*/
#include <efi.h>
#include <efilib.h>
+#include <string.h>
#include "elilo.h"
#include "loader.h"
#include "rmswitch.h"
+#define DEBUG_CREATE_BOOT_PARAMS 0
+#if DEBUG_CREATE_BOOT_PARAMS
+#define DPR(a) do { if (elilo_opt.debug) { Print a; } } while ( 0 )
+#else
+#define DPR(a)
+#endif
+
extern loader_ops_t bzimage_loader, plain_loader, gzip_loader;
/*
UINTN high_ext_mem = 32 * 1024 * 1024;
/* This starting address will hold true for all of the loader types for now */
-VOID *kernel_start = (void *)DEFAULT_KERNEL_START;
+VOID *kernel_start = (VOID *)DEFAULT_KERNEL_START;
/* The kernel may load elsewhere if EFI firmware reserves kernel_start */
-VOID *kernel_load_address = DEFAULT_KERNEL_START;
+VOID *kernel_load_address = (VOID *)DEFAULT_KERNEL_START;
VOID *initrd_start = NULL;
UINTN initrd_size = 0;
+INTN e820_map_overflow = 0;
+
INTN
sysdeps_init(EFI_HANDLE dev)
{
/*
* initrd_get_addr()
* Compute a starting address for the initial RAMdisk image.
- * For now, this image is placed immediately after the end of
- * the kernel memory. Inside the start_kernel() code, the
- * RAMdisk image will be relocated to the top of available
- * extended memory.
+ * For now we suggest 'initrd_addr_max' with room for 32MB,
+ * as image->pgcnt is not initialized yet.
*/
INTN
sysdeps_initrd_get_addr(kdesc_t *kd, memdesc_t *imem)
return -1;
}
- VERB_PRT(3, Print(L"kstart="PTR_FMT" kentry="PTR_FMT" kend="PTR_FMT"\n",
- kd->kstart, kd->kentry, kd->kend));
+ VERB_PRT(3, Print(L"initrd_addr_max="PTR_FMT" reserve=%d\n",
+ param_start->s.initrd_addr_max, 32*MB));
- imem->start_addr = kd->kend;
+ imem->start_addr = (VOID *)
+ (((UINT64)param_start->s.initrd_addr_max - 32*MB + 1)
+ & ~EFI_PAGE_MASK);
VERB_PRT(3, Print(L"initrd start_addr="PTR_FMT" pgcnt=%d\n",
imem->start_addr, imem->pgcnt));
return 0;
}
+
+/*
+ * checkfix_initrd()
+ * Check and possibly fix allocation of initrd memory.
+ */
+VOID *
+sysdeps_checkfix_initrd(VOID *start_addr, memdesc_t *imem)
+{
+ UINTN pgcnt = EFI_SIZE_TO_PAGES(imem->size);
+ UINT64 initrd_addr_max = (UINT64)param_start->s.initrd_addr_max;
+ UINT64 ki_max = initrd_addr_max - imem->size + 1;
+ VOID *ki_max_addr;
+
+ VERB_PRT( 3, Print(L"loadfile: start_addr="PTR_FMT
+ " ki_max_addr="PTR_FMT"\n", start_addr, (VOID *)ki_max));
+ if (ki_max > UINT32_MAX) {
+ ERR_PRT((L"Force kernel specified initrd_addr_max="PTR_FMT
+ " below 4GB\n", (VOID *)initrd_addr_max));
+ ki_max = UINT32_MAX - imem->size + 1;
+ }
+ ki_max_addr = (VOID *)ki_max;
+
+ if ((UINT64)start_addr > ki_max) {
+ VERB_PRT(1, Print(L"initrd start_addr="PTR_FMT" above "
+ "limit="PTR_FMT"\n", start_addr, ki_max_addr));
+ free(start_addr);
+ start_addr = NULL;
+ }
+ /* so either the initial allocation failed or it's been to high! */
+ if (start_addr == NULL) {
+ start_addr = alloc_pages(pgcnt, EfiLoaderData,
+ AllocateMaxAddress, ki_max_addr);
+ }
+ if ((UINT64)start_addr > ki_max) {
+ ERR_PRT((L"Failed to allocate %d pages below %dMB",
+ pgcnt, (param_start->s.initrd_addr_max+1)>>20));
