diff options
Diffstat (limited to 'grub-core/kern/arm/coreboot')
| -rw-r--r-- | grub-core/kern/arm/coreboot/cbtable.c | 40 | ||||
| -rw-r--r-- | grub-core/kern/arm/coreboot/coreboot.S | 44 | ||||
| -rw-r--r-- | grub-core/kern/arm/coreboot/dma.c | 59 | ||||
| -rw-r--r-- | grub-core/kern/arm/coreboot/init.c | 151 | ||||
| -rw-r--r-- | grub-core/kern/arm/coreboot/timer.c | 101 |
5 files changed, 395 insertions, 0 deletions
diff --git a/grub-core/kern/arm/coreboot/cbtable.c b/grub-core/kern/arm/coreboot/cbtable.c new file mode 100644 index 0000000..8a655bb --- /dev/null +++ b/grub-core/kern/arm/coreboot/cbtable.c @@ -0,0 +1,40 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2007,2008,2013 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/coreboot/lbio.h> +#include <grub/types.h> +#include <grub/err.h> +#include <grub/misc.h> +#include <grub/dl.h> +#include <grub/arm/startup.h> + +GRUB_MOD_LICENSE ("GPLv3+"); + +#pragma GCC diagnostic ignored "-Wcast-align" + +grub_linuxbios_table_header_t +grub_linuxbios_get_tables (void) +{ + grub_linuxbios_table_header_t table_header + = (grub_linuxbios_table_header_t) grub_arm_saved_registers.r[0]; + + if (!grub_linuxbios_check_signature (table_header)) + return 0; + + return table_header; +} diff --git a/grub-core/kern/arm/coreboot/coreboot.S b/grub-core/kern/arm/coreboot/coreboot.S new file mode 100644 index 0000000..a110452 --- /dev/null +++ b/grub-core/kern/arm/coreboot/coreboot.S @@ -0,0 +1,44 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2016 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/symbol.h> + + .file "coreboot.S" + .text + .syntax unified +#if !defined (__thumb2__) + .arch armv7a + .arm +#else + .arch armv7 + .thumb +#endif + +FUNCTION(grub_arm_pfr1) + mrc p15, 0, r0, c0, c1, 1 + bx lr + +FUNCTION(grub_armv7_get_timer_value) + isb + mrrc p15, 1, r0, r1, c14 + bx lr + +FUNCTION(grub_armv7_get_timer_frequency) + mrc p15, 0, r0, c14, c0, 0 + bx lr + diff --git a/grub-core/kern/arm/coreboot/dma.c b/grub-core/kern/arm/coreboot/dma.c new file mode 100644 index 0000000..2c2a627 --- /dev/null +++ b/grub-core/kern/arm/coreboot/dma.c @@ -0,0 +1,59 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2007,2009 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/dl.h> +#include <grub/dma.h> +#include <grub/mm.h> +#include <grub/misc.h> +#include <grub/mm_private.h> +#include <grub/cache.h> + +struct grub_pci_dma_chunk * +grub_memalign_dma32 (grub_size_t align, grub_size_t size) +{ + void *ret; + if (align < 64) + align = 64; + size = ALIGN_UP (size, align); + ret = grub_memalign (align, size); + if (!ret) + return 0; + grub_arch_sync_dma_caches (ret, size); + return ret; +} + +void +grub_dma_free (struct grub_pci_dma_chunk *ch) +{ + grub_size_t size = (((struct grub_mm_header *) ch) - 1)->size * GRUB_MM_ALIGN; + grub_arch_sync_dma_caches (ch, size); + grub_free (ch); +} + +volatile void * +grub_dma_get_virt (struct grub_pci_dma_chunk *ch) +{ + return (void *) ch; +} + +grub_uint32_t +grub_dma_get_phys (struct grub_pci_dma_chunk *ch) +{ + return (grub_uint32_t) (grub_addr_t) ch; +} + diff --git a/grub-core/kern/arm/coreboot/init.c b/grub-core/kern/arm/coreboot/init.c new file mode 100644 index 0000000..8d8c5b8 --- /dev/null +++ b/grub-core/kern/arm/coreboot/init.c @@ -0,0 +1,151 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2013 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/kernel.h> +#include <grub/mm.h> +#include <grub/memory.h> +#include <grub/machine/console.h> +#include <grub/machine/kernel.h> +#include <grub/offsets.h> +#include <grub/types.h> +#include <grub/err.h> +#include <grub/dl.h> +#include <grub/misc.h> +#include <grub/loader.h> +#include <grub/env.h> +#include <grub/cache.h> +#include <grub/time.h> +#include <grub/symbol.h> +#include <grub/video.h> +#include <grub/coreboot/lbio.h> +#include <grub/fdtbus.h> + +extern grub_uint8_t _start[]; +extern grub_uint8_t _end[]; +extern grub_uint8_t _edata[]; +grub_addr_t start_of_ram = ~(grub_addr_t)0; + +void __attribute__ ((noreturn)) +grub_exit (void) +{ + /* We can't use grub_fatal() in this function. This would create an infinite + loop, since grub_fatal() calls grub_abort() which in turn calls grub_exit(). */ + while (1) + grub_cpu_idle (); +} + +static grub_uint64_t modend; +static