instead of polling everytime the environment, we take usage of the global gd->fdt_blob variable and check it only against NULL.

Variable "dtbaddr" from environment is needed only one time on loading the devicetree within "load_devicetree()"

Signed-off-by: Hannes Petermaier oe5hpm@oevsv.at ---

board/BuR/common/common.c | 114 ++++++++++++++++++++++----------------------- 1 file changed, 55 insertions(+), 59 deletions(-)

diff --git a/board/BuR/common/common.c b/board/BuR/common/common.c index ccaa9c6..81ed8e5 100644 --- a/board/BuR/common/common.c +++ b/board/BuR/common/common.c @@ -39,7 +39,7 @@ static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; DECLARE_GLOBAL_DATA_PTR;

#ifdef CONFIG_USE_FDT - #define FDTPROP(a, b, c) fdt_getprop_u32_default((void *)a, b, c, ~0UL) + #define FDTPROP(b, c) fdt_getprop_u32_default(gd->fdt_blob, b, c, ~0UL) #define PATHTIM "/panel/display-timings/default" #define PATHINF "/panel/panel-info" #endif @@ -50,51 +50,50 @@ int load_lcdtiming(struct am335x_lcdpanel *panel) { struct am335x_lcdpanel pnltmp; #ifdef CONFIG_USE_FDT - u32 dtbaddr = getenv_ulong("dtbaddr", 16, ~0UL); u32 dtbprop;

- if (dtbaddr == ~0UL) { - puts("load_lcdtiming: failed to get 'dtbaddr' from env!\n"); + if (gd->fdt_blob == NULL) { + printf("%s: don't have a valid gd->fdt_blob!\n", __func__); return -1; } memcpy(&pnltmp, (void *)panel, sizeof(struct am335x_lcdpanel));

- pnltmp.hactive = FDTPROP(dtbaddr, PATHTIM, "hactive"); - pnltmp.vactive = FDTPROP(dtbaddr, PATHTIM, "vactive"); - pnltmp.bpp = FDTPROP(dtbaddr, PATHINF, "bpp"); - pnltmp.hfp = FDTPROP(dtbaddr, PATHTIM, "hfront-porch"); - pnltmp.hbp = FDTPROP(dtbaddr, PATHTIM, "hback-porch"); - pnltmp.hsw = FDTPROP(dtbaddr, PATHTIM, "hsync-len"); - pnltmp.vfp = FDTPROP(dtbaddr, PATHTIM, "vfront-porch"); - pnltmp.vbp = FDTPROP(dtbaddr, PATHTIM, "vback-porch"); - pnltmp.vsw = FDTPROP(dtbaddr, PATHTIM, "vsync-len"); - pnltmp.pup_delay = FDTPROP(dtbaddr, PATHTIM, "pupdelay"); - pnltmp.pon_delay = FDTPROP(dtbaddr, PATHTIM, "pondelay"); + pnltmp.hactive = FDTPROP(PATHTIM, "hactive"); + pnltmp.vactive = FDTPROP(PATHTIM, "vactive"); + pnltmp.bpp = FDTPROP(PATHINF, "bpp"); + pnltmp.hfp = FDTPROP(PATHTIM, "hfront-porch"); + pnltmp.hbp = FDTPROP(PATHTIM, "hback-porch"); + pnltmp.hsw = FDTPROP(PATHTIM, "hsync-len"); + pnltmp.vfp = FDTPROP(PATHTIM, "vfront-porch"); + pnltmp.vbp = FDTPROP(PATHTIM, "vback-porch"); + pnltmp.vsw = FDTPROP(PATHTIM, "vsync-len"); + pnltmp.pup_delay = FDTPROP(PATHTIM, "pupdelay"); + pnltmp.pon_delay = FDTPROP(PATHTIM, "pondelay");

/* calc. proper clk-divisor */ - dtbprop = FDTPROP(dtbaddr, PATHTIM, "clock-frequency"); + dtbprop = FDTPROP(PATHTIM, "clock-frequency"); if (dtbprop != ~0UL) pnltmp.pxl_clk_div = 192000000 / dtbprop; else pnltmp.pxl_clk_div = ~0UL;