+ free(start_addr);
+ start_addr = NULL;
+ }
+ return start_addr;
+}
+
VOID
sysdeps_free_boot_params(boot_params_t *bp)
{
UINTN size1;
UINT8 i;
+ if (x86_64_text_mode() == 1) {
+ Print((L"Skip GOP init, force text-mode.\n"));
+ return -1;
+ }
efi_status = uefi_call_wrapper(
BS->LocateHandle,
5,
(VOID **)Gop_handle);
if (EFI_ERROR(efi_status) && efi_status != EFI_BUFFER_TOO_SMALL) {
- ERR_PRT((L"LocateHandle GopProtocol failed."));
+ Print(L"LocateHandle GopProtocol failed.\n");
+ Print(L"--Either no graphics head is installed,\n" \
+ "--efi console is set to serial, or,\n" \
+ "--the EFI firmware version of this machine is\n" \
+ "--older than UEFI 2.0. and does not support GOP");
+ Print(L"you can SAFELY IGNORE this error. elilo will\n" \
+ "default to text-mode.\n Alternatively you can " \
+ "now force text mode by setting config variable\n" \
+ "text_mode=1 for x86 in elilo.conf or via cmdline.\n\n");
+ Print(L"However if this is the last text output you see\n" \
+ "ensure that your kernel console command line\n " \
+ "variable matches up with the actual efi boot menu\n" \
+ "console output settings.\n\n");
return -1;
}
Gop_handle = alloc(size, 0);
return 0;
}
+CHAR16 *
+StrStr(IN const CHAR16 *h, IN const CHAR16 *n)
+{
+ const CHAR16 *t = h;
+ CHAR16 *res;
+ int len = 0, i;
+
+ len = StrLen((CHAR16 *)n);
+ while(*t != CHAR_NULL) {
+ res = StrChr( t, n[0]);
+ if (!res) return res;
+ for( i = 1; i < len && res[i] != CHAR_NULL && res[i] == n[i]; i++);
+ if ( i == len ) return res;
+ t = res + 1;
+ if (t > h + CMDLINE_MAXLEN) return (CHAR16 *)0;
+ }
+
+ return (CHAR16 *)0;
+}
+
+CHAR8 *
+StrStr8(IN const CHAR8 *h, IN const CHAR8 *n)
+{
+ const CHAR8 *t = h;
+ CHAR8 *res;
+ int len = 0, i;
+
+ len = strlena((CHAR8 *)n);
+ while(*t != 0) {
+ res = strchra( t, n[0]);
+ if (!res) return res;
+ for( i = 1; i < len && res[i] != 0 && res[i] == n[i]; i++);
+ if ( i == len ) return res;
+ t = res + 1;
+ if (t > (h + CMDLINE_MAXLEN)) return (CHAR8 *)0;
+ }
+
+ return (CHAR8 *)0;
+}
+
/* Convert EFI memory map to E820 map for the operating system
* This code is based on a Linux kernel patch submitted by Edgar Hucek
*/
+#if DEBUG_CREATE_BOOT_PARAMS
+static int e820_max = 6;
+#else
+static int e820_max = E820_MAX;
+#endif
+
/* Add a memory region to the e820 map */
static void add_memory_region (struct e820entry *e820_map,
int *e820_nr_map,
unsigned int type)
{
int x = *e820_nr_map;
+ static unsigned long long estart = 0ULL;
+ static unsigned long esize = 0L;
+ static unsigned int etype = -1;
+ static int merge = 0;
- if (x == E820_MAX) {
- Print(L"Too many entries in the memory map!\n");
- return;
- }
+ if (x == 0)
+ DPR((L"AMR: %3s %4s %16s/%12s/%s\n",
+ L"idx", L" ", L"start", L"size", L"type"));
+ /* merge adjacent regions of same type */
if ((x > 0) && e820_map[x-1].addr + e820_map[x-1].size == start
- && e820_map[x-1].type == type)
+ && e820_map[x-1].type == type) {
e820_map[x-1].size += size;
- else {
+ estart = e820_map[x-1].addr;
