mirror of
https://github.com/AsahiLinux/u-boot
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Merge branch 'ft_infr'
This commit is contained in:
Kumar Gala
commit
21a3cbd0d8
7 changed files with 136 additions and 18 deletions
28
CHANGELOG
28
CHANGELOG
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@ -2,6 +2,34 @@
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Changes since U-Boot 1.1.4:
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======================================================================
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* Add helper function for generic flat device tree fixups for mpc83xx
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Patch by Kumar Gala 11 Jan 2006
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* Add support for passing initrd information via flat device tree
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Patch by Kumar Gala 11 Jan 2006
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* Added OF_STDOUT_PATH and OF_SOC
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OF_STDOUT_PATH specifies the path to the device the kernel can use
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for console output
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OF_SOC specifies the proper name of the SOC node if one exists.
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Patch by Kumar Gala 11 Jan 2006
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* Allow board code to fixup the flat device tree before booting a
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kernel
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Patch by Kumar Gala 11 Jan 2006
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* Added CONFIG_ options for bd_t and env in flat dev tree
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CONFIG_OF_HAS_BD_T will put a copy of the bd_t
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into the resulting flat device tree.
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CONFIG_OF_HAS_UBOOT_ENV will copy the environment
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variables from u-boot into the flat device tree
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Patch by Kumar Gala 11 Jan 2006
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* Report back PCI bus when doing table based device config
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Patch by Kumar Gala 11 Jan 2006
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17
README
17
README
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@ -411,7 +411,24 @@ The following options need to be configured:
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The maximum size of the constructed OF tree.
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OF_CPU - The proper name of the cpus node.
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OF_SOC - The proper name of the soc node.
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OF_TBCLK - The timebase frequency.
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OF_STDOUT_PATH - The path to the console device
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CONFIG_OF_HAS_BD_T
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The resulting flat device tree will have a copy of the bd_t.
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Space should be pre-allocated in the dts for the bd_t.
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CONFIG_OF_HAS_UBOOT_ENV
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The resulting flat device tree will have a copy of u-boot's
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environment variables
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CONFIG_OF_BOARD_SETUP
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Board code has addition modification that it wants to make
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to the flat device tree before handing it off to the kernel
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- Serial Ports:
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CFG_PL010_SERIAL
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@ -819,7 +819,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
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(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
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#else
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ft_setup(of_flat_tree, OF_FLAT_TREE_MAX_SIZE, kbd);
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ft_setup(of_flat_tree, OF_FLAT_TREE_MAX_SIZE, kbd, initrd_start, initrd_end);
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/* ft_dump_blob(of_flat_tree); */
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#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
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@ -828,12 +828,16 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
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/*
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* Linux Kernel Parameters:
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* r3: ptr to OF flat tree, followed by the board info data
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* r4: initrd_start or 0 if no initrd
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* r5: initrd_end - unused if r4 is 0
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* r6: Start of command line string
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* r7: End of command line string
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* r4: physical pointer to the kernel itself
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* r5: NULL
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* r6: NULL
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* r7: NULL
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*/
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(*kernel) ((bd_t *)of_flat_tree, initrd_start, initrd_end, cmd_start, cmd_end);
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if (getenv("disable_of") != NULL)
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(*kernel) ((bd_t *)of_flat_tree, initrd_start, initrd_end,
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cmd_start, cmd_end);
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else
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(*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
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#endif
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}
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@ -163,7 +163,7 @@ void ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size)
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((u64 *) cxt->pres)[0] = cpu_to_be64(physaddr); /* phys = 0, size = 0, terminate */
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((u64 *) cxt->pres)[1] = cpu_to_be64(size);
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cxt->pres += 18; /* advance */
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cxt->pres += 16; /* advance */
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((u64 *) cxt->pres)[0] = 0; /* phys = 0, size = 0, terminate */
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((u64 *) cxt->pres)[1] = 0;
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@ -529,6 +529,7 @@ extern uchar(*env_get_char) (int);
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#define BDM(x) { .name = #x, .offset = offsetof(bd_t, bi_ ##x ) }
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#ifdef CONFIG_OF_HAS_BD_T
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static const struct {
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const char *name;
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int offset;
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@ -574,19 +575,24 @@ static const struct {
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#endif
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BDM(baudrate),
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};
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#endif
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void ft_setup(void *blob, int size, bd_t * bd)
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void ft_setup(void *blob, int size, bd_t * bd, ulong initrd_start, ulong initrd_end)
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{
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DECLARE_GLOBAL_DATA_PTR;
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u8 *end;
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u32 *p;
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int len;
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struct ft_cxt cxt;
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int i, k, nxt;
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static char tmpenv[256];
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char *s, *lval, *rval;
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ulong clock;
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uint32_t v;
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#if defined(CONFIG_OF_HAS_UBOOT_ENV)
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int k, nxt;
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#endif
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#if defined(CONFIG_OF_HAS_BD_T)
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u8 *end;
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#endif
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#if defined(CONFIG_OF_HAS_UBOOT_ENV) || defined(CONFIG_OF_HAS_BD_T)
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int i;
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static char tmpenv[256];
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#endif
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/* disable OF tree; booting old kernel */
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if (getenv("disable_of") != NULL) {
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@ -596,7 +602,8 @@ void ft_setup(void *blob, int size, bd_t * bd)
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ft_begin(&cxt, blob, size);
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/* fs_add_rsvmap not used */
