architecture/powerpc64/package/linux/0260-udbg-lv1-console.patch

   1 # --- T2-COPYRIGHT-NOTE-BEGIN ---
   2 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
   3 #
   4 # T2 SDE: architecture/powerpc64/package/.../0260-udbg-lv1-console.patch
   5 # Copyright (C) 2019 The T2 SDE Project
   6 #
   7 # More information can be found in the files COPYING and README.
   8 #
   9 # This patch file is dual-licensed. It is available under the license the
  10 # patched project is licensed under, as long as it is an OpenSource license
  11 # as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
  12 # of the GNU General Public License as published by the Free Software
  13 # Foundation; either version 2 of the License, or (at your option) any later
  14 # version.
  15 # --- T2-COPYRIGHT-NOTE-END ---
  16
  17 --- a/arch/powerpc/platforms/ps3/Kconfig
  18 +++ b/arch/powerpc/platforms/ps3/Kconfig
  19 @@ -237,4 +237,12 @@ config PS3GELIC_UDBG
  20
  21           If in doubt, say N here.
  22
  23 +config PS3_LV1_CONS_UDBG
  24 +       bool "PS3 udbg output via LV1 console"
  25 +       depends on PPC_PS3
  26 +       help
  27 +         Enables udbg early debugging output to LV1 console.
  28 +
  29 +         If in doubt, say N here.
  30 +
  31  endmenu
  32 --- a/arch/powerpc/platforms/ps3/Makefile
  33 +++ b/arch/powerpc/platforms/ps3/Makefile
  34 @@ -4,6 +4,7 @@ obj-y += interrupt.o exports.o os-area.o
  35  obj-y += system-bus.o
  36
  37  obj-$(CONFIG_PS3GELIC_UDBG) += gelic_udbg.o
  38 +obj-$(CONFIG_PS3_LV1_CONS_UDBG) += lv1_cons_udbg.o
  39  obj-$(CONFIG_SMP) += smp.o
  40  obj-$(CONFIG_SPU_BASE) += spu.o
  41  obj-y += device-init.o
  42 --- /dev/null
  43 +++ b/arch/powerpc/platforms/ps3/lv1_cons_udbg.c
  44 @@ -0,0 +1,57 @@
  45 +/*
  46 + * PS3 LV1 Debug Console
  47 + *
  48 + * Copyright (C) 2013 glevand <geoffrey.levand@mail.ru>
  49 + * All rights reserved.
  50 + *
  51 + * This program is free software; you can redistribute it and/or modify it
  52 + * under the terms of the GNU General Public License as published
  53 + * by the Free Software Foundation; version 2 of the License.
  54 + *
  55 + * This program is distributed in the hope that it will be useful, but
  56 + * WITHOUT ANY WARRANTY; without even the implied warranty of
  57 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  58 + * General Public License for more details.
  59 + *
  60 + * You should have received a copy of the GNU General Public License along
  61 + * with this program; if not, write to the Free Software Foundation, Inc.,
  62 + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  63 + */
  64 +
  65 +#include <asm/io.h>
  66 +#include <asm/udbg.h>
  67 +#include <asm/lv1call.h>
  68 +
  69 +#define LV1_CONS_ID            1
  70 +#define LV1_CONS_LENGTH                0xff0
  71 +
  72 +static int initialized = 0;
  73 +
  74 +static void lv1_cons_udbg_putc(char ch)
  75 +{
  76 +       u64 data, written;
  77 +       int ret;
  78 +
  79 +       if (!initialized) {
  80 +               ret = lv1_undocumented_function_105(LV1_CONS_ID, 0, 0,
  81 +                       LV1_CONS_LENGTH, LV1_CONS_LENGTH, 0, 0);
  82 +               if ((ret != 0) && (ret != -7))
  83 +                       return;
  84 +
  85 +               initialized = 1;
  86 +       }
  87 +
  88 +       data = ch;
  89 +       data <<= 56;
  90 +
  91 +       lv1_undocumented_function_107(LV1_CONS_ID, 1, data, 0, 0, 0, &written);
  92 +
  93 +       /* flush to console buffer in LV1 */
  94 +
  95 +       lv1_undocumented_function_109(LV1_CONS_ID);
  96 +}
  97 +
  98 +void __init udbg_init_ps3_lv1_cons(void)
  99 +{
 100 +       udbg_putc = lv1_cons_udbg_putc;
 101 +}
 102 --- a/arch/powerpc/Kconfig.debug
 103 +++ b/arch/powerpc/Kconfig.debug
 104 @@ -256,6 +256,14 @@ config PPC_EARLY_DEBUG_PS3GELIC
 105           Select this to enable early debugging for the PlayStation3 via
 106           UDP broadcasts sent out through the Ethernet port.
 107
 108 +config PPC_EARLY_DEBUG_PS3_LV1_CONS
 109 +       bool "Early debugging through the PS3 LV1 console"
 110 +       depends on PPC_PS3
 111 +       select PS3_LV1_CONS_UDBG
 112 +       help
 113 +         Select this to enable early debugging for the PlayStation3 via
 114 +         LV1 debug console.
 115 +
 116  config PPC_EARLY_DEBUG_OPAL_RAW
 117         bool "OPAL raw console"
 118         depends on HVC_OPAL
 119 --- a/arch/powerpc/include/asm/udbg.h
 120 +++ b/arch/powerpc/include/asm/udbg.h
 121 @@ -51,6 +51,7 @@ extern void __init udbg_init_usbgecko(void);
 122  extern void __init udbg_init_memcons(void);
 123  extern void __init udbg_init_ehv_bc(void);
 124  extern void __init udbg_init_ps3gelic(void);
 125 +extern void __init udbg_init_ps3_lv1_cons(void);
 126  extern void __init udbg_init_debug_opal_raw(void);
 127  extern void __init udbg_init_debug_opal_hvsi(void);
 128
 129 --- a/arch/powerpc/kernel/udbg.c
 130 +++ b/arch/powerpc/kernel/udbg.c
 131 @@ -63,6 +63,8 @@ void __init udbg_early_init(void)
 132         udbg_init_ehv_bc();
 133  #elif defined(CONFIG_PPC_EARLY_DEBUG_PS3GELIC)
 134         udbg_init_ps3gelic();
 135 +#elif defined(CONFIG_PPC_EARLY_DEBUG_PS3_LV1_CONS)
 136 +       udbg_init_ps3_lv1_cons();
 137  #elif defined(CONFIG_PPC_EARLY_DEBUG_OPAL_RAW)
 138         udbg_init_debug_opal_raw();
 139  #elif defined(CONFIG_PPC_EARLY_DEBUG_OPAL_HVSI)