+ esize = e820_map[x-1].size;
+ etype = e820_map[x-1].type;
+ merge++;
+ return;
+ }
+ /* fill up to E820_MAX */
+ if ( x < e820_max ) {
e820_map[x].addr = start;
e820_map[x].size = size;
e820_map[x].type = type;
(*e820_nr_map)++;
+ if (merge) DPR((L"AMR: %3d ==> %016llx/%012lx/%d (%d)\n",
+ x-1, estart, esize, etype, merge));
+ merge=0;
+ DPR((L"AMR: %3d add %016llx/%012lx/%d\n",
+ x, start, size, type));
+ return;
}
+ /* different type means another region didn't fit */
+ /* or same type, but there's a hole */
+ if (etype != type || (estart + esize) != start) {
+ if (merge) DPR((L"AMR: %3d ===> %016llx/%012lx/%d (%d)\n",
+ e820_map_overflow, estart, esize, etype, merge));
+ merge = 0;
+ estart = start;
+ esize = size;
+ etype = type;
+ e820_map_overflow++;
+ DPR((L"AMR: %3d OVER %016llx/%012lx/%d\n",
+ e820_map_overflow, start, size, type));
+ return;
+ }
+ /* same type and no hole, merge it */
+ estart += esize;
+ esize += size;
+ merge++;
}
void fill_e820map(boot_params_t *bp, mmap_desc_t *mdesc)
break;
default:
/* We should not hit this case */
+ DBG_PRT((L"hit default!?"));
add_memory_region(e820_map, &e820_nr_map,
md->PhysicalStart,
md->NumberOfPages << EFI_PAGE_SHIFT,
/*
* x86_64 specific boot parameters initialization routine
+ *
+ * Note: debug and verbose messages have already been turned off!
*/
INTN
sysdeps_create_boot_params(
UINT8 row, col;
UINT8 mode;
UINT16 hdr_version;
+ UINT8 e820_map_overflow_warned = 0;
+
+#if DEBUG_CREATE_BOOT_PARAMS
+ elilo_opt.debug=1;
+ elilo_opt.verbose=5;
+#endif
DBG_PRT((L"fill_boot_params()\n"));
hdr_version = (bp->s.hdr_major << 8) | bp->s.hdr_minor;
/*
- * Clear out unused memory in boot sector image.
+ * Do NOT clear out unknown memory in boot sector image.
+ * This breaks boot protocol >= 2.10 (2.6.31).
*/
- bp->s.unused_1 = 0;
- bp->s.unused_2 = 0;
- ZeroMem(&bp->s.unused_3, sizeof bp->s.unused_3);
- ZeroMem(&bp->s.unused_4, sizeof bp->s.unused_4);
- ZeroMem(&bp->s.unused_51, sizeof bp->s.unused_51);
- ZeroMem(&bp->s.unused_52, sizeof bp->s.unused_52);
- bp->s.unused_6 = 0;
- bp->s.unused_7 = 0;
- ZeroMem(bp->s.unused_8, sizeof bp->s.unused_8);
/*
* Tell kernel this was loaded by an advanced loader type.
DBG_PRT((L"initrd->start_addr="PTR_FMT" initrd->pgcnt=%d\n",
initrd->start_addr, initrd->pgcnt));
- /* These RAMdisk flags are not needed, just zero them. */
- bp->s.ramdisk_flags = 0;
+ /* These RAMdisk flags are not needed, just zero them. NOT!*/
+ /* 'ramdisk_flags' (@0x1F8) is called 'ram_size' in the meantime, */
+ /* see Documentation/x86/boot.txt. */
if (initrd->start_addr && initrd->pgcnt) {
+ if ( (UINT64)initrd->start_addr > UINT32_MAX ) {
+ ERR_PRT((L"Start of initrd out of reach (>4GB)."));
+ free_kmem();
+ return -1;
+ }
/* %%TBD - This will probably have to be changed. */
bp->s.initrd_start = (UINT32)(UINT64)initrd->start_addr;
bp->s.initrd_size = (UINT32)(initrd->size);
- /*
- * This is the RAMdisk root device for RedHat 2.2.x
- * kernels (major 0x01, minor 0x00).
