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elilo
elilo-x86-64-e820-max.diff
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File elilo-x86-64-e820-max.diff of Package elilo
--- bootparams.c | 2 x86_64/system.c | 139 +++++++++++++++++++++++++++++++++++++++++++++++++++++--- 2 files changed, 134 insertions(+), 7 deletions(-) --- a/bootparams.c +++ b/bootparams.c @@ -96,6 +96,8 @@ create_boot_params(CHAR16 *args, memdesc */ Memset(bp, 0, BOOT_PARAM_MEMSIZE); + U2ascii(args, cp, cmdline_size); + if (sysdeps_create_boot_params(bp, cp, initrd, vmcode, cookie) == -1) return 0; /* --- a/x86_64/system.c +++ b/x86_64/system.c @@ -38,11 +38,19 @@ */ #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; /* @@ -113,6 +121,8 @@ VOID *kernel_load_address = (VOID *)DEFA VOID *initrd_start = NULL; UINTN initrd_size = 0; +INTN e820_map_overflow = 0; + INTN sysdeps_init(EFI_HANDLE dev) { @@ -368,10 +378,56 @@ static INTN get_video_info(boot_params_t 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, @@ -380,21 +436,56 @@ static void add_memory_region (struct e8 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 == 0) + DPR((L"AMR: %3s %4s %16s/%12s/%s\n", + L"idx", L" ", L"start", L"size", L"type")); - if (x == E820_MAX) { - Print(L"Too many entries in the memory map!\n"); - return; - } - + /* 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) @@ -473,6 +564,7 @@ void fill_e820map(boot_params_t *bp, mma 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, @@ -486,6 +578,8 @@ void fill_e820map(boot_params_t *bp, mma /* * x86_64 specific boot parameters initialization routine + * + * Note: debug and verbose messages have already been turned off! */ INTN sysdeps_create_boot_params( @@ -501,6 +595,12 @@ 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")); @@ -834,6 +934,31 @@ do_memmap: * 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; }
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