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nvram: Move the remaining CHRP NVRAM related code to chrp_nvram.[ch]
Everything that is related to CHRP NVRAM should rather reside in chrp_nvram.c / chrp_nvram.h instead of openbios_firmware_abi.h. Signed-off-by: Thomas Huth <thuth@redhat.com> Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Thomas Huth
David Gibson
parent
2024c01421
commit
ad723fe5a0
5 changed files with 57 additions and 60 deletions
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@ -23,26 +23,35 @@
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#include "qemu/cutils.h"
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#include "hw/hw.h"
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#include "hw/nvram/chrp_nvram.h"
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#include "hw/nvram/openbios_firmware_abi.h"
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#include "sysemu/sysemu.h"
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static int chrp_nvram_set_var(uint8_t *nvram, int addr, const char *str)
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{
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int len;
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len = strlen(str) + 1;
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memcpy(&nvram[addr], str, len);
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return addr + len;
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}
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/**
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* Create a "system partition", used for the Open Firmware
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* environment variables.
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*/
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int chrp_nvram_create_system_partition(uint8_t *data, int min_len)
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{
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struct OpenBIOS_nvpart_v1 *part_header;
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ChrpNvramPartHdr *part_header;
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unsigned int i;
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int end;
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part_header = (struct OpenBIOS_nvpart_v1 *)data;
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part_header->signature = OPENBIOS_PART_SYSTEM;
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part_header = (ChrpNvramPartHdr *)data;
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part_header->signature = CHRP_NVPART_SYSTEM;
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pstrcpy(part_header->name, sizeof(part_header->name), "system");
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end = sizeof(struct OpenBIOS_nvpart_v1);
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end = sizeof(ChrpNvramPartHdr);
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for (i = 0; i < nb_prom_envs; i++) {
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end = OpenBIOS_set_var(data, end, prom_envs[i]);
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end = chrp_nvram_set_var(data, end, prom_envs[i]);
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}
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/* End marker */
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@ -54,7 +63,7 @@ int chrp_nvram_create_system_partition(uint8_t *data, int min_len)
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if (end < min_len) {
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end = min_len;
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}
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OpenBIOS_finish_partition(part_header, end);
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chrp_nvram_finish_partition(part_header, end);
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return end;
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}
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@ -64,13 +73,13 @@ int chrp_nvram_create_system_partition(uint8_t *data, int min_len)
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*/
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int chrp_nvram_create_free_partition(uint8_t *data, int len)
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{
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struct OpenBIOS_nvpart_v1 *part_header;
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ChrpNvramPartHdr *part_header;
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part_header = (struct OpenBIOS_nvpart_v1 *)data;
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part_header->signature = OPENBIOS_PART_FREE;
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part_header = (ChrpNvramPartHdr *)data;
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part_header->signature = CHRP_NVPART_FREE;
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pstrcpy(part_header->name, sizeof(part_header->name), "free");
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OpenBIOS_finish_partition(part_header, len);
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chrp_nvram_finish_partition(part_header, len);
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return len;
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}
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@ -24,7 +24,6 @@
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*/
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#include "qemu/osdep.h"
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#include "hw/hw.h"
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#include "hw/nvram/openbios_firmware_abi.h"
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#include "hw/nvram/chrp_nvram.h"
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#include "hw/ppc/mac.h"
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#include "qemu/cutils.h"
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@ -163,15 +162,15 @@ static void pmac_format_nvram_partition_osx(MacIONVRAMState *nvr, int off,
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int len)
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{
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uint32_t start = off;
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struct OpenBIOS_nvpart_v1 *part_header;
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ChrpNvramPartHdr *part_header;
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unsigned char *data = &nvr->data[start];
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/* empty partition */
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part_header = (struct OpenBIOS_nvpart_v1 *)data;
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part_header = (ChrpNvramPartHdr *)data;
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part_header->signature = OSX_NVRAM_SIGNATURE;
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pstrcpy(part_header->name, sizeof(part_header->name), "wwwwwwwwwwww");
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OpenBIOS_finish_partition(part_header, len);
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chrp_nvram_finish_partition(part_header, len);
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/* Generation */
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stl_be_p(&data[20], 2);
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@ -18,6 +18,36 @@