- */
-
- bp->s.orig_root_dev = 0x0100;
} else {
bp->s.initrd_start = 0;
bp->s.initrd_size = 0;
bp->s.mca_info_len = 0;
ZeroMem(bp->s.mca_info_buf, sizeof bp->s.mca_info_buf);
- /*
- * Pointing device presence. The kernel will detect this.
- */
- bp->s.aux_dev_info = NO_MOUSE;
-
/*
* EFI loader signature
*/
/*
* Kernel entry point.
*/
+ if ( (UINT64)kernel_start != (UINT32)(UINT64)kernel_start ) {
+ ERR_PRT((L"Start of kernel (will be) out of reach (>4GB)."));
+ free_kmem();
+ return -1;
+ }
bp->s.kernel_start = (UINT32)(UINT64)kernel_start;
/*
CHECK_OFFSET(setup_sectors, 0x1F1, L"%xh");
CHECK_OFFSET(mount_root_rdonly, 0x1F2, L"%xh");
CHECK_OFFSET(sys_size, 0x1F4, L"%xh");
- CHECK_OFFSET(swap_dev, 0x1F6, L"%xh");
- CHECK_OFFSET(ramdisk_flags, 0x1F8, L"%xh");
CHECK_OFFSET(video_mode_flag, 0x1FA, L"%xh");
CHECK_OFFSET(orig_root_dev, 0x1FC, L"%xh");
- CHECK_OFFSET(aux_dev_info, 0x1FF, L"%xh");
+ CHECK_OFFSET(boot_flag, 0x1FE, L"%xh");
CHECK_OFFSET(jump, 0x200, L"%xh");
CHECK_OFFSET(setup_sig, 0x202, L"'%-4.4a'");
CHECK_OFFSET(hdr_minor, 0x206, L"%xh");
CHECK_OFFSET(kernel_start, 0x214, L"%xh");
CHECK_OFFSET(initrd_start, 0x218, L"%xh");
CHECK_OFFSET(initrd_size, 0x21C, L"%xh");
- CHECK_OFFSET(bootsect_helper, 0x220, L"%xh");
CHECK_OFFSET(heap_end_ptr, 0x224, L"%xh");
CHECK_OFFSET(cmdline_addr, 0x228, L"%xh");
+ CHECK_OFFSET(e820_map, 0x2D0, L"%xh");
if (test) {
ERR_PRT((L"Boot sector and/or setup parameter alignment error."));
* and update the bootparam accordingly
*/
fill_e820map(bp, &mdesc);
+
+#if DEBUG_CREATE_BOOT_PARAMS
+ if ( e820_map_overflow == 0 )
+ e820_map_overflow = -1; /* force second get_memmap()! */
+#endif
+ if (e820_map_overflow && !e820_map_overflow_warned) {
+ CHAR8 *aem = (CHAR8 *)"add_efi_memmap";
+ e820_map_overflow_warned++;
+
+#if DEBUG_CREATE_BOOT_PARAMS
+ elilo_opt.debug=0;
+ elilo_opt.verbose=0;
+#endif
+ if (e820_map_overflow == -1 || StrStr8(cmdline, aem)) {
+ /* Print(L"...mapping again, silently!\n"); */
+ goto do_memmap;
+ }
+
+ Print(L"\nCAUTION: EFI memory map has %d more entr%a"
+ " than E820 map supports.\n"
+ "To access all memory, '%a' may be necessary.\n\n",
+ e820_map_overflow, (e820_map_overflow==1)?"y":"ies",
+ aem);
+ goto do_memmap;
+ }
return 0;
}
projects / debian / elilo / blobdiff