \
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.globl name; \
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name: \
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li r0, token; \
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b opal_call;
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opal_call:
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mflr r11
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std r11,16(r1)
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mfcr r12
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stw r12,8(r1)
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mr r13,r2
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/* Set opal return address */
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LOAD_REG_ADDR(r11, opal_return)
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mtlr r11
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mfmsr r12
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/* switch to BE when we enter OPAL */
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li r11,MSR_LE
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andc r12,r12,r11
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mtspr SPRN_HSRR1,r12
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/* load the opal call entry point and base */
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LOAD_REG_ADDR(r11, opal)
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ld r12,8(r11)
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ld r2,0(r11)
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mtspr SPRN_HSRR0,r12
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hrfid
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opal_return:
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FIXUP_ENDIAN
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mr r2,r13;
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lwz r11,8(r1);
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ld r12,16(r1)
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mtcr r11;
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mtlr r12
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blr
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OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE);
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OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ);
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OPAL_CALL(opal_console_write_buffer_space, OPAL_CONSOLE_WRITE_BUFFER_SPACE);
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OPAL_CALL(opal_poll_events, OPAL_POLL_EVENTS);
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OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH);
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