int have_memory = 0; + +/* Helper for grub_machine_init. */ +static int +heap_init (grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type, + void *data __attribute__ ((unused))) +{ + grub_uint64_t begin = addr, end = addr + size; + +#if GRUB_CPU_SIZEOF_VOID_P == 4 + /* Restrict ourselves to 32-bit memory space. */ + if (begin > GRUB_ULONG_MAX) + return 0; + if (end > GRUB_ULONG_MAX) + end = GRUB_ULONG_MAX; +#endif + + if (start_of_ram > begin) + start_of_ram = begin; + + if (type != GRUB_MEMORY_AVAILABLE) + return 0; + + if (modend && begin < modend) + { + if (begin < (grub_addr_t)_start) + { + grub_mm_init_region ((void *) (grub_addr_t) begin, (grub_size_t) ((grub_addr_t)_start - begin)); + have_memory = 1; + } + begin = modend; + } + + /* Avoid DMA problems. */ + if (end >= 0xfe000000) + end = 0xfe000000; + + if (end <= begin) + return 0; + + grub_mm_init_region ((void *) (grub_addr_t) begin, (grub_size_t) (end - begin)); + + have_memory = 1; + + return 0; +} + +void +grub_machine_init (void) +{ + struct grub_module_header *header; + void *dtb = 0; + grub_size_t dtb_size = 0; + + modend = grub_modules_get_end (); + + grub_video_coreboot_fb_early_init (); + + grub_machine_mmap_iterate (heap_init, NULL); + if (!have_memory) + grub_fatal ("No memory found"); + + grub_video_coreboot_fb_late_init (); + + grub_font_init (); + grub_gfxterm_init (); + + FOR_MODULES (header) + if (header->type == OBJ_TYPE_DTB) + { + char *dtb_orig_addr, *dtb_copy; + dtb_orig_addr = (char *) header + sizeof (struct grub_module_header); + + dtb_size = header->size - sizeof (struct grub_module_header); + dtb = dtb_copy = grub_malloc (dtb_size); + grub_memmove (dtb_copy, dtb_orig_addr, dtb_size); + break; + } + if (!dtb) + grub_fatal ("No DTB found"); + grub_fdtbus_init (dtb, dtb_size); + + grub_rk3288_spi_init (); + + grub_machine_timer_init (); + grub_cros_init (); + grub_pl050_init (); +} + +void +grub_machine_get_bootlocation (char **device __attribute__ ((unused)), + char **path __attribute__ ((unused))) +{ +} + +void +grub_machine_fini (int flags __attribute__ ((unused))) +{ +} diff --git a/grub-core/kern/arm/coreboot/timer.c b/grub-core/kern/arm/coreboot/timer.c new file mode 100644 index 0000000..d97b844 --- /dev/null +++ b/grub-core/kern/arm/coreboot/timer.c @@ -0,0 +1,101 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2016 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/mm.h> +#include <grub/machine/kernel.h> +#include <grub/types.h> +#include <grub/err.h> +#include <grub/time.h> +#include <grub/fdtbus.h> +#include <grub/misc.h> + +grub_uint64_t +grub_armv7_get_timer_value(void); + +grub_uint32_t +grub_armv7_get_timer_frequency(void); + +grub_uint32_t +grub_arm_pfr1(void); + +static int have_timer = 0; +static volatile grub_uint32_t *sp804_regs; + +static grub_uint64_t +sp804_get_time_ms (void) +{ + static grub_uint32_t high, last_low; + grub_uint32_t low = ~sp804_regs[1]; + if (last_low > low) + high++; + last_low = low; + return grub_divmod64 ((((grub_uint64_t) high) << 32) | low, + 1000, 0); +} + +static grub_err_t +sp804_attach(const struct grub_fdtbus_dev *dev) +{ + if (have_timer) + return GRUB_ERR_NONE; + sp804_regs = grub_fdtbus_map_reg (dev, 0, 0); + if (!grub_fdtbus_is_mapping_valid (sp804_regs)) + return grub_error (GRUB_ERR_IO, "could not map sp804: %p", sp804_regs); + grub_install_get_time_ms (sp804_get_time_ms); + have_timer = 1; + return GRUB_ERR_NONE; +} + +struct grub_fdtbus_driver sp804 = +{ + .compatible = "arm,sp804", + .attach = sp804_attach +}; + +static grub_uint32_t timer_frequency_in_khz; + +static grub_uint64_t +generic_get_time_ms (void) +{ + return grub_divmod64 (grub_armv7_get_timer_value(), timer_frequency_in_khz, 0); +} + +static int +try_generic_timer (void) +{ + if (((grub_arm_pfr1 () >> 16) & 0xf) != 1) + return 0; + grub_printf ("freq = %x\n", grub_armv7_get_timer_frequency()); + timer_frequency_in_khz = 0x016e3600 / 1000; //grub_armv7_get_timer_frequency() / 1000; + if (timer_frequency_in_khz == 0) + return 0; + grub_install_get_time_ms (generic_get_time_ms); + have_timer = 1; + return 1; +} + +void +grub_machine_timer_init (void) +{ + grub_fdtbus_register (&sp804); + + if (!have_timer) + try_generic_timer (); + if (!have_timer) + grub_fatal ("No timer found"); +} |