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#ifndef CHRP_NVRAM_H
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#define CHRP_NVRAM_H
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/* OpenBIOS NVRAM partition */
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typedef struct {
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uint8_t signature;
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uint8_t checksum;
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uint16_t len; /* Big endian, length divided by 16 */
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char name[12];
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} ChrpNvramPartHdr;
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#define CHRP_NVPART_SYSTEM 0x70
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#define CHRP_NVPART_FREE 0x7f
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static inline void
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chrp_nvram_finish_partition(ChrpNvramPartHdr *header, uint32_t size)
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{
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unsigned int i, sum;
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uint8_t *tmpptr;
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/* Length divided by 16 */
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header->len = cpu_to_be16(size >> 4);
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/* Checksum */
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tmpptr = (uint8_t *)header;
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sum = *tmpptr;
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for (i = 0; i < 14; i++) {
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sum += tmpptr[2 + i];
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sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
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}
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header->checksum = sum & 0xff;
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}
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int chrp_nvram_create_system_partition(uint8_t *data, int min_len);
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int chrp_nvram_create_free_partition(uint8_t *data, int len);
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@ -1,47 +1,6 @@
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#ifndef OPENBIOS_FIRMWARE_ABI_H
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#define OPENBIOS_FIRMWARE_ABI_H
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/* OpenBIOS NVRAM partition */
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struct OpenBIOS_nvpart_v1 {
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uint8_t signature;
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uint8_t checksum;
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uint16_t len; // BE, length divided by 16
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char name[12];
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};
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#define OPENBIOS_PART_SYSTEM 0x70
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#define OPENBIOS_PART_FREE 0x7f
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static inline void
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OpenBIOS_finish_partition(struct OpenBIOS_nvpart_v1 *header, uint32_t size)
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{
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unsigned int i, sum;
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uint8_t *tmpptr;
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// Length divided by 16
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header->len = cpu_to_be16(size >> 4);
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// Checksum
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tmpptr = (uint8_t *)header;
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sum = *tmpptr;
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for (i = 0; i < 14; i++) {
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sum += tmpptr[2 + i];
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sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
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}
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header->checksum = sum & 0xff;
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}
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static inline uint32_t
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OpenBIOS_set_var(uint8_t *nvram, uint32_t addr, const char *str)
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{
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uint32_t len;
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len = strlen(str) + 1;
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memcpy(&nvram[addr], str, len);
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return addr + len;
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}
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/* Sun IDPROM structure at the end of NVRAM */
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/* from http://www.squirrel.com/squirrel/sun-nvram-hostid.faq.html */
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struct Sun_nvram {
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@ -18,7 +18,7 @@
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#include "qemu/sockets.h"
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#include "sysemu/char.h"
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#include "sysemu/sysemu.h"
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#include "hw/nvram/openbios_firmware_abi.h"
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#include "hw/nvram/chrp_nvram.h"
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#define MIN_NVRAM_SIZE 8192 /* from spapr_nvram.c */
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@ -137,15 +137,15 @@ static void init_bootfile_ppc(const char *bootpath)
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{
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FILE *bootfile;
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char buf[MIN_NVRAM_SIZE];
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struct OpenBIOS_nvpart_v1 *header = (struct OpenBIOS_nvpart_v1 *)buf;
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ChrpNvramPartHdr *header = (ChrpNvramPartHdr *)buf;
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memset(buf, 0, MIN_NVRAM_SIZE);
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/* Create a "common" partition in nvram to store boot-command property */
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header->signature = OPENBIOS_PART_SYSTEM;
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header->signature = CHRP_NVPART_SYSTEM;
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memcpy(header->name, "common", 6);
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OpenBIOS_finish_partition(header, MIN_NVRAM_SIZE);
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chrp_nvram_finish_partition(header, MIN_NVRAM_SIZE);
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/* FW_MAX_SIZE is 4MB, but slof.bin is only 900KB,
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* so let's modify memory between 1MB and 100MB
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