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if (initrd_start && initrd_end)
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ft_add_rsvmap(&cxt, initrd_start, initrd_end - initrd_start + 1);
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ft_begin_tree(&cxt);
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@ -610,9 +617,12 @@ void ft_setup(void *blob, int size, bd_t * bd)
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/* back into root */
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ft_backtrack_node(&cxt);
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#ifdef CONFIG_OF_HAS_UBOOT_ENV
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ft_begin_node(&cxt, "u-boot-env");
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for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
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char *s, *lval, *rval;
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for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) ;
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s = tmpenv;
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for (k = i; k < nxt && s < &tmpenv[sizeof(tmpenv) - 1]; ++k)
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@ -629,12 +639,20 @@ void ft_setup(void *blob, int size, bd_t * bd)
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}
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ft_end_node(&cxt);
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#endif
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ft_begin_node(&cxt, "chosen");
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ft_prop_str(&cxt, "name", "chosen");
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ft_prop_str(&cxt, "bootargs", getenv("bootargs"));
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ft_prop_int(&cxt, "linux,platform", 0x600); /* what is this? */
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if (initrd_start && initrd_end) {
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ft_prop_int(&cxt, "linux,initrd-start", initrd_start);
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ft_prop_int(&cxt, "linux,initrd-end", initrd_end);
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}
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#ifdef OF_STDOUT_PATH
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ft_prop_str(&cxt, "linux,stdout-path", OF_STDOUT_PATH);
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#endif
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ft_end_node(&cxt);
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@ -647,14 +665,19 @@ void ft_setup(void *blob, int size, bd_t * bd)
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ft_dump_blob(blob);
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*/
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#ifdef CONFIG_OF_HAS_BD_T
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/* paste the bd_t at the end of the flat tree */
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end = (char *)blob +
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be32_to_cpu(((struct boot_param_header *)blob)->totalsize);
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memcpy(end, bd, sizeof(*bd));
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#endif
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#ifdef CONFIG_PPC
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#ifdef CONFIG_OF_HAS_BD_T
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for (i = 0; i < sizeof(bd_map)/sizeof(bd_map[0]); i++) {
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uint32_t v;
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sprintf(tmpenv, "/bd_t/%s", bd_map[i].name);
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v = *(uint32_t *)((char *)bd + bd_map[i].offset);
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@ -670,6 +693,7 @@ void ft_setup(void *blob, int size, bd_t * bd)
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p = ft_get_prop(blob, "/bd_t/ethspeed", &len);
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if (p != NULL)
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*p = cpu_to_be32((uint32_t) bd->bi_ethspeed);
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#endif
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clock = bd->bi_intfreq;
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p = ft_get_prop(blob, "/cpus/" OF_CPU "/clock-frequency", &len);
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@ -680,11 +704,14 @@ void ft_setup(void *blob, int size, bd_t * bd)
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clock = OF_TBCLK;
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p = ft_get_prop(blob, "/cpus/" OF_CPU "/timebase-frequency", &len);
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if (p != NULL)
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*p = cpu_to_be32(OF_TBCLK);
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*p = cpu_to_be32(clock);
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#endif
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#endif /* __powerpc__ */
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#ifdef CONFIG_OF_BOARD_SETUP
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ft_board_setup(blob, bd);
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#endif
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/*
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printf("final OF-tree\n");
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ft_dump_blob(blob);
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@ -35,6 +35,7 @@
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#include <watchdog.h>
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#include <command.h>
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#include <mpc83xx.h>
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#include <ft_build.h>
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#include <asm/processor.h>
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@ -151,3 +152,40 @@ void watchdog_reset (void)
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hang(); /* FIXME: implement watchdog_reset()? */
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}
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#endif /* CONFIG_WATCHDOG */
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#if defined(CONFIG_OF_FLAT_TREE)
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void
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ft_cpu_setup(void *blob, bd_t *bd)
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{
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u32 *p;
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int len;
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ulong clock;
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clock = bd->bi_busfreq;
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p = ft_get_prop(blob, "/cpus/" OF_CPU "/bus-frequency", &len);
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if (p != NULL)
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*p = cpu_to_be32(clock);
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p = ft_get_prop(blob, "/" OF_SOC "/bus-frequency", &len);
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if (p != NULL)
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*p = cpu_to_be32(clock);
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p = ft_get_prop(blob, "/" OF_SOC "/serial@4500/clock-frequency", &len);
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if (p != NULL)
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*p = cpu_to_be32(clock);
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p = ft_get_prop(blob, "/" OF_SOC "/serial@4600/clock-frequency", &len);
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if (p != NULL)
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*p = cpu_to_be32(clock);
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#ifdef CONFIG_MPC83XX_TSEC1
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p = ft_get_prop(blob, "/" OF_SOC "/ethernet@24000/address", &len);
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memcpy(p, bd->bi_enetaddr, 6);
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#endif
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#ifdef CONFIG_MPC83XX_TSEC2
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p = ft_get_prop(blob, "/" OF_SOC "/ethernet@25000/address", &len);
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memcpy(p, bd->bi_enet1addr, 6);
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#endif
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}
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#endif
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@ -584,5 +584,7 @@ typedef unsigned int led_id_t;
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#define OF_CPU "PowerPC,MPC870@0"
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#define OF_TBCLK (MPC8XX_HZ / 16)
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#define CONFIG_OF_HAS_BD_T 1
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#define CONFIG_OF_HAS_UBOOT_ENV 1
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#endif /* __CONFIG_H */
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@ -57,10 +57,12 @@ void ft_prop_int(struct ft_cxt *cxt, const char *name, int val);
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void ft_begin(struct ft_cxt *cxt, void *blob, int max_size);
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void ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size);
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void ft_setup(void *blob, int size, bd_t * bd);
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void ft_setup(void *blob, int size, bd_t * bd, ulong initrd_start, ulong initrd_end);
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void ft_dump_blob(const void *bphp);
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void ft_merge_blob(struct ft_cxt *cxt, void *blob);
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void *ft_get_prop(void *bphp, const char *propname, int *szp);
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void ft_board_setup(void *blob, bd_t *bd);
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#endif
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