4  * Copyright (c) 2005-2007 Fabrice Bellard
30 #include "hw/qdev-properties.h"
31 #include "hw/qdev-properties-system.h"
32 #include "system/block-backend.h"
36 #include "qemu/error-report.h"
48     addr = (addr >> s->it_shift) & (s->size - 1);  in macio_nvram_writeb()
50     s->data[addr] = value;  in macio_nvram_writeb()
51     if (s->blk) {  in macio_nvram_writeb()
52         if (blk_pwrite(s->blk, addr, 1, &s->data[addr], 0) < 0) {  in macio_nvram_writeb()
54                          blk_name(s->blk));  in macio_nvram_writeb()
65     addr = (addr >> s->it_shift) & (s->size - 1);  in macio_nvram_readb()
66     value = s->data[addr];  in macio_nvram_readb()
102     s->data = g_malloc0(s->size);  in macio_nvram_realizefn()
104     if (s->blk) {  in macio_nvram_realizefn()
105         int64_t len = blk_getlength(s->blk);  in macio_nvram_realizefn()
107             error_setg_errno(errp, -len,  in macio_nvram_realizefn()
108                              "could not get length of nvram backing image");  in macio_nvram_realizefn()
110         } else if (len != s->size) {  in macio_nvram_realizefn()
111             error_setg_errno(errp, -len,  in macio_nvram_realizefn()
115         if (blk_set_perm(s->blk, BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE,  in macio_nvram_realizefn()
119         if (blk_pread(s->blk, 0, s->size, s->data, 0) < 0) {  in macio_nvram_realizefn()
120             error_setg(errp, "can't read-nvram contents");  in macio_nvram_realizefn()
125     memory_region_init_io(&s->mem, OBJECT(s), &macio_nvram_ops, s,  in macio_nvram_realizefn()
126                           "macio-nvram", s->size << s->it_shift);  in macio_nvram_realizefn()
127     sysbus_init_mmio(d, &s->mem);  in macio_nvram_realizefn()
134     g_free(s->data);  in macio_nvram_unrealizefn()
147     dc->realize = macio_nvram_realizefn;  in macio_nvram_class_init()
148     dc->unrealize = macio_nvram_unrealizefn;  in macio_nvram_class_init()
150     dc->vmsd = &vmstate_macio_nvram;  in macio_nvram_class_init()
152     set_bit(DEVICE_CATEGORY_MISC, dc->categories);  in macio_nvram_class_init()
174     sysp_end = chrp_nvram_create_system_partition(&nvr->data[off],  in pmac_format_nvram_partition_of()
178     chrp_nvram_create_free_partition(&nvr->data[sysp_end], len - sysp_end);  in pmac_format_nvram_partition_of()
189     unsigned char *data = &nvr->data[start];  in pmac_format_nvram_partition_osx()
193     part_header->signature = OSX_NVRAM_SIGNATURE;  in pmac_format_nvram_partition_osx()
194     pstrcpy(part_header->name, sizeof(part_header->name), "wwwwwwwwwwww");  in pmac_format_nvram_partition_osx()
202     stl_be_p(&data[16], adler32(0, &data[20], len - 20));  in pmac_format_nvram_partition_osx()
209      * Mac OS X expects side "B" of the flash at the second half of NVRAM,  in pmac_format_nvram_partition()
210      * so we use half of the chip for OF and the other half for a free OSX  in pmac_format_nvram_partition()