/* check polarity of control-signals */ - dtbprop = FDTPROP(dtbaddr, PATHTIM, "hsync-active"); + dtbprop = FDTPROP(PATHTIM, "hsync-active"); if (dtbprop == 0) pnltmp.pol |= HSYNC_INVERT; - dtbprop = FDTPROP(dtbaddr, PATHTIM, "vsync-active"); + dtbprop = FDTPROP(PATHTIM, "vsync-active"); if (dtbprop == 0) pnltmp.pol |= VSYNC_INVERT; - dtbprop = FDTPROP(dtbaddr, PATHINF, "sync-ctrl"); + dtbprop = FDTPROP(PATHINF, "sync-ctrl"); if (dtbprop == 1) pnltmp.pol |= HSVS_CONTROL; - dtbprop = FDTPROP(dtbaddr, PATHINF, "sync-edge"); + dtbprop = FDTPROP(PATHINF, "sync-edge"); if (dtbprop == 1) pnltmp.pol |= HSVS_RISEFALL; - dtbprop = FDTPROP(dtbaddr, PATHTIM, "pixelclk-active"); + dtbprop = FDTPROP(PATHTIM, "pixelclk-active"); if (dtbprop == 0) pnltmp.pol |= PXCLK_INVERT; - dtbprop = FDTPROP(dtbaddr, PATHTIM, "de-active"); + dtbprop = FDTPROP(PATHTIM, "de-active"); if (dtbprop == 0) pnltmp.pol |= DE_INVERT; #else @@ -163,11 +162,16 @@ static int load_devicetree(void) char *dtbname = getenv("dtb"); char *dtbdev = getenv("dtbdev"); char *dtppart = getenv("dtbpart"); - u32 dtbaddr = getenv_ulong("dtbaddr", 16, ~0UL); + u32 dtbaddr = getenv_ulong("dtbaddr", 16, 0UL); + int rc; loff_t dtbsize;

- if (!dtbdev || !dtbdev) { - puts("load_devicetree: <dtbdev>/<dtbpart> missing.\n"); + if (dtbaddr == 0) { + printf("%s: don't have a valid <dtbaddr> in env!\n", __func__); + return -1; + } + if (!dtbdev || !dtbdev || !dtbname) { + printf("%s: <dtbdev>/<dtbpart>/<dtb> missing.\n", __func__); return -1; }

@@ -175,18 +179,16 @@ static int load_devicetree(void) puts("load_devicetree: set_blk_dev failed.\n"); return -1; } - if (dtbname && dtbaddr != ~0UL) { - if (fs_read(dtbname, dtbaddr, 0, 0, &dtbsize) == 0) { - gd->fdt_blob = (void *)dtbaddr; - gd->fdt_size = dtbsize; - debug("loaded %d bytes of dtb onto 0x%08x\n", - (u32)dtbsize, dtbaddr); - return dtbsize; - } - puts("load_devicetree: load dtb failed,file does not exist!\n"); + rc = fs_read(dtbname, (u32)dtbaddr, 0, 0, &dtbsize); + if (rc == 0) { + gd->fdt_blob = (void *)dtbaddr; + gd->fdt_size = dtbsize; + debug("loaded %d bytes of dtb onto 0x%08x\n", + (u32)dtbsize, (u32)gd->fdt_blob); + return dtbsize; }

- puts("load_devicetree: <dtb>/<dtbaddr> missing!\n"); + printf("%s: load dtb failed!\n", __func__); return -1; }

@@ -196,26 +198,25 @@ static const char *dtbmacaddr(u32 ifno) char enet[16]; const char *mac; const char *path; - u32 dtbaddr = getenv_ulong("dtbaddr", 16, ~0UL);

- if (dtbaddr == ~0UL) { - puts("dtbmacaddr: failed to get 'dtbaddr' from env!\n"); + if (gd->fdt_blob == NULL) { + printf("%s: don't have a valid gd->fdt_blob!\n", __func__); return NULL; }

- node = fdt_path_offset((void *)dtbaddr, "/aliases"); + node = fdt_path_offset(gd->fdt_blob, "/aliases"); if (node < 0) return NULL;

sprintf(enet, "ethernet%d", ifno); - path = fdt_getprop((void *)dtbaddr, node, enet, NULL); + path = fdt_getprop(gd->fdt_blob, node, enet, NULL); if (!path) { printf("no alias for %s\n", enet); return NULL; }

- node = fdt_path_offset((void *)dtbaddr, path); - mac = fdt_getprop((void *)dtbaddr, node, "mac-address", &len); + node = fdt_path_offset(gd->fdt_blob, path); + mac = fdt_getprop(gd->fdt_blob, node, "mac-address", &len); if (mac && is_valid_ether_addr((u8 *)mac)) return mac;

@@ -226,15 +227,14 @@ static void br_summaryscreen_printdtb(char *prefix, char *name, char *suffix) { - u32 dtbaddr = getenv_ulong("dtbaddr", 16, ~0UL); char buf[32] = { 0 }; const char *nodep = buf; char *mac = 0; int nodeoffset; int len;

- if (dtbaddr == ~0UL) { - puts("br_summaryscreen: failed to get 'dtbaddr' from env!\n"); + if (gd->fdt_blob == NULL) { + printf("%s: don't have a valid gd->fdt_blob!\n", __func__); return; }

@@ -247,13 +247,13 @@ static void br_summaryscreen_printdtb(char *prefix, if (mac) sprintf(buf, "%pM", mac); } else { - nodeoffset = fdt_path_offset((void *)dtbaddr, + nodeoffset = fdt_path_offset(gd->fdt_blob, "/factory-settings"); if (nodeoffset < 0) { puts("no 'factory-settings' in dtb!\n"); return; } - nodep = fdt_getprop((void *)dtbaddr, nodeoffset, name, &len); + nodep = fdt_getprop(gd->fdt_blob, nodeoffset, name, &len); } if (nodep && strlen(nodep) > 1) lcd_printf("%s %s %s", prefix, nodep, suffix); @@ -318,13 +318,11 @@ void lcdpower(int on) { u32 pin, swval, i; #ifdef CONFIG_USE_FDT - u32 dtbaddr = getenv_ulong("dtbaddr", 16, ~0UL); - - if (dtbaddr == ~0UL) { - puts("lcdpower: failed to get 'dtbaddr' from env!\n"); + if (gd->fdt_blob == NULL) { + printf("%s: don't have a valid gd->fdt_blob!\n", __func__); return; } - pin = FDTPROP(dtbaddr, PATHINF, "pwrpin"); + pin = FDTPROP(PATHINF, "pwrpin"); #else pin = getenv_ulong("ds1_pwr", 16, ~0UL); #endif @@ -385,15 +383,13 @@ void lcd_ctrl_init(void *lcdbase) void lcd_enable(void) { #ifdef CONFIG_USE_FDT - u32 dtbaddr = getenv_ulong("dtbaddr", 16, ~0UL); - - if (dtbaddr == ~0UL) { - puts("lcdpower: failed to get 'dtbaddr' from env!\n"); + if (gd->fdt_blob == NULL) { + printf("%s: don't have a valid gd->fdt_blob!\n", __func__); return; } - unsigned int driver = FDTPROP(dtbaddr, PATHINF, "brightdrv"); - unsigned int bright = FDTPROP(dtbaddr, PATHINF, "brightdef"); - unsigned int pwmfrq = FDTPROP(dtbaddr, PATHINF, "brightfdim"); + unsigned int driver = FDTPROP(PATHINF, "brightdrv"); + unsigned int bright = FDTPROP(PATHINF, "brightdef"); + unsigned int pwmfrq = FDTPROP(PATHINF, "brightfdim"); #else unsigned int driver = getenv_ulong("ds1_bright_drv", 16, 0UL); unsigned int bright = getenv_ulong("ds1_bright_def", 